configure: use c++98 for c++ files

Use c++98 standard instead of c++11. Signed-off-by: Rick Kern <kernrj@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit 729d82abae) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
changelog: fix entry order
2025-12-08 07:49:59 +01:00 · 2016-06-26 23:27:22 +02:00 · 2016-06-26 15:28:16 -03:00 · 2016-06-26 15:17:48 -03:00 · 2016-06-26 15:14:17 -03:00 · 2016-06-26 11:35:22 +02:00
5339 changed files with 237550 additions and 662912 deletions
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1 @@
 *.pnm -diff -text
 tests/ref/fate/sub-scc eol=crlf
--- a/.gitignore
+++ b/.gitignore
@@ -18,13 +18,6 @@
 *.so.*
 *.swp
 *.ver
 *.version
 *.metal.air
 *.metallib
 *.metallib.c
 *.ptx
 *.ptx.c
 *.ptx.gz
 *_g
 \#*
 .\#*
@@ -33,11 +26,10 @@
 /ffmpeg
 /ffplay
 /ffprobe
-/config.asm
+/ffserver
-/config.h
+/config.*
 /coverage.info
 /avversion.h
 /lcov/
 /src
 /mapfile
 /tools/python/__pycache__/
--- a/.mailmap
+++ b/.mailmap
@@ -1,25 +0,0 @@
 <james.darnley@gmail.com> <jdarnley@obe.tv>
 <jeebjp@gmail.com> <jan.ekstrom@aminocom.com>
 <sw@jkqxz.net> <mrt@jkqxz.net>
 <u@pkh.me> <cboesch@gopro.com>
 <zhilizhao@tencent.com> <quinkblack@foxmail.com>
 <zhilizhao@tencent.com> <wantlamy@gmail.com>
 <modmaker@google.com> <modmaker-at-google.com@ffmpeg.org>
 <stebbins@jetheaddev.com> <jstebbins@jetheaddev.com>
 <barryjzhao@tencent.com> <mypopydev@gmail.com>
 <barryjzhao@tencent.com> <jun.zhao@intel.com>
 <josh@itanimul.li> <joshdk@obe.tv>
 <michael@niedermayer.cc> <michaelni@gmx.at>
 <linjie.justin.fu@gmail.com> <linjie.fu@intel.com>
 <linjie.justin.fu@gmail.com> <fulinjie@zju.edu.cn>
 <ceffmpeg@gmail.com> <cehoyos@ag.or.at>
 <ceffmpeg@gmail.com> <cehoyos@rainbow.studorg.tuwien.ac.at>
 <ffmpeg@gyani.pro> <gyandoshi@gmail.com>
 <atomnuker@gmail.com> <rpehlivanov@obe.tv>
 <lizhong1008@gmail.com> <zhong.li@intel.com>
 <lizhong1008@gmail.com> <zhongli_dev@126.com>
 <andreas.rheinhardt@gmail.com> <andreas.rheinhardt@googlemail.com>
 rcombs <rcombs@rcombs.me> <rodger.combs@gmail.com>
 <thilo.borgmann@mail.de> <thilo.borgmann@googlemail.com>
 <liuqi05@kuaishou.com> <lq@chinaffmpeg.org>
 <ruiling.song83@gmail.com> <ruiling.song@intel.com>
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,22 +6,18 @@ os:
 addons:
  apt:
    packages:
-      - nasm
+      - yasm
      - diffutils
 compiler:
  - clang
  - gcc
 matrix:
    exclude:
        - os: osx
          compiler: gcc
 cache:
  directories:
    - ffmpeg-samples
 before_install:
-  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update; fi
+  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update --all; fi
 install:
-  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install nasm; fi
+  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install yasm; fi
 script:
  - mkdir -p ffmpeg-samples
  - ./configure --samples=ffmpeg-samples --cc=$CC
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,4 +0,0 @@
 # Note to Github users
 Patches should be submitted to the [ffmpeg-devel mailing list](https://ffmpeg.org/mailman/listinfo/ffmpeg-devel) using `git format-patch` or `git send-email`. Github pull requests should be avoided because they are not part of our review process and **will be ignored**.
 See [https://ffmpeg.org/developer.html#Contributing](https://ffmpeg.org/developer.html#Contributing) for more information.
--- a/651
+++ b/651
@@ -1,655 +1,7 @@
 Entries are sorted chronologically from oldest to youngest within each release,
 releases are sorted from youngest to oldest.
-version 5.0.2:
+version <next>:
 - swscale: aarch64: Fix yuv2rgb with negative strides
 - avcodec/atrac3plusdec: fix compilation failure after last commit
 - avcodec/atrac3plus: reorder channels to match the output layout
 - avcodec/aacdec: fix parsing streams with channel configuration 11
 - Changelog: update
 - avcodec/speexdec: Check channels > 2
 - avformat/vividas: Check packet size
 - avcodec/dstdec: Check for overflow in build_filter()
 - avformat/spdifdec: Use 64bit to compute bit rate
 - avformat/rpl: Use 64bit for duration computation
 - avformat/xwma: Use av_rescale() for duration computation
 - avformat/sdsdec: Use av_rescale() to avoid intermediate overflow in duration calculation
 - avformat/sbgdec: Check ts_int in genrate_intervals
 - avformat/sbgdec: clamp end_ts
 - avformat/rmdec: check tag_size
 - avformat/nutdec: Check fields
 - avformat/flvdec: Use 64bit for sum_flv_tag_size
 - avformat/jacosubdec: Fix overflow in get_shift()
 - avformat/dxa: avoid bpc overflows
 - avformat/dhav: Use 64bit seek_back
 - avformat/cafdec: Check that nb_frasmes fits within 64bit
 - avformat/asfdec_o: Limit packet offset
 - avformat/ape: Check frames size
 - avformat/icodec: Check nb_pal
 - avformat/aiffdec: Use 64bit for block_duration use
 - avformat/aiffdec: Check block_duration
 - avformat/mxfdec: only probe max run in
 - avformat/mxfdec: Check run_in is within 65536
 - avcodec/mjpegdec: Check for unsupported bayer case
 - avcodec/apedec: Fix integer overflow in filter_3800()
 - avcodec/tta: Check 24bit scaling for overflow
 - avcodec/mobiclip: Check quantizer for overflow
 - avcodec/exr: Check preview psize
 - avcodec/tiff: Fix loop detection
 - libavformat/hls: Free keys
 - avcodec/fmvc: Move frame allocation to a later stage
 - avfilter/vf_showinfo: remove backspaces
 - avcodec/speedhq: Check width
 - avcodec/bink: disallow odd positioned scaled blocks
 - libswscale: force a minimum size of the slide for bayer sources
 - lavc/videotoolbox: do not pass AVCodecContext to decoder output callback
 - lavc/pthread_frame: always transfer stashed hwaccel state
 - avformat/cafenc: derive Opus frame size from the relevant stream parameters
 - avcodec/arm/sbcenc: avoid callee preserved vfp registers
 - avfilter/vf_scale: overwrite the width and height expressions with the original values
 - lavc/pthread_frame: avoid leaving stale hwaccel state in worker threads
 - Update for 5.0.2
 - avformat/asfdec_o: limit recursion depth in asf_read_unknown()
 - doc/git-howto.texi: Document commit signing
 - libavcodec/8bps: Check that line lengths fit within the buffer
 - avcodec/midivid: Perform lzss_uncompress() before ff_reget_buffer()
 - libavformat/iff: Check for overflow in body_end calculation
 - avformat/avidec: Prevent entity expansion attacks
 - avcodec/h263dec: Sanity check against minimal I/P frame size
 - avcodec/hevcdec: Check s->ref in the md5 path similar to hwaccel
 - avcodec/mpegaudiodec_template: use unsigned shift in handle_crc()
 - avformat/subviewerdec: Make read_ts() more flexible
 - avcodec/mjpegdec: bayer and rct are incompatible
 - MAINTAINERS: Add ED25519 key for signing my commits in the future
 - avcodec/hevc_filter: copy_CTB() only within width&height
 - avcodec/tiff: Check tile_length and tile_width
 - avcodec/mss4: Check image size with av_image_check_size2()
 - avformat/flvdec: Check for EOF in index reading
 - avformat/nutdec: Check get_packetheader() in mainheader
 - avformat/asfdec_f: Use 64bit for packet start time
 - avcodec/exr: Check x/ysize
 - tools/target_dec_fuzzer: Adjust threshold for MMVIDEO
 - avcodec/lagarith: Check dst/src in zero run code
 - avcodec/h264dec: Skip late SEI
 - avcodec/sbrdsp_fixed: Fix integer overflows in sbr_qmf_deint_neg_c()
 - avfilter/vf_signature: Fix integer overflow in filter_frame()
 - avformat/rtsp: break on unknown protocols
 - avcodec/hevcdsp_template: stay within tables in sao_band_filter()
 - avcodec/tiff: Check pixel format types for dng
 - avcodec/qpeldsp: copy less for the mc0x cases
 - avformat/aaxdec: Check for empty segments
 - avcodec/ffv1dec: Limit golomb rice coded slices to width 8M
 - avformat/iff: simplify duration calculation
 - avcodec/wnv1: Check for width =1
 - avcodec/ffv1dec_template: fix indention
 - avformat/sctp: close socket on errors
 - avformat/cinedec: Check size and pos more
 - avcodec/aasc: Fix indention
 - avcodec/qdrw: adjust max colors to array size
 - avcodec/alacdsp: Make intermediates unsigned
 - avformat/aiffdec: cleanup size handling for extreem cases
 - avformat/matroskadec: avoid integer overflows in SAR computation
 - avcodec/jpeglsdec: fix end check for xfrm
 - avcodec/cdgraphics: limit scrolling to the line
 - avformat/hls: Limit start_seq_no to one bit less
 - avformat/aiffdec: avoid integer overflow in get_meta()
 - avformat/aaxdec: Check for overlaping segments
 - avformat/ape: more bits in size for less overflows
 - avformat/aviobuf: Check buf_size in ffio_ensure_seekback()
 - avformat/bfi: Check offsets better
 - avformat/asfdec_f: Check packet_frag_timestamp
 - avcodec/texturedspenc: Fix indexing in color distribution determination
 - avformat/act: Check ff_get_wav_header() for failure
 - avcodec/libxavs2: Improve r redundancy in occured
 - avformat/libzmq: Improve r redundancy in occured
 - avfilter/vf_libplacebo: Match AV_OPT_TYPE_FLOAT to dbl
 - avfilter/vsrc_mandelbrot: Check for malloc failure
 - avfilter/vf_frei0r: Copy to frame allocated according to frei0r requirements
 - avfilter/video: Add ff_default_get_video_buffer2() to set specific alignment
 - avformat/genh: Check sample rate
 - avformat/demux: Use unsigned to check duration vs duration_text
 - avutil/hwcontext_d3d11va: fix texture_infos writes on non-fixed-size pools
 - avcodec/cuviddec: fix null pointer dereference
 - avcodec/cuviddec: fix AV1 decoding error
 - configure: extend SDL check to accept all 2.x versions
 - lavf/tls_mbedtls: add support for mbedtls version 3
 - fate: update reference files after the recent dash manifest muxer changes
 - avformat/webmdashenc: fix on-demand profile string
 - avcodec/libdav1d: don't depend on the event flags API to init sequence params the first time
 version 5.0.1:
 - avcodec/exr: Avoid signed overflow in displayWindow
 - avcodec/diracdec: avoid signed integer overflow in global mv
 - avcodec/takdsp: Fix integer overflow in decorrelate_sf()
 - avcodec/apedec: fix a integer overflow in long_filter_high_3800()
 - avdevice/dshow: fix regression
 - avfilter/vf_subtitles: pass storage size to libass
 - avcodec/vp9_superframe_split_bsf: Don't read inexistent data
 - avcodec/vp9_superframe_split_bsf: Discard invalid zero-sized frames
 - avcodec/vp9_superframe_bsf: Check for existence of data before reading it
 - avcodec/vp9_raw_reorder_bsf: Check for existence of data before reading it
 - avformat/imf: fix packet pts, dts and muxing
 - avformat/imf: open resources only when first needed
 - avformat/imf: cosmetics
 - avformat/imf_cpl: do not use filesize when reading XML file
 - avformat/imfdec: Use proper logcontext
 - avformat/imfdec: do not use filesize when reading XML file
 - doc/utils: add missing 22.2 layout entry
 - avcodec/av1: only set the private context pix_fmt field if get_pixel_format() succeeds
 - avformat/aqtitledec: Skip unrepresentable durations
 - avformat/cafdec: Do not store empty keys in read_info_chunk()
 - avformat/mxfdec: Do not clear array in mxf_read_strong_ref_array() before writing
 - avformat/mxfdec: Check for avio_read() failure in mxf_read_strong_ref_array()
 - avformat/mxfdec: Check count in mxf_read_strong_ref_array()
 - avformat/hls: Check target_duration
 - avcodec/pixlet: Avoid signed integer overflow in scaling in filterfn()
 - avformat/matroskadec: Check pre_ns
 - avcodec/sonic: Use unsigned for predictor_k to avoid undefined behavior
 - avcodec/libuavs3d: Check ff_set_dimensions() for failure
 - avcodec/speexdec: Align some comments
 - avcodec/speexdec: Use correct doxygen comments
 - avcodec/mjpegbdec: Set buf_size
 - avformat/matroskadec: Use rounded down duration in get_cue_desc() check
 - avcodec/argo: Check packet size
 - avcodec/g729_parser: Check channels
 - avformat/avidec: Check height
 - avformat/rmdec: Better duplicate tags check
 - avformat/mov: Disallow empty sidx
 - avformat/argo_cvg:: Fix order of operations in error check in argo_cvg_write_trailer()
 - avformat/argo_asf: Fix order of operations in error check in argo_asf_write_trailer()
 - avcodec/movtextdec: add () to CMP() macro to avoid unexpected behavior
 - avformat/matroskadec: Check duration
 - avformat/mov: Corner case encryption error cleanup in mov_read_senc()
 - avcodec/jpeglsdec: Fix if( code style
 - avcodec/jpeglsdec: Check get_ur_golomb_jpegls() for error
 - avcodec/motion_est: fix indention of ff_get_best_fcode()
 - avcodec/motion_est: Fix xy indexing on range violation in ff_get_best_fcode()
 - avformat/hls: Use unsigned for iv computation
 - avcodec/jpeglsdec: Increase range for N in ls_get_code_runterm() by using unsigned
 - avformat/matroskadec: Check desc_bytes
 - avformat/utils: Fix invalid NULL pointer operation in ff_parse_key_value()
 - avformat/matroskadec: Fix infinite loop with bz decompression
 - avformat/utils: keep chapter monotonicity on chapter updates
 - avformat/mov: Check size before subtraction
 - avcodec/cfhd: Avoid signed integer overflow in coeff
 - avcodec/libdav1d: free the Dav1dData packet on dav1d_send_data() failure
 - avcodec/h264_parser: don't alter decoder private data
 - configure: link to libatomic when it's present
 - fate/ffmpeg: add missing samples dependency to fate-shortest
 version 5.0:
 - ADPCM IMA Westwood encoder
 - Westwood AUD muxer
 - ADPCM IMA Acorn Replay decoder
 - Argonaut Games CVG demuxer
 - Argonaut Games CVG muxer
 - Concatf protocol
 - afwtdn audio filter
 - audio and video segment filters
 - Apple Graphics (SMC) encoder
 - hsvkey and hsvhold video filters
 - adecorrelate audio filter
 - atilt audio filter
 - grayworld video filter
 - AV1 Low overhead bitstream format muxer
 - swscale slice threading
 - MSN Siren decoder
 - scharr video filter
 - apsyclip audio filter
 - morpho video filter
 - amr parser
 - (a)latency filters
 - GEM Raster image decoder
 - asdr audio filter
 - speex decoder
 - limitdiff video filter
 - xcorrelate video filter
 - varblur video filter
 - huesaturation video filter
 - colorspectrum source video filter
 - RTP packetizer for uncompressed video (RFC 4175)
 - bitpacked encoder
 - VideoToolbox VP9 hwaccel
 - VideoToolbox ProRes hwaccel
 - support loongarch.
 - aspectralstats audio filter
 - adynamicsmooth audio filter
 - libplacebo filter
 - vflip_vulkan, hflip_vulkan and flip_vulkan filters
 - adynamicequalizer audio filter
 - yadif_videotoolbox filter
 - VideoToolbox ProRes encoder
 - anlmf audio filter
 - IMF demuxer (experimental)
 version 4.4:
 - AudioToolbox output device
 - MacCaption demuxer
 - PGX decoder
 - chromanr video filter
 - VDPAU accelerated HEVC 10/12bit decoding
 - ADPCM IMA Ubisoft APM encoder
 - Rayman 2 APM muxer
 - AV1 encoding support SVT-AV1
 - Cineform HD encoder
 - ADPCM Argonaut Games encoder
 - Argonaut Games ASF muxer
 - AV1 Low overhead bitstream format demuxer
 - RPZA video encoder
 - ADPCM IMA MOFLEX decoder
 - MobiClip FastAudio decoder
 - MobiClip video decoder
 - MOFLEX demuxer
 - MODS demuxer
 - PhotoCD decoder
 - MCA demuxer
 - AV1 decoder (Hardware acceleration used only)
 - SVS demuxer
 - Argonaut Games BRP demuxer
 - DAT demuxer
 - aax demuxer
 - IPU decoder, parser and demuxer
 - Intel QSV-accelerated AV1 decoding
 - Argonaut Games Video decoder
 - libwavpack encoder removed
 - ACE demuxer
 - AVS3 demuxer
 - AVS3 video decoder via libuavs3d
 - Cintel RAW decoder
 - VDPAU accelerated VP9 10/12bit decoding
 - afreqshift and aphaseshift filters
 - High Voltage Software ADPCM encoder
 - LEGO Racers ALP (.tun & .pcm) muxer
 - AV1 VAAPI decoder
 - adenorm filter
 - ADPCM IMA AMV encoder
 - AMV muxer
 - NVDEC AV1 hwaccel
 - DXVA2/D3D11VA hardware accelerated AV1 decoding
 - speechnorm filter
 - SpeedHQ encoder
 - asupercut filter
 - asubcut filter
 - Microsoft Paint (MSP) version 2 decoder
 - Microsoft Paint (MSP) demuxer
 - AV1 monochrome encoding support via libaom >= 2.0.1
 - asuperpass and asuperstop filter
 - shufflepixels filter
 - tmidequalizer filter
 - estdif filter
 - epx filter
 - Dolby E parser
 - shear filter
 - kirsch filter
 - colortemperature filter
 - colorcontrast filter
 - PFM encoder
 - colorcorrect filter
 - binka demuxer
 - XBM parser
 - xbm_pipe demuxer
 - colorize filter
 - CRI parser
 - aexciter audio filter
 - exposure video filter
 - monochrome video filter
 - setts bitstream filter
 - vif video filter
 - OpenEXR image encoder
 - Simbiosis IMX decoder
 - Simbiosis IMX demuxer
 - Digital Pictures SGA demuxer and decoders
 - TTML subtitle encoder and muxer
 - identity video filter
 - msad video filter
 - gophers protocol
 - RIST protocol via librist
 version 4.3:
 - v360 filter
 - Intel QSV-accelerated MJPEG decoding
 - Intel QSV-accelerated VP9 decoding
 - Support for TrueHD in mp4
 - Support AMD AMF encoder on Linux (via Vulkan)
 - IMM5 video decoder
 - ZeroMQ protocol
 - support Sipro ACELP.KELVIN decoding
 - streamhash muxer
 - sierpinski video source
 - scroll video filter
 - photosensitivity filter
 - anlms filter
 - arnndn filter
 - bilateral filter
 - maskedmin and maskedmax filters
 - VDPAU VP9 hwaccel
 - median filter
 - QSV-accelerated VP9 encoding
 - AV1 encoding support via librav1e
 - AV1 frame merge bitstream filter
 - AV1 Annex B demuxer
 - axcorrelate filter
 - mvdv decoder
 - mvha decoder
 - MPEG-H 3D Audio support in mp4
 - thistogram filter
 - freezeframes filter
 - Argonaut Games ADPCM decoder
 - Argonaut Games ASF demuxer
 - xfade video filter
 - xfade_opencl filter
 - afirsrc audio filter source
 - pad_opencl filter
 - Simon & Schuster Interactive ADPCM decoder
 - Real War KVAG demuxer
 - CDToons video decoder
 - siren audio decoder
 - Rayman 2 ADPCM decoder
 - Rayman 2 APM demuxer
 - cas video filter
 - High Voltage Software ADPCM decoder
 - LEGO Racers ALP (.tun & .pcm) demuxer
 - AMQP 0-9-1 protocol (RabbitMQ)
 - Vulkan support
 - avgblur_vulkan, overlay_vulkan, scale_vulkan and chromaber_vulkan filters
 - ADPCM IMA MTF decoder
 - FWSE demuxer
 - DERF DPCM decoder
 - DERF demuxer
 - CRI HCA decoder
 - CRI HCA demuxer
 - overlay_cuda filter
 - switch from AvxSynth to AviSynth+ on Linux
 - mv30 decoder
 - Expanded styling support for 3GPP Timed Text Subtitles (movtext)
 - WebP parser
 - tmedian filter
 - maskedthreshold filter
 - Support for muxing pcm and pgs in m2ts
 - Cunning Developments ADPCM decoder
 - asubboost filter
 - Pro Pinball Series Soundbank demuxer
 - pcm_rechunk bitstream filter
 - scdet filter
 - NotchLC decoder
 - gradients source video filter
 - MediaFoundation encoder wrapper
 - untile filter
 - Simon & Schuster Interactive ADPCM encoder
 - PFM decoder
 - dblur video filter
 - Real War KVAG muxer
 version 4.2:
 - tpad filter
 - AV1 decoding support through libdav1d
 - dedot filter
 - chromashift and rgbashift filters
 - freezedetect filter
 - truehd_core bitstream filter
 - dhav demuxer
 - PCM-DVD encoder
 - GIF parser
 - vividas demuxer
 - hymt decoder
 - anlmdn filter
 - maskfun filter
 - hcom demuxer and decoder
 - ARBC decoder
 - libaribb24 based ARIB STD-B24 caption support (profiles A and C)
 - Support decoding of HEVC 4:4:4 content in nvdec and cuviddec
 - removed libndi-newtek
 - agm decoder
 - KUX demuxer
 - AV1 frame split bitstream filter
 - lscr decoder
 - lagfun filter
 - asoftclip filter
 - Support decoding of HEVC 4:4:4 content in vdpau
 - colorhold filter
 - xmedian filter
 - asr filter
 - showspatial multimedia filter
 - VP4 video decoder
 - IFV demuxer
 - derain filter
 - deesser filter
 - mov muxer writes tracks with unspecified language instead of English by default
 - add support for using clang to compile CUDA kernels
 version 4.1:
 - deblock filter
 - tmix filter
 - amplify filter
 - fftdnoiz filter
 - aderivative and aintegral audio filters
 - pal75bars and pal100bars video filter sources
 - support mbedTLS based TLS
 - adeclick filter
 - adeclip filter
 - libtensorflow backend for DNN based filters like srcnn
 - vc1 decoder is now bit-exact
 - ATRAC9 decoder
 - lensfun wrapper filter
 - colorconstancy filter
 - AVS2 video decoder via libdavs2
 - IMM4 video decoder
 - Brooktree ProSumer video decoder
 - MatchWare Screen Capture Codec decoder
 - WinCam Motion Video decoder
 - 1D LUT filter (lut1d)
 - RemotelyAnywhere Screen Capture decoder
 - cue and acue filters
 - support for AV1 in MP4
 - transpose_npp filter
 - AVS2 video encoder via libxavs2
 - amultiply filter
 - Block-Matching 3d (bm3d) denoising filter
 - acrossover filter
 - ilbc decoder
 - audio denoiser as afftdn filter
 - AV1 parser
 - SER demuxer
 - sinc audio filter source
 - chromahold filter
 - setparams filter
 - vibrance filter
 - decoding S12M timecode in h264
 - xstack filter
 - pcm vidc decoder and encoder
 - (a)graphmonitor filter
 - yadif_cuda filter
 version 4.0:
 - Bitstream filters for editing metadata in H.264, HEVC and MPEG-2 streams
 - Dropped support for OpenJPEG versions 2.0 and below. Using OpenJPEG now
  requires 2.1 (or later) and pkg-config.
 - VDA dropped (use VideoToolbox instead)
 - MagicYUV encoder
 - Raw AMR-NB and AMR-WB demuxers
 - TiVo ty/ty+ demuxer
 - Intel QSV-accelerated MJPEG encoding
 - PCE support for extended channel layouts in the AAC encoder
 - native aptX and aptX HD encoder and decoder
 - Raw aptX and aptX HD muxer and demuxer
 - NVIDIA NVDEC-accelerated H.264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding
 - Intel QSV-accelerated overlay filter
 - mcompand audio filter
 - acontrast audio filter
 - OpenCL overlay filter
 - video mix filter
 - video normalize filter
 - audio lv2 wrapper filter
 - VAAPI MJPEG and VP8 decoding
 - AMD AMF H.264 and HEVC encoders
 - video fillborders filter
 - video setrange filter
 - nsp demuxer
 - support LibreSSL (via libtls)
 - AVX-512/ZMM support added
 - Dropped support for building for Windows XP. The minimum supported Windows
  version is Windows Vista.
 - deconvolve video filter
 - entropy video filter
 - hilbert audio filter source
 - aiir audio filter
 - aiff: add support for CD-ROM XA ADPCM
 - Removed the ffserver program
 - Removed the ffmenc and ffmdec muxer and demuxer
 - VideoToolbox HEVC encoder and hwaccel
 - VAAPI-accelerated ProcAmp (color balance), denoise and sharpness filters
 - Add android_camera indev
 - codec2 en/decoding via libcodec2
 - muxer/demuxer for raw codec2 files and .c2 files
 - Moved nvidia codec headers into an external repository.
  They can be found at http://git.videolan.org/?p=ffmpeg/nv-codec-headers.git
 - native SBC encoder and decoder
 - drmeter audio filter
 - hapqa_extract bitstream filter
 - filter_units bitstream filter
 - AV1 Support through libaom
 - E-AC-3 dependent frames support
 - bitstream filter for extracting E-AC-3 core
 - Haivision SRT protocol via libsrt
 - segafilm muxer
 - vfrdet filter
 - SRCNN filter
 version 3.4:
 - deflicker video filter
 - doubleweave video filter
 - lumakey video filter
 - pixscope video filter
 - oscilloscope video filter
 - config.log and other configuration files moved into ffbuild/ directory
 - update cuvid/nvenc headers to Video Codec SDK 8.0.14
 - afir audio filter
 - scale_cuda CUDA based video scale filter
 - librsvg support for svg rasterization
 - crossfeed audio filter
 - spec compliant VP9 muxing support in MP4
 - remove the libnut muxer/demuxer wrappers
 - remove the libschroedinger encoder/decoder wrappers
 - surround audio filter
 - sofalizer filter switched to libmysofa
 - Gremlin Digital Video demuxer and decoder
 - headphone audio filter
 - superequalizer audio filter
 - roberts video filter
 - The x86 assembler default switched from yasm to nasm, pass
  --x86asmexe=yasm to configure to restore the old behavior.
 - additional frame format support for Interplay MVE movies
 - support for decoding through D3D11VA in ffmpeg
 - limiter video filter
 - libvmaf video filter
 - Dolby E decoder and SMPTE 337M demuxer
 - unpremultiply video filter
 - tlut2 video filter
 - floodfill video filter
 - pseudocolor video filter
 - raw G.726 muxer and demuxer, left- and right-justified
 - NewTek NDI input/output device
 - Some video filters with several inputs now use a common set of options:
  blend, libvmaf, lut3d, overlay, psnr, ssim.
  They must always be used by name.
 - FITS demuxer and decoder
 - FITS muxer and encoder
 - add --disable-autodetect build switch
 - drop deprecated qtkit input device (use avfoundation instead)
 - despill video filter
 - haas audio filter
 - SUP/PGS subtitle muxer
 - convolve video filter
 - VP9 tile threading support
 - KMS screen grabber
 - CUDA thumbnail filter
 - V4L2 mem2mem HW assisted codecs
 - Rockchip MPP hardware decoding
 - vmafmotion video filter
 - use MIME type "G726" for little-endian G.726, "AAL2-G726" for big-endian G.726
 version 3.3:
 - CrystalHD decoder moved to new decode API
 - add internal ebur128 library, remove external libebur128 dependency
 - Pro-MPEG CoP #3-R2 FEC protocol
 - premultiply video filter
 - Support for spherical videos
 - configure now fails if autodetect-libraries are requested but not found
 - PSD Decoder
 - 16.8 floating point pcm decoder
 - 24.0 floating point pcm decoder
 - Apple Pixlet decoder
 - QDMC audio decoder
 - NewTek SpeedHQ decoder
 - MIDI Sample Dump Standard demuxer
 - readeia608 filter
 - Sample Dump eXchange demuxer
 - abitscope multimedia filter
 - Scenarist Closed Captions demuxer and muxer
 - threshold filter
 - midequalizer filter
 - Optimal Huffman tables for (M)JPEG encoding
 - VAAPI-accelerated MPEG-2 and VP8 encoding
 - FM Screen Capture Codec decoder
 - native Opus encoder
 - ScreenPressor decoder
 - incomplete ClearVideo decoder
 - Intel QSV video scaling and deinterlacing filters
 - Support MOV with multiple sample description tables
 - XPM decoder
 - Removed the legacy X11 screen grabber, use XCB instead
 - MPEG-7 Video Signature filter
 - Removed asyncts filter (use af_aresample instead)
 - Intel QSV-accelerated VP8 video decoding
 - VAAPI-accelerated deinterlacing
 version 3.2:
 - libopenmpt demuxer
 - tee protocol
 - Changed metadata print option to accept general urls
 - Alias muxer for Ogg Video (.ogv)
 - VP8 in Ogg muxing
 - curves filter doesn't automatically insert points at x=0 and x=1 anymore
 - 16-bit support in curves filter and selectivecolor filter
 - OpenH264 decoder wrapper
 - MediaCodec H.264/HEVC/MPEG-4/VP8/VP9 hwaccel
 - True Audio (TTA) muxer
 - crystalizer audio filter
 - acrusher audio filter
 - bitplanenoise video filter
 - floating point support in als decoder
 - fifo muxer
 - maskedclamp filter
 - hysteresis filter
 - lut2 filter
 - yuvtestsrc filter
 - CUDA CUVID H.263/VP8/VP9/10 bit HEVC (Dithered) Decoding
 - vaguedenoiser filter
 - added threads option per filter instance
 - weave filter
 - gblur filter
 - avgblur filter
 - sobel and prewitt filter
 - MediaCodec HEVC/MPEG-4/VP8/VP9 decoding
 - Meridian Lossless Packing (MLP) / TrueHD encoder
 - Non-Local Means (nlmeans) denoising filter
 - sdl2 output device and ffplay support
 - sdl1 output device and sdl1 support removed
 - extended mov edit list support
 - libfaac encoder removed
 - Matroska muxer now writes CRC32 elements by default in all Level 1 elements
 - sidedata video and asidedata audio filter
 - Changed mapping of rtp MIME type G726 to codec g726le.
 - spec compliant VAAPI/DXVA2 VC-1 decoding of slices in frame-coded images
 version 3.1:
@@ -696,7 +48,6 @@ version 3.1:
 - 10-bit depth support in native utvideo decoder
 - libutvideo wrapper removed
 - YUY2 Lossless Codec decoder
 - VideoToolbox H.264 encoder
 version 3.0:
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -1,4 +1,4 @@
-## Installing FFmpeg
+#Installing FFmpeg:
 1. Type `./configure` to create the configuration. A list of configure
 options is printed by running `configure --help`.
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -17,15 +17,16 @@ Specifically, the GPL parts of FFmpeg are:
    - `libavcodec/x86/flac_dsp_gpl.asm`
    - `libavcodec/x86/idct_mmx.c`
    - `libavfilter/x86/vf_removegrain.asm`
 - the X11 grabber in `libavdevice/x11grab.c`
 - the following building and testing tools
    - `compat/solaris/make_sunver.pl`
    - `doc/t2h.pm`
    - `doc/texi2pod.pl`
-    - `libswresample/tests/swresample.c`
+    - `libswresample/swresample-test.c`
    - `tests/checkasm/*`
    - `tests/tiny_ssim.c`
 - the following filters in libavfilter:
-    - `signature_lookup.c`
+    - `f_ebur128.c`
    - `vf_blackframe.c`
    - `vf_boxblur.c`
    - `vf_colormatrix.c`
@@ -35,13 +36,13 @@ Specifically, the GPL parts of FFmpeg are:
    - `vf_eq.c`
    - `vf_find_rect.c`
    - `vf_fspp.c`
    - `vf_geq.c`
    - `vf_histeq.c`
    - `vf_hqdn3d.c`
    - `vf_interlace.c`
    - `vf_kerndeint.c`
    - `vf_lensfun.c` (GPL version 3 or later)
    - `vf_mcdeint.c`
    - `vf_mpdecimate.c`
    - `vf_nnedi.c`
    - `vf_owdenoise.c`
    - `vf_perspective.c`
    - `vf_phase.c`
@@ -50,14 +51,12 @@ Specifically, the GPL parts of FFmpeg are:
    - `vf_pullup.c`
    - `vf_repeatfields.c`
    - `vf_sab.c`
    - `vf_signature.c`
    - `vf_smartblur.c`
    - `vf_spp.c`
    - `vf_stereo3d.c`
    - `vf_super2xsai.c`
    - `vf_tinterlace.c`
    - `vf_uspp.c`
    - `vf_vaguedenoiser.c`
    - `vsrc_mptestsrc.c`
 Should you, for whatever reason, prefer to use version 3 of the (L)GPL, then
@@ -83,47 +82,43 @@ affect the licensing of binaries resulting from the combination.
 ### Compatible libraries
-The following libraries are under GPL version 2:
+The following libraries are under GPL:
 - avisynth
 - frei0r
 - libcdio
 - libdavs2
 - librubberband
 - libvidstab
 - libx264
 - libx265
 - libxavs
 - libxavs2
 - libxvid
 When combining them with FFmpeg, FFmpeg needs to be licensed as GPL as well by
 passing `--enable-gpl` to configure.
-The following libraries are under LGPL version 3:
+The OpenCORE and VisualOn libraries are under the Apache License 2.0. That
- gmp
+license is incompatible with the LGPL v2.1 and the GPL v2, but not with
 - libaribb24
 - liblensfun
 When combining them with FFmpeg, use the configure option `--enable-version3` to
 upgrade FFmpeg to the LGPL v3.
 The VMAF, mbedTLS, RK MPI, OpenCORE and VisualOn libraries are under the Apache License
 2.0. That license is incompatible with the LGPL v2.1 and the GPL v2, but not with
 version 3 of those licenses. So to combine these libraries with FFmpeg, the
 license version needs to be upgraded by passing `--enable-version3` to configure.
 The smbclient library is under the GPL v3, to combine it with FFmpeg,
 the options `--enable-gpl` and `--enable-version3` have to be passed to
 configure to upgrade FFmpeg to the GPL v3.
 ### Incompatible libraries
 There are certain libraries you can combine with FFmpeg whose licenses are not
 compatible with the GPL and/or the LGPL. If you wish to enable these
 libraries, even in circumstances that their license may be incompatible, pass
-`--enable-nonfree` to configure. This will cause the resulting binary to be
+`--enable-nonfree` to configure. But note that if you enable any of these
 libraries the resulting binary will be under a complex license mix that is
 more restrictive than the LGPL and that may result in additional obligations.
 It is possible that these restrictions cause the resulting binary to be
 unredistributable.
 The Fraunhofer FDK AAC and OpenSSL libraries are under licenses which are
 incompatible with the GPLv2 and v3. To the best of our knowledge, they are
 compatible with the LGPL.
 The FAAC library is incompatible with all versions of GPL and LGPL.
 The NVENC library, while its header file is licensed under the compatible MIT
 license, requires a proprietary binary blob at run time, and is deemed to be
 incompatible with the GPL. We are not certain if it is compatible with the
 LGPL, but we require `--enable-nonfree` even with LGPL configurations in case
 it is not.
--- a/173
+++ b/173
@@ -29,6 +29,9 @@ ffplay:
 ffprobe:
  ffprobe.c                             Stefano Sabatini
 ffserver:
  ffserver.c                            Reynaldo H. Verdejo Pinochet
 Commandline utility code:
  cmdutils.c, cmdutils.h                Michael Niedermayer
@@ -39,12 +42,11 @@ QuickTime faststart:
 Miscellaneous Areas
 ===================
-documentation                           Stefano Sabatini, Mike Melanson, Timothy Gu, Gyan Doshi
+documentation                           Stefano Sabatini, Mike Melanson, Timothy Gu, Lou Logan
-project server                          Árpád Gereöffy, Michael Niedermayer, Reimar Doeffinger, Alexander Strasser, Nikolay Aleksandrov
+project server                          Árpád Gereöffy, Michael Niedermayer, Reimar Doeffinger, Alexander Strasser
 presets                                 Robert Swain
 metadata subsystem                      Aurelien Jacobs
 release management                      Michael Niedermayer
 API tests                               Ludmila Glinskih
 Communication
@@ -52,12 +54,11 @@ Communication
 website                                 Deby Barbara Lepage
 fate.ffmpeg.org                         Timothy Gu
-Trac bug tracker                        Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos
+Trac bug tracker                        Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos, Lou Logan
-Patchwork                               Andriy Gelman
+mailing lists                           Baptiste Coudurier, Lou Logan
-mailing lists                           Baptiste Coudurier
+Google+                                 Paul B Mahol, Michael Niedermayer, Alexander Strasser
-Twitter                                 Reynaldo H. Verdejo Pinochet
+Twitter                                 Lou Logan, Reynaldo H. Verdejo Pinochet
 Launchpad                               Timothy Gu
 ffmpeg-security                         Andreas Cadhalpun, Carl Eugen Hoyos, Clément Bœsch, Michael Niedermayer, Reimar Doeffinger, rcombs, wm4
 libavutil
@@ -77,8 +78,6 @@ Other:
  eval.c, eval.h                        Michael Niedermayer
  float_dsp                             Loren Merritt
  hash                                  Reimar Doeffinger
  hwcontext_cuda*                       Timo Rothenpieler
  hwcontext_vulkan*                     Lynne
  intfloat*                             Michael Niedermayer
  integer.c, integer.h                  Michael Niedermayer
  lzo                                   Reimar Doeffinger
@@ -89,7 +88,6 @@ Other:
  rational.c, rational.h                Michael Niedermayer
  rc4                                   Reimar Doeffinger
  ripemd.c, ripemd.h                    James Almer
  tx*                                   Lynne
 libavcodec
@@ -115,14 +113,13 @@ Generic Parts:
    lzw.*                               Michael Niedermayer
  floating point AAN DCT:
    faandct.c, faandct.h                Michael Niedermayer
  Non-power-of-two MDCT:
    mdct15.c, mdct15.h                  Rostislav Pehlivanov
  Golomb coding:
    golomb.c, golomb.h                  Michael Niedermayer
  motion estimation:
    motion*                             Michael Niedermayer
  rate control:
    ratecontrol.c                       Michael Niedermayer
    libxvid_rc.c                        Michael Niedermayer
  simple IDCT:
    simple_idct.c, simple_idct.h        Michael Niedermayer
  postprocessing:
@@ -138,15 +135,11 @@ Codecs:
  8bps.c                                Roberto Togni
  8svx.c                                Jaikrishnan Menon
  aacenc*, aaccoder.c                   Rostislav Pehlivanov
  adpcm.c                               Zane van Iperen
  alacenc.c                             Jaikrishnan Menon
-  alsdec.c                              Thilo Borgmann, Umair Khan
+  alsdec.c                              Thilo Borgmann
  aptx.c                                Aurelien Jacobs
  ass*                                  Aurelien Jacobs
  asv*                                  Michael Niedermayer
  atrac3plus*                           Maxim Poliakovski
  audiotoolbox*                         rcombs
  avs2*                                 Huiwen Ren
  bgmc.c, bgmc.h                        Thilo Borgmann
  binkaudio.c                           Peter Ross
  cavs*                                 Stefan Gehrer
@@ -154,16 +147,14 @@ Codecs:
  celp_filters.*                        Vitor Sessak
  cinepak.c                             Roberto Togni
  cinepakenc.c                          Rl / Aetey G.T. AB
-  ccaption_dec.c                        Anshul Maheshwari, Aman Gupta
+  ccaption_dec.c                        Anshul Maheshwari
  cljr                                  Alex Beregszaszi
  cpia.c                                Stephan Hilb
  crystalhd.c                           Philip Langdale
  cscd.c                                Reimar Doeffinger
-  cuviddec.c                            Timo Rothenpieler
+  cuvid.c                               Timo Rothenpieler
  dca*                                  foo86
  dirac*                                Rostislav Pehlivanov
  dnxhd*                                Baptiste Coudurier
  dolby_e*                              foo86
  dpcm.c                                Mike Melanson
  dss_sp.c                              Oleksij Rempel
  dv.c                                  Roman Shaposhnik
@@ -173,7 +164,6 @@ Codecs:
  exif.c, exif.h                        Thilo Borgmann
  ffv1*                                 Michael Niedermayer
  ffwavesynth.c                         Nicolas George
  fifo.c                                Jan Sebechlebsky
  flicvideo.c                           Mike Melanson
  g722.c                                Martin Storsjo
  g726.c                                Roman Shaposhnik
@@ -182,7 +172,7 @@ Codecs:
  h263*                                 Michael Niedermayer
  h264*                                 Loren Merritt, Michael Niedermayer
  hap*                                  Tom Butterworth
-  huffyuv*                              Michael Niedermayer
+  huffyuv*                              Michael Niedermayer, Christophe Gisquet
  idcinvideo.c                          Mike Melanson
  interplayvideo.c                      Mike Melanson
  jni*, ffjni*                          Matthieu Bouron
@@ -190,25 +180,22 @@ Codecs:
  jvdec.c                               Peter Ross
  lcl*.c                                Roberto Togni, Reimar Doeffinger
  libcelt_dec.c                         Nicolas George
  libcodec2.c                           Tomas Härdin
  libdirac*                             David Conrad
  libdavs2.c                            Huiwen Ren
  libgsm.c                              Michel Bardiaux
  libkvazaar.c                          Arttu Ylä-Outinen
  libopenh264enc.c                      Martin Storsjo, Linjie Fu
  libopenjpeg.c                         Jaikrishnan Menon
  libopenjpegenc.c                      Michael Bradshaw
  libschroedinger*                      David Conrad
  libtheoraenc.c                        David Conrad
  libvorbis.c                           David Conrad
  libvpx*                               James Zern
  libxavs.c                             Stefan Gehrer
  libxavs2.c                            Huiwen Ren
  libzvbi-teletextdec.c                 Marton Balint
  lzo.h, lzo.c                          Reimar Doeffinger
  mdec.c                                Michael Niedermayer
  mimic.c                               Ramiro Polla
  mjpeg*.c                              Michael Niedermayer
-  mlp*                                  Ramiro Polla, Jai Luthra
+  mlp*                                  Ramiro Polla
  mmvideo.c                             Peter Ross
  mpeg12.c, mpeg12data.h                Michael Niedermayer
  mpegvideo.c, mpegvideo.h              Michael Niedermayer
@@ -217,16 +204,14 @@ Codecs:
  msrle.c                               Mike Melanson
  msvideo1.c                            Mike Melanson
  nuv.c                                 Reimar Doeffinger
-  nvdec*, nvenc*                        Timo Rothenpieler
+  nvenc*                                Timo Rothenpieler
  omx.c                                 Martin Storsjo, Aman Gupta
  opus*                                 Rostislav Pehlivanov
  paf.*                                 Paul B Mahol
  pcx.c                                 Ivo van Poorten
  pgssubdec.c                           Reimar Doeffinger
  ptx.c                                 Ivo van Poorten
  qcelp*                                Reynaldo H. Verdejo Pinochet
  qdm2.c, qdm2data.h                    Roberto Togni
-  qsv*                                  Mark Thompson, Zhong Li, Haihao Xiang
+  qsv*                                  Ivan Uskov
  qtrle.c                               Mike Melanson
  ra144.c, ra144.h, ra288.c, ra288.h    Roberto Togni
  resample2.c                           Michael Niedermayer
@@ -234,11 +219,12 @@ Codecs:
  rpza.c                                Roberto Togni
  rtjpeg.c, rtjpeg.h                    Reimar Doeffinger
  rv10.c                                Michael Niedermayer
  rv4*                                  Christophe Gisquet
  s3tc*                                 Ivo van Poorten
  smc.c                                 Mike Melanson
  smvjpegdec.c                          Ash Hughes
  snow*                                 Michael Niedermayer, Loren Merritt
  sonic.c                               Alex Beregszaszi
  speedhq.c                             Steinar H. Gunderson
  srt*                                  Aurelien Jacobs
  sunrast.c                             Ivo van Poorten
  svq3.c                                Michael Niedermayer
@@ -247,10 +233,11 @@ Codecs:
  tta.c                                 Alex Beregszaszi, Jaikrishnan Menon
  ttaenc.c                              Paul B Mahol
  txd.c                                 Ivo van Poorten
-  v4l2_*                                Jorge Ramirez-Ortiz
+  vc1*                                  Christophe Gisquet
  vc2*                                  Rostislav Pehlivanov
  vcr1.c                                Michael Niedermayer
-  videotoolboxenc.c                     Rick Kern, Aman Gupta
+  vda_h264_dec.c                        Xidorn Quan
  videotoolboxenc.c                     Rick Kern
  vima.c                                Paul B Mahol
  vorbisdec.c                           Denes Balatoni, David Conrad
  vorbisenc.c                           Oded Shimon
@@ -271,13 +258,12 @@ Codecs:
 Hardware acceleration:
  crystalhd.c                           Philip Langdale
-  dxva2*                                Hendrik Leppkes, Laurent Aimar, Steve Lhomme
+  dxva2*                                Hendrik Leppkes, Laurent Aimar
-  d3d11va*                              Steve Lhomme
+  mediacodec*                           Matthieu Bouron
-  mediacodec*                           Matthieu Bouron, Aman Gupta
+  vaapi*                                Gwenole Beauchesne
-  vaapi*                                Haihao Xiang
+  vaapi_encode*                         Mark Thompson
  vaapi_encode*                         Mark Thompson, Haihao Xiang
  vdpau*                                Philip Langdale, Carl Eugen Hoyos
-  videotoolbox*                         Rick Kern, Aman Gupta
+  videotoolbox*                         Rick Kern
 libavdevice
@@ -287,8 +273,7 @@ libavdevice
  avfoundation.m                        Thilo Borgmann
-  android_camera.c                      Felix Matouschek
+  decklink*                             Deti Fliegl
  decklink*                             Marton Balint
  dshow.c                               Roger Pack (CC rogerdpack@gmail.com)
  fbdev_enc.c                           Lukasz Marek
  gdigrab.c                             Roger Pack (CC rogerdpack@gmail.com)
@@ -297,8 +282,8 @@ libavdevice
  libdc1394.c                           Roman Shaposhnik
  opengl_enc.c                          Lukasz Marek
  pulse_audio_enc.c                     Lukasz Marek
  qtkit.m                               Thilo Borgmann
  sdl                                   Stefano Sabatini
  sdl2.c                                Josh de Kock
  v4l2.c                                Giorgio Vazzana
  vfwcap.c                              Ramiro Polla
  xv.c                                  Lukasz Marek
@@ -309,8 +294,6 @@ libavfilter
 Generic parts:
  graphdump.c                           Nicolas George
  motion_estimation.c                   Davinder Singh
 Filters:
  f_drawgraph.c                         Paul B Mahol
  af_adelay.c                           Paul B Mahol
@@ -325,7 +308,6 @@ Filters:
  af_chorus.c                           Paul B Mahol
  af_compand.c                          Paul B Mahol
  af_firequalizer.c                     Muhammad Faiz
  af_hdcd.c                             Burt P.
  af_ladspa.c                           Paul B Mahol
  af_loudnorm.c                         Kyle Swanson
  af_pan.c                              Nicolas George
@@ -335,10 +317,8 @@ Filters:
  avf_avectorscope.c                    Paul B Mahol
  avf_showcqt.c                         Muhammad Faiz
  vf_blend.c                            Paul B Mahol
  vf_bwdif                              Thomas Mundt (CC <thomas.mundt@hr.de>)
  vf_chromakey.c                        Timo Rothenpieler
  vf_colorchannelmixer.c                Paul B Mahol
  vf_colorconstancy.c                   Mina Sami    (CC <minas.gorgy@gmail.com>)
  vf_colorbalance.c                     Paul B Mahol
  vf_colorkey.c                         Timo Rothenpieler
  vf_colorlevels.c                      Paul B Mahol
@@ -352,11 +332,8 @@ Filters:
  vf_hqx.c                              Clément Bœsch
  vf_idet.c                             Pascal Massimino
  vf_il.c                               Paul B Mahol
  vf_(t)interlace                       Thomas Mundt (CC <thomas.mundt@hr.de>)
  vf_lenscorrection.c                   Daniel Oberhoff
  vf_mergeplanes.c                      Paul B Mahol
  vf_mestimate.c                        Davinder Singh
  vf_minterpolate.c                     Davinder Singh
  vf_neighbor.c                         Paul B Mahol
  vf_psnr.c                             Paul B Mahol
  vf_random.c                           Paul B Mahol
@@ -366,15 +343,12 @@ Filters:
  vf_ssim.c                             Paul B Mahol
  vf_stereo3d.c                         Paul B Mahol
  vf_telecine.c                         Paul B Mahol
  vf_tonemap_opencl.c                   Ruiling Song
  vf_yadif.c                            Michael Niedermayer
  vf_zoompan.c                          Paul B Mahol
 Sources:
  vsrc_mandelbrot.c                     Michael Niedermayer
 dnn                                     Yejun Guo
 libavformat
 ===========
@@ -393,42 +367,31 @@ Muxers/Demuxers:
  afc.c                                 Paul B Mahol
  aiffdec.c                             Baptiste Coudurier, Matthieu Bouron
  aiffenc.c                             Baptiste Coudurier, Matthieu Bouron
  alp.c                                 Zane van Iperen
  amvenc.c                              Zane van Iperen
  apm.c                                 Zane van Iperen
  apngdec.c                             Benoit Fouet
  argo_asf.c                            Zane van Iperen
  argo_brp.c                            Zane van Iperen
  argo_cvg.c                            Zane van Iperen
  ass*                                  Aurelien Jacobs
  astdec.c                              Paul B Mahol
  astenc.c                              James Almer
  avi*                                  Michael Niedermayer
-  avisynth.c                            Stephen Hutchinson
+  avisynth.c                            AvxSynth Team (avxsynth.testing at gmail dot com)
  avr.c                                 Paul B Mahol
  bink.c                                Peter Ross
  boadec.c                              Michael Niedermayer
  brstm.c                               Paul B Mahol
  caf*                                  Peter Ross
  cdxl.c                                Paul B Mahol
  codec2.c                              Tomas Härdin
  crc.c                                 Michael Niedermayer
  dashdec.c                             Steven Liu
  dashenc.c                             Karthick Jeyapal
  daud.c                                Reimar Doeffinger
  dss.c                                 Oleksij Rempel
  dtsdec.c                              foo86
  dtshddec.c                            Paul B Mahol
  dv.c                                  Roman Shaposhnik
  electronicarts.c                      Peter Ross
  epafdec.c                             Paul B Mahol
  ffm*                                  Baptiste Coudurier
  flic.c                                Mike Melanson
-  flvdec.c                              Michael Niedermayer
+  flvdec.c, flvenc.c                    Michael Niedermayer
  flvenc.c                              Michael Niedermayer, Steven Liu
  gxf.c                                 Reimar Doeffinger
  gxfenc.c                              Baptiste Coudurier
-  hlsenc.c                              Christian Suloway, Steven Liu
+  hls.c                                 Anssi Hannula
  hls encryption (hlsenc.c)             Christian Suloway
  idcin.c                               Mike Melanson
  idroqdec.c                            Mike Melanson
  iff.c                                 Jaikrishnan Menon
@@ -437,15 +400,14 @@ Muxers/Demuxers:
  ircam*                                Paul B Mahol
  iss.c                                 Stefan Gehrer
  jvdec.c                               Peter Ross
  kvag.c                                Zane van Iperen
  libmodplug.c                          Clément Bœsch
-  libopenmpt.c                          Josh de Kock
+  libnut.c                              Oded Shimon
  lmlm4.c                               Ivo van Poorten
  lvfdec.c                              Paul B Mahol
  lxfdec.c                              Tomas Härdin
-  matroska.c                            Aurelien Jacobs, Andreas Rheinhardt
+  matroska.c                            Aurelien Jacobs
-  matroskadec.c                         Aurelien Jacobs, Andreas Rheinhardt
+  matroskadec.c                         Aurelien Jacobs
-  matroskaenc.c                         David Conrad, Andreas Rheinhardt
+  matroskaenc.c                         David Conrad
  matroska subtitles (matroskaenc.c)    John Peebles
  metadata*                             Aurelien Jacobs
  mgsts.c                               Paul B Mahol
@@ -460,7 +422,8 @@ Muxers/Demuxers:
  mpegtsenc.c                           Baptiste Coudurier
  msnwc_tcp.c                           Ramiro Polla
  mtv.c                                 Reynaldo H. Verdejo Pinochet
-  mxf*                                  Baptiste Coudurier, Tomas Härdin
+  mxf*                                  Baptiste Coudurier
  mxfdec.c                              Tomas Härdin
  nistspheredec.c                       Paul B Mahol
  nsvdec.c                              Francois Revol
  nut*                                  Michael Niedermayer
@@ -468,9 +431,9 @@ Muxers/Demuxers:
  oggdec.c, oggdec.h                    David Conrad
  oggenc.c                              Baptiste Coudurier
  oggparse*.c                           David Conrad
  oggparsedaala*                        Rostislav Pehlivanov
  oma.c                                 Maxim Poliakovski
  paf.c                                 Paul B Mahol
  pp_bnk.c                              Zane van Iperen
  psxstr.c                              Mike Melanson
  pva.c                                 Ivo van Poorten
  pvfdec.c                              Paul B Mahol
@@ -489,7 +452,6 @@ Muxers/Demuxers:
  rtpdec_vc2hq.*, rtpenc_vc2hq.*        Thomas Volkert
  rtpdec_vp9.c                          Thomas Volkert
  rtpenc_mpv.*, rtpenc_aac.*            Martin Storsjo
  s337m.c                               foo86
  sbgdec.c                              Nicolas George
  sdp.c                                 Martin Storsjo
  segafilm.c                            Mike Melanson
@@ -516,7 +478,6 @@ Protocols:
  ftp.c                                 Lukasz Marek
  http.c                                Ronald S. Bultje
  libssh.c                              Lukasz Marek
  libzmq.c                              Andriy Gelman
  mms*.c                                Ronald S. Bultje
  udp.c                                 Luca Abeni
  icecast.c                             Marvin Scholz
@@ -540,10 +501,9 @@ Operating systems / CPU architectures
 =====================================
 Alpha                                   Falk Hueffner
-MIPS                                    Manojkumar Bhosale, Shiyou Yin
+MIPS                                    Nedeljko Babic
 Mac OS X / PowerPC                      Romain Dolbeau, Guillaume Poirier
 Amiga / PowerPC                         Colin Ward
 Linux / PowerPC                         Lauri Kasanen
 Windows MinGW                           Alex Beregszaszi, Ramiro Polla
 Windows Cygwin                          Victor Paesa
 Windows MSVC                            Matthew Oliver, Hendrik Leppkes
@@ -553,35 +513,6 @@ Sparc                                   Roman Shaposhnik
 OS/2                                    KO Myung-Hun
 Developers with git write access who are currently not maintaining any specific part
 ====================================================================================
 Alex Converse
 Andreas Cadhalpun
 Anuradha Suraparaju
 Ben Littler
 Benjamin Larsson
 Bobby Bingham
 Daniel Verkamp
 Derek Buitenhuis
 Ganesh Ajjanagadde
 Henrik Gramner
 Ivan Uskov
 James Darnley
 Jan Ekström
 Joakim Plate
 Jun Zhao
 Kieran Kunhya
 Kirill Gavrilov
 Limin Wang
 Martin Storsjö
 Panagiotis Issaris
 Pedro Arthur
 Sebastien Zwickert
 Vittorio Giovara
 wm4
 (this list is incomplete)
 Releases
 ========
@@ -589,15 +520,13 @@ Releases
 2.7                                     Michael Niedermayer
 2.6                                     Michael Niedermayer
 2.5                                     Michael Niedermayer
 2.4                                     Michael Niedermayer
 If you want to maintain an older release, please contact us
-GnuPG Fingerprints and IRC nicknames of maintainers and contributors
+GnuPG Fingerprints of maintainers and contributors
-====================================================================
+==================================================
 IRC nicknames are in parentheses. These apply
 to the IRC channels listed on the website.
 Alexander Strasser            1C96 78B7 83CB 8AA7 9AF5 D1EB A7D8 A57B A876 E58F
 Anssi Hannula                 1A92 FF42 2DD9 8D2E 8AF7 65A9 4278 C520 513D F3CB
@@ -611,31 +540,23 @@ Daniel Verkamp                78A6 07ED 782C 653E C628 B8B9 F0EB 8DD8 2F0E 21C7
 FFmpeg release signing key    FCF9 86EA 15E6 E293 A564 4F10 B432 2F04 D676 58D8
 Ganesh Ajjanagadde            C96A 848E 97C3 CEA2 AB72 5CE4 45F9 6A2D 3C36 FB1B
 Gwenole Beauchesne            2E63 B3A6 3E44 37E2 017D 2704 53C7 6266 B153 99C4
 Haihao Xiang (haihao)         1F0C 31E8 B4FE F7A4 4DC1 DC99 E0F5 76D4 76FC 437F
 Jaikrishnan Menon             61A1 F09F 01C9 2D45 78E1 C862 25DC 8831 AF70 D368
 James Almer                   7751 2E8C FD94 A169 57E6 9A7A 1463 01AD 7376 59E0
 Jean Delvare                  7CA6 9F44 60F1 BDC4 1FD2 C858 A552 6B9B B3CD 4E6A
 Loren Merritt                 ABD9 08F4 C920 3F65 D8BE 35D7 1540 DAA7 060F 56DE
-Lynne                         FE50 139C 6805 72CA FD52 1F8D A2FE A5F0 3F03 4464
+Lou Logan                     7D68 DC73 CBEF EABB 671A B6CF 621C 2E28 82F8 DC3A
 Michael Niedermayer           9FF2 128B 147E F673 0BAD F133 611E C787 040B 0FAB
                              DD1E C9E8 DE08 5C62 9B3E 1846 B18E 8928 B394 8D64
 Nicolas George                24CE 01CE 9ACC 5CEB 74D8 8D9D B063 D997 36E5 4C93
 Nikolay Aleksandrov           8978 1D8C FB71 588E 4B27 EAA8 C4F0 B5FC E011 13B1
 Panagiotis Issaris            6571 13A3 33D9 3726 F728 AA98 F643 B12E ECF3 E029
 Peter Ross                    A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B
 Philip Langdale               5DC5 8D66 5FBA 3A43 18EC 045E F8D6 B194 6A75 682E
 Ramiro Polla                  7859 C65B 751B 1179 792E DAE8 8E95 8B2F 9B6C 5700
 Reimar Doeffinger             C61D 16E5 9E2C D10C 8958 38A4 0899 A2B9 06D4 D9C7
 Reinhard Tartler              9300 5DC2 7E87 6C37 ED7B CA9A 9808 3544 9453 48A4
 Reynaldo H. Verdejo Pinochet  6E27 CD34 170C C78E 4D4F 5F40 C18E 077F 3114 452A
 Robert Swain                  EE7A 56EA 4A81 A7B5 2001 A521 67FA 362D A2FC 3E71
 Sascha Sommer                 38A0 F88B 868E 9D3A 97D4 D6A0 E823 706F 1E07 0D3C
 Stefano Sabatini              0D0B AD6B 5330 BBAD D3D6 6A0C 719C 2839 FC43 2D5F
 Steinar H. Gunderson          C2E9 004F F028 C18E 4EAD DB83 7F61 7561 7797 8F76
 Stephan Hilb                  4F38 0B3A 5F39 B99B F505 E562 8D5C 5554 4E17 8863
 Thilo Borgmann (thilo)        CE1D B7F4 4D20 FC3A DD9F FE5A 257C 5B8F 1D20 B92F
 Tiancheng "Timothy" Gu        9456 AFC0 814A 8139 E994 8351 7FE6 B095 B582 B0D4
 Tim Nicholson                 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83
-Tomas Härdin (thardin)        A79D 4E3D F38F 763F 91F5 8B33 A01E 8AE0 41BB 2551
+Tomas Härdin                  A79D 4E3D F38F 763F 91F5 8B33 A01E 8AE0 41BB 2551
 Wei Gao                       4269 7741 857A 0E60 9EC5 08D2 4744 4EFA 62C1 87B9
 Zane van Iperen (zane)        61AE D40F 368B 6F26 9DAE 3892 6861 6B2D 8AC4 DCC5
--- a/168
+++ b/168
@@ -1,5 +1,5 @@
 MAIN_MAKEFILE=1
-include ffbuild/config.mak
+include config.mak
 vpath %.c    $(SRC_PATH)
 vpath %.cpp  $(SRC_PATH)
@@ -11,19 +11,47 @@ vpath %.asm  $(SRC_PATH)
 vpath %.rc   $(SRC_PATH)
 vpath %.v    $(SRC_PATH)
 vpath %.texi $(SRC_PATH)
 vpath %.cu   $(SRC_PATH)
 vpath %.ptx  $(SRC_PATH)
 vpath %.metal $(SRC_PATH)
 vpath %/fate_config.sh.template $(SRC_PATH)
 AVPROGS-$(CONFIG_FFMPEG)   += ffmpeg
 AVPROGS-$(CONFIG_FFPLAY)   += ffplay
 AVPROGS-$(CONFIG_FFPROBE)  += ffprobe
 AVPROGS-$(CONFIG_FFSERVER) += ffserver
 AVPROGS    := $(AVPROGS-yes:%=%$(PROGSSUF)$(EXESUF))
 INSTPROGS   = $(AVPROGS-yes:%=%$(PROGSSUF)$(EXESUF))
 PROGS      += $(AVPROGS)
 AVBASENAMES  = ffmpeg ffplay ffprobe ffserver
 ALLAVPROGS   = $(AVBASENAMES:%=%$(PROGSSUF)$(EXESUF))
 ALLAVPROGS_G = $(AVBASENAMES:%=%$(PROGSSUF)_g$(EXESUF))
 $(foreach prog,$(AVBASENAMES),$(eval OBJS-$(prog) += cmdutils.o))
 $(foreach prog,$(AVBASENAMES),$(eval OBJS-$(prog)-$(CONFIG_OPENCL) += cmdutils_opencl.o))
 OBJS-ffmpeg                   += ffmpeg_opt.o ffmpeg_filter.o
 OBJS-ffmpeg-$(CONFIG_VIDEOTOOLBOX) += ffmpeg_videotoolbox.o
 OBJS-ffmpeg-$(CONFIG_LIBMFX)  += ffmpeg_qsv.o
 OBJS-ffmpeg-$(CONFIG_VAAPI)   += ffmpeg_vaapi.o
 ifndef CONFIG_VIDEOTOOLBOX
 OBJS-ffmpeg-$(CONFIG_VDA)     += ffmpeg_videotoolbox.o
 endif
 OBJS-ffmpeg-$(CONFIG_CUVID)   += ffmpeg_cuvid.o
 OBJS-ffmpeg-$(HAVE_DXVA2_LIB) += ffmpeg_dxva2.o
 OBJS-ffmpeg-$(HAVE_VDPAU_X11) += ffmpeg_vdpau.o
 OBJS-ffserver                 += ffserver_config.o
 TESTTOOLS   = audiogen videogen rotozoom tiny_psnr tiny_ssim base64 audiomatch
 HOSTPROGS  := $(TESTTOOLS:%=tests/%) doc/print_options
 TOOLS       = qt-faststart trasher uncoded_frame
 TOOLS-$(CONFIG_ZLIB) += cws2fws
 # $(FFLIBS-yes) needs to be in linking order
 FFLIBS-$(CONFIG_AVDEVICE)   += avdevice
 FFLIBS-$(CONFIG_AVFILTER)   += avfilter
 FFLIBS-$(CONFIG_AVFORMAT)   += avformat
 FFLIBS-$(CONFIG_AVCODEC)    += avcodec
 FFLIBS-$(CONFIG_AVRESAMPLE) += avresample
 FFLIBS-$(CONFIG_POSTPROC)   += postproc
 FFLIBS-$(CONFIG_SWRESAMPLE) += swresample
 FFLIBS-$(CONFIG_SWSCALE)    += swscale
@@ -31,67 +59,38 @@ FFLIBS-$(CONFIG_SWSCALE)    += swscale
 FFLIBS := avutil
 DATA_FILES := $(wildcard $(SRC_PATH)/presets/*.ffpreset) $(SRC_PATH)/doc/ffprobe.xsd
 EXAMPLES_FILES := $(wildcard $(SRC_PATH)/doc/examples/*.c) $(SRC_PATH)/doc/examples/Makefile $(SRC_PATH)/doc/examples/README
-SKIPHEADERS = compat/w32pthreads.h
+SKIPHEADERS = cmdutils_common_opts.h                                    \
              compat/w32pthreads.h
-# first so "all" becomes default target
+include $(SRC_PATH)/common.mak
 all: all-yes
 include $(SRC_PATH)/tools/Makefile
 include $(SRC_PATH)/ffbuild/common.mak
 FF_EXTRALIBS := $(FFEXTRALIBS)
 FF_DEP_LIBS  := $(DEP_LIBS)
 FF_STATIC_DEP_LIBS := $(STATIC_DEP_LIBS)
-$(TOOLS): %$(EXESUF): %.o
+all: $(AVPROGS)
 	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(EXTRALIBS-$(*F)) $(EXTRALIBS) $(ELIBS)
-target_dec_%_fuzzer$(EXESUF): target_dec_%_fuzzer.o $(FF_DEP_LIBS)
+$(TOOLS): %$(EXESUF): %.o $(EXEOBJS)
-	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
+	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS)
-tools/target_bsf_%_fuzzer$(EXESUF): tools/target_bsf_%_fuzzer.o $(FF_DEP_LIBS)
+tools/cws2fws$(EXESUF): ELIBS = $(ZLIB)
 	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
 target_dem_%_fuzzer$(EXESUF): target_dem_%_fuzzer.o $(FF_DEP_LIBS)
 	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
 tools/target_dem_fuzzer$(EXESUF): tools/target_dem_fuzzer.o $(FF_DEP_LIBS)
 	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
 tools/target_io_dem_fuzzer$(EXESUF): tools/target_io_dem_fuzzer.o $(FF_DEP_LIBS)
 	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $^ $(ELIBS) $(FF_EXTRALIBS) $(LIBFUZZER_PATH)
 tools/enum_options$(EXESUF): ELIBS = $(FF_EXTRALIBS)
 tools/enum_options$(EXESUF): $(FF_DEP_LIBS)
 tools/scale_slice_test$(EXESUF): $(FF_DEP_LIBS)
 tools/scale_slice_test$(EXESUF): ELIBS = $(FF_EXTRALIBS)
 tools/sofa2wavs$(EXESUF): ELIBS = $(FF_EXTRALIBS)
 tools/uncoded_frame$(EXESUF): $(FF_DEP_LIBS)
 tools/uncoded_frame$(EXESUF): ELIBS = $(FF_EXTRALIBS)
 tools/target_dec_%_fuzzer$(EXESUF): $(FF_DEP_LIBS)
 tools/target_dem_%_fuzzer$(EXESUF): $(FF_DEP_LIBS)
-CONFIGURABLE_COMPONENTS =                                           \
+config.h: .config
-    $(wildcard $(FFLIBS:%=$(SRC_PATH)/lib%/all*.c))                 \
+.config: $(wildcard $(FFLIBS:%=$(SRC_PATH)/lib%/all*.c))
    $(SRC_PATH)/libavcodec/bitstream_filters.c                      \
    $(SRC_PATH)/libavcodec/parsers.c                                \
    $(SRC_PATH)/libavformat/protocols.c                             \
 config.h: ffbuild/.config
 ffbuild/.config: $(CONFIGURABLE_COMPONENTS)
 	@-tput bold 2>/dev/null
-	@-printf '\nWARNING: $(?) newer than config.h, rerun configure\n\n'
+	@-printf '\nWARNING: $(?F) newer than config.h, rerun configure\n\n'
 	@-tput sgr0 2>/dev/null
-SUBDIR_VARS := CLEANFILES FFLIBS HOSTPROGS TESTPROGS TOOLS               \
+SUBDIR_VARS := CLEANFILES EXAMPLES FFLIBS HOSTPROGS TESTPROGS TOOLS      \
               HEADERS ARCH_HEADERS BUILT_HEADERS SKIPHEADERS            \
               ARMV5TE-OBJS ARMV6-OBJS ARMV8-OBJS VFP-OBJS NEON-OBJS     \
-               ALTIVEC-OBJS VSX-OBJS MMX-OBJS X86ASM-OBJS                \
+               ALTIVEC-OBJS MMX-OBJS YASM-OBJS                           \
               MIPSFPU-OBJS MIPSDSPR2-OBJS MIPSDSP-OBJS MSA-OBJS         \
-               MMI-OBJS LSX-OBJS LASX-OBJS OBJS SLIBOBJS SHLIBOBJS       \
+               MMI-OBJS OBJS SLIBOBJS HOSTOBJS TESTOBJS
               STLIBOBJS HOSTOBJS TESTOBJS
 define RESET
 $(1) :=
@@ -104,32 +103,41 @@ SUBDIR := $(1)/
 include $(SRC_PATH)/$(1)/Makefile
 -include $(SRC_PATH)/$(1)/$(ARCH)/Makefile
 -include $(SRC_PATH)/$(1)/$(INTRINSICS)/Makefile
-include $(SRC_PATH)/ffbuild/library.mak
+include $(SRC_PATH)/library.mak
 endef
 $(foreach D,$(FFLIBS),$(eval $(call DOSUBDIR,lib$(D))))
 include $(SRC_PATH)/fftools/Makefile
 include $(SRC_PATH)/doc/Makefile
 include $(SRC_PATH)/doc/examples/Makefile
-libavcodec/avcodec.o libavformat/utils.o libavdevice/avdevice.o libavfilter/avfilter.o libavutil/utils.o libpostproc/postprocess.o libswresample/swresample.o libswscale/utils.o : libavutil/ffversion.h
+define DOPROG
 OBJS-$(1) += $(1).o $(EXEOBJS) $(OBJS-$(1)-yes)
 $(1)$(PROGSSUF)_g$(EXESUF): $$(OBJS-$(1))
 $$(OBJS-$(1)): CFLAGS  += $(CFLAGS-$(1))
 $(1)$(PROGSSUF)_g$(EXESUF): LDFLAGS += $(LDFLAGS-$(1))
 $(1)$(PROGSSUF)_g$(EXESUF): FF_EXTRALIBS += $(LIBS-$(1))
 -include $$(OBJS-$(1):.o=.d)
 endef
 $(foreach P,$(PROGS),$(eval $(call DOPROG,$(P:$(PROGSSUF)$(EXESUF)=))))
 ffprobe.o cmdutils.o libavcodec/utils.o libavformat/utils.o libavdevice/avdevice.o libavfilter/avfilter.o libavutil/utils.o libpostproc/postprocess.o libswresample/swresample.o libswscale/utils.o : libavutil/ffversion.h
 $(PROGS): %$(PROGSSUF)$(EXESUF): %$(PROGSSUF)_g$(EXESUF)
 ifeq ($(STRIPTYPE),direct)
 	$(STRIP) -o $@ $<
 else
 	$(CP) $< $@
 	$(STRIP) $@
 endif
-%$(PROGSSUF)_g$(EXESUF): $(FF_DEP_LIBS)
+%$(PROGSSUF)_g$(EXESUF): %.o $(FF_DEP_LIBS)
 	$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $(OBJS-$*) $(FF_EXTRALIBS)
-VERSION_SH  = $(SRC_PATH)/ffbuild/version.sh
+OBJDIRS += tools
 -include $(wildcard tools/*.d)
 VERSION_SH  = $(SRC_PATH)/version.sh
 GIT_LOG     = $(SRC_PATH)/.git/logs/HEAD
-.version: $(wildcard $(GIT_LOG)) $(VERSION_SH) ffbuild/config.mak
+.version: $(wildcard $(GIT_LOG)) $(VERSION_SH) config.mak
 .version: M=@
 libavutil/ffversion.h .version:
@@ -139,33 +147,44 @@ libavutil/ffversion.h .version:
 # force version.sh to run whenever version might have changed
 -include .version
 ifdef AVPROGS
 install: install-progs install-data
 endif
 install: install-libs install-headers
 install-libs: install-libs-yes
-install-data: $(DATA_FILES)
+install-progs-yes:
-	$(Q)mkdir -p "$(DATADIR)"
+install-progs-$(CONFIG_SHARED): install-libs
 	$(INSTALL) -m 644 $(DATA_FILES) "$(DATADIR)"
-uninstall: uninstall-data uninstall-headers uninstall-libs uninstall-pkgconfig
+install-progs: install-progs-yes $(AVPROGS)
 	$(Q)mkdir -p "$(BINDIR)"
 	$(INSTALL) -c -m 755 $(INSTPROGS) "$(BINDIR)"
 install-data: $(DATA_FILES) $(EXAMPLES_FILES)
 	$(Q)mkdir -p "$(DATADIR)/examples"
 	$(INSTALL) -m 644 $(DATA_FILES) "$(DATADIR)"
 	$(INSTALL) -m 644 $(EXAMPLES_FILES) "$(DATADIR)/examples"
 uninstall: uninstall-libs uninstall-headers uninstall-progs uninstall-data
 uninstall-progs:
 	$(RM) $(addprefix "$(BINDIR)/", $(ALLAVPROGS))
 uninstall-data:
 	$(RM) -r "$(DATADIR)"
 clean::
 	$(RM) $(ALLAVPROGS) $(ALLAVPROGS_G)
 	$(RM) $(CLEANSUFFIXES)
-	$(RM) $(addprefix compat/,$(CLEANSUFFIXES)) $(addprefix compat/*/,$(CLEANSUFFIXES)) $(addprefix compat/*/*/,$(CLEANSUFFIXES))
+	$(RM) $(CLEANSUFFIXES:%=tools/%)
 	$(RM) -r coverage-html
 	$(RM) -rf coverage.info coverage.info.in lcov
-distclean:: clean
+distclean::
-	$(RM) .version avversion.h config.asm config.h mapfile  \
+	$(RM) $(DISTCLEANSUFFIXES)
-		ffbuild/.config ffbuild/config.* libavutil/avconfig.h \
+	$(RM) config.* .config libavutil/avconfig.h .version mapfile avversion.h version.h libavutil/ffversion.h libavcodec/codec_names.h libavcodec/bsf_list.c libavformat/protocol_list.c
 		version.h libavutil/ffversion.h libavcodec/codec_names.h \
 		libavcodec/bsf_list.c libavformat/protocol_list.c \
 		libavcodec/codec_list.c libavcodec/parser_list.c \
 		libavfilter/filter_list.c libavdevice/indev_list.c libavdevice/outdev_list.c \
 		libavformat/muxer_list.c libavformat/demuxer_list.c
 ifeq ($(SRC_LINK),src)
 	$(RM) src
 endif
@@ -174,12 +193,11 @@ endif
 config:
 	$(SRC_PATH)/configure $(value FFMPEG_CONFIGURATION)
 build: all alltools examples testprogs
 check: all alltools examples testprogs fate
 include $(SRC_PATH)/tests/Makefile
-$(sort $(OUTDIRS)):
+$(sort $(OBJDIRS)):
 	$(Q)mkdir -p $@
 # Dummy rule to stop make trying to rebuild removed or renamed headers
@@ -190,5 +208,5 @@ $(sort $(OUTDIRS)):
 # so this saves some time on slow systems.
 .SUFFIXES:
-.PHONY: all all-yes alltools build check config testprogs
+.PHONY: all all-yes alltools check *clean config install*
-.PHONY: *clean install* uninstall*
+.PHONY: testprogs uninstall*
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ such as audio, video, subtitles and related metadata.
 * `libavcodec` provides implementation of a wider range of codecs.
 * `libavformat` implements streaming protocols, container formats and basic I/O access.
 * `libavutil` includes hashers, decompressors and miscellaneous utility functions.
-* `libavfilter` provides means to alter decoded audio and video through a directed graph of connected filters.
+* `libavfilter` provides a mean to alter decoded Audio and Video through chain of filters.
 * `libavdevice` provides an abstraction to access capture and playback devices.
 * `libswresample` implements audio mixing and resampling routines.
 * `libswscale` implements color conversion and scaling routines.
@@ -21,6 +21,8 @@ such as audio, video, subtitles and related metadata.
 * [ffplay](https://ffmpeg.org/ffplay.html) is a minimalistic multimedia player.
 * [ffprobe](https://ffmpeg.org/ffprobe.html) is a simple analysis tool to inspect
  multimedia content.
 * [ffserver](https://ffmpeg.org/ffserver.html) is a multimedia streaming server
  for live broadcasts.
 * Additional small tools such as `aviocat`, `ismindex` and `qt-faststart`.
 ## Documentation
@@ -43,4 +45,5 @@ GPL. Please refer to the LICENSE file for detailed information.
 Patches should be submitted to the ffmpeg-devel mailing list using
 `git format-patch` or `git send-email`. Github pull requests should be
-avoided because they are not part of our review process and will be ignored.
+avoided because they are not part of our review process. Few developers
 follow pull requests so they will likely be ignored.
--- a/2
+++ b/2
@@ -1 +1 @@
-5.0.2
+3.1
--- a/10
+++ b/10
@@ -1,15 +1,15 @@
              ┌────────────────────────────────────────┐
-              │ RELEASE NOTES for FFmpeg 5.0 "Lorentz" │
+              │ RELEASE NOTES for FFmpeg 3.1 "Laplace" │
              └────────────────────────────────────────┘
-   The FFmpeg Project proudly presents FFmpeg 5.0 "Lorentz", about 9
+   The FFmpeg Project proudly presents FFmpeg 3.1 "Laplace", about 4
-   months after the release of FFmpeg 4.4.
+   months after the release of FFmpeg 3.0.
   A complete Changelog is available at the root of the project, and the
-   complete Git history on https://git.ffmpeg.org/gitweb/ffmpeg.git
+   complete Git history on http://source.ffmpeg.org.
   We hope you will like this release as much as we enjoyed working on it, and
   as usual, if you have any questions about it, or any FFmpeg related topic,
-   feel free to join us on the #ffmpeg IRC channel (on irc.libera.chat) or ask
+   feel free to join us on the #ffmpeg IRC channel (on irc.freenode.net) or ask
   on the mailing-lists.
--- a/ffbuild/arch.mak
+++ b/ffbuild/arch.mak
@@ -8,12 +8,10 @@ OBJS-$(HAVE_MIPSFPU)   += $(MIPSFPU-OBJS)    $(MIPSFPU-OBJS-yes)
 OBJS-$(HAVE_MIPSDSP)   += $(MIPSDSP-OBJS)    $(MIPSDSP-OBJS-yes)
 OBJS-$(HAVE_MIPSDSPR2) += $(MIPSDSPR2-OBJS)  $(MIPSDSPR2-OBJS-yes)
 OBJS-$(HAVE_MSA)       += $(MSA-OBJS)        $(MSA-OBJS-yes)
-OBJS-$(HAVE_MMI)       += $(MMI-OBJS)        $(MMI-OBJS-yes)
+OBJS-$(HAVE_MMI)   += $(MMI-OBJS)   $(MMI-OBJS-yes)
 OBJS-$(HAVE_LSX)       += $(LSX-OBJS)        $(LSX-OBJS-yes)
 OBJS-$(HAVE_LASX)      += $(LASX-OBJS)       $(LASX-OBJS-yes)
 OBJS-$(HAVE_ALTIVEC) += $(ALTIVEC-OBJS) $(ALTIVEC-OBJS-yes)
 OBJS-$(HAVE_VSX)     += $(VSX-OBJS) $(VSX-OBJS-yes)
 OBJS-$(HAVE_MMX)     += $(MMX-OBJS)     $(MMX-OBJS-yes)
-OBJS-$(HAVE_X86ASM)  += $(X86ASM-OBJS)  $(X86ASM-OBJS-yes)
+OBJS-$(HAVE_YASM)    += $(YASM-OBJS)    $(YASM-OBJS-yes)
--- a/fftools/cmdutils.c
+++ b/fftools/cmdutils.c
--- a/fftools/cmdutils.h
+++ b/fftools/cmdutils.h
@@ -19,8 +19,8 @@
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
-#ifndef FFTOOLS_CMDUTILS_H
+#ifndef CMDUTILS_H
-#define FFTOOLS_CMDUTILS_H
+#define CMDUTILS_H
 #include <stdint.h>
@@ -48,7 +48,7 @@ extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
 extern AVFormatContext *avformat_opts;
 extern AVDictionary *sws_dict;
 extern AVDictionary *swr_opts;
-extern AVDictionary *format_opts, *codec_opts;
+extern AVDictionary *format_opts, *codec_opts, *resample_opts;
 extern int hide_banner;
 /**
@@ -61,11 +61,6 @@ void register_exit(void (*cb)(int ret));
 */
 void exit_program(int ret) av_noreturn;
 /**
 * Initialize dynamic library loading
 */
 void init_dynload(void);
 /**
 * Initialize the cmdutils option system, in particular
 * allocate the *_opts contexts.
@@ -88,11 +83,6 @@ void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
 */
 int opt_cpuflags(void *optctx, const char *opt, const char *arg);
 /**
 * Override the cpucount.
 */
 int opt_cpucount(void *optctx, const char *opt, const char *arg);
 /**
 * Fallback for options that are not explicitly handled, these will be
 * parsed through AVOptions.
@@ -104,12 +94,18 @@ int opt_default(void *optctx, const char *opt, const char *arg);
 */
 int opt_loglevel(void *optctx, const char *opt, const char *arg);
-int opt_report(void *optctx, const char *opt, const char *arg);
+int opt_report(const char *opt);
 int opt_max_alloc(void *optctx, const char *opt, const char *arg);
 int opt_codec_debug(void *optctx, const char *opt, const char *arg);
 #if CONFIG_OPENCL
 int opt_opencl(void *optctx, const char *opt, const char *arg);
 int opt_opencl_bench(void *optctx, const char *opt, const char *arg);
 #endif
 /**
 * Limit the execution time.
 */
@@ -154,7 +150,6 @@ typedef struct SpecifierOpt {
        uint8_t *str;
        int        i;
        int64_t  i64;
        uint64_t ui64;
        float      f;
        double   dbl;
    } u;
@@ -206,49 +201,6 @@ typedef struct OptionDef {
 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
                       int rej_flags, int alt_flags);
 #if CONFIG_AVDEVICE
 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                \
    { "sources"    , OPT_EXIT | HAS_ARG, { .func_arg = show_sources },                                                  \
      "list sources of the input device", "device" },                                                                   \
    { "sinks"      , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks },                                                    \
      "list sinks of the output device", "device" },                                                                    \
 #else
 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE
 #endif
 #define CMDUTILS_COMMON_OPTIONS                                                                                         \
    { "L",           OPT_EXIT,             { .func_arg = show_license },     "show license" },                          \
    { "h",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
    { "?",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
    { "help",        OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
    { "-help",       OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
    { "version",     OPT_EXIT,             { .func_arg = show_version },     "show version" },                          \
    { "buildconf",   OPT_EXIT,             { .func_arg = show_buildconf },   "show build configuration" },              \
    { "formats",     OPT_EXIT,             { .func_arg = show_formats },     "show available formats" },                \
    { "muxers",      OPT_EXIT,             { .func_arg = show_muxers },      "show available muxers" },                 \
    { "demuxers",    OPT_EXIT,             { .func_arg = show_demuxers },    "show available demuxers" },               \
    { "devices",     OPT_EXIT,             { .func_arg = show_devices },     "show available devices" },                \
    { "codecs",      OPT_EXIT,             { .func_arg = show_codecs },      "show available codecs" },                 \
    { "decoders",    OPT_EXIT,             { .func_arg = show_decoders },    "show available decoders" },               \
    { "encoders",    OPT_EXIT,             { .func_arg = show_encoders },    "show available encoders" },               \
    { "bsfs",        OPT_EXIT,             { .func_arg = show_bsfs },        "show available bit stream filters" },     \
    { "protocols",   OPT_EXIT,             { .func_arg = show_protocols },   "show available protocols" },              \
    { "filters",     OPT_EXIT,             { .func_arg = show_filters },     "show available filters" },                \
    { "pix_fmts",    OPT_EXIT,             { .func_arg = show_pix_fmts },    "show available pixel formats" },          \
    { "layouts",     OPT_EXIT,             { .func_arg = show_layouts },     "show standard channel layouts" },         \
    { "sample_fmts", OPT_EXIT,             { .func_arg = show_sample_fmts }, "show available audio sample formats" },   \
    { "dispositions", OPT_EXIT,            { .func_arg = show_dispositions}, "show available stream dispositions" },    \
    { "colors",      OPT_EXIT,             { .func_arg = show_colors },      "show available color names" },            \
    { "loglevel",    HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
    { "v",           HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
    { "report",      0,                    { .func_arg = opt_report },       "generate a report" },                     \
    { "max_alloc",   HAS_ARG,              { .func_arg = opt_max_alloc },    "set maximum size of a single allocated block", "bytes" }, \
    { "cpuflags",    HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags },     "force specific cpu flags", "flags" },     \
    { "cpucount",    HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpucount },     "force specific cpu count", "count" },     \
    { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner},     "do not show program banner", "hide_banner" },          \
    CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                    \
 /**
 * Show help for all options with given flags in class and all its
 * children.
@@ -324,6 +276,7 @@ typedef struct OptionGroup {
    AVDictionary *codec_opts;
    AVDictionary *format_opts;
    AVDictionary *resample_opts;
    AVDictionary *sws_dict;
    AVDictionary *swr_opts;
 } OptionGroup;
@@ -420,7 +373,7 @@ int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
 * @return a pointer to the created dictionary
 */
 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
-                                AVFormatContext *s, AVStream *st, const AVCodec *codec);
+                                AVFormatContext *s, AVStream *st, AVCodec *codec);
 /**
 * Setup AVCodecContext options for avformat_find_stream_info().
@@ -430,8 +383,8 @@ AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
 * Each dictionary will contain the options from codec_opts which can
 * be applied to the corresponding stream codec context.
 *
- * @return pointer to the created array of dictionaries.
+ * @return pointer to the created array of dictionaries, NULL if it
- * Calls exit() on failure.
+ * cannot be created
 */
 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
                                           AVDictionary *codec_opts);
@@ -483,20 +436,6 @@ int show_license(void *optctx, const char *opt, const char *arg);
 */
 int show_formats(void *optctx, const char *opt, const char *arg);
 /**
 * Print a listing containing all the muxers supported by the
 * program (including devices).
 * This option processing function does not utilize the arguments.
 */
 int show_muxers(void *optctx, const char *opt, const char *arg);
 /**
 * Print a listing containing all the demuxer supported by the
 * program (including devices).
 * This option processing function does not utilize the arguments.
 */
 int show_demuxers(void *optctx, const char *opt, const char *arg);
 /**
 * Print a listing containing all the devices supported by the
 * program.
@@ -506,13 +445,13 @@ int show_devices(void *optctx, const char *opt, const char *arg);
 #if CONFIG_AVDEVICE
 /**
- * Print a listing containing autodetected sinks of the output device.
+ * Print a listing containing audodetected sinks of the output device.
 * Device name with options may be passed as an argument to limit results.
 */
 int show_sinks(void *optctx, const char *opt, const char *arg);
 /**
- * Print a listing containing autodetected sources of the input device.
+ * Print a listing containing audodetected sources of the input device.
 * Device name with options may be passed as an argument to limit results.
 */
 int show_sources(void *optctx, const char *opt, const char *arg);
@@ -578,11 +517,6 @@ int show_layouts(void *optctx, const char *opt, const char *arg);
 */
 int show_sample_fmts(void *optctx, const char *opt, const char *arg);
 /**
 * Print a listing containing all supported stream dispositions.
 */
 int show_dispositions(void *optctx, const char *opt, const char *arg);
 /**
 * Print a listing containing all the color names and values recognized
 * by the program.
@@ -628,34 +562,14 @@ FILE *get_preset_file(char *filename, size_t filename_size,
 */
 void *grow_array(void *array, int elem_size, int *size, int new_size);
 /**
 * Atomically add a new element to an array of pointers, i.e. allocate
 * a new entry, reallocate the array of pointers and make the new last
 * member of this array point to the newly allocated buffer.
 * Calls exit() on failure.
 *
 * @param array     array of pointers to reallocate
 * @param elem_size size of the new element to allocate
 * @param nb_elems  pointer to the number of elements of the array array;
 *                  *nb_elems will be incremented by one by this function.
 * @return pointer to the newly allocated entry
 */
 void *allocate_array_elem(void *array, size_t elem_size, int *nb_elems);
 #define media_type_string av_get_media_type_string
 #define GROW_ARRAY(array, nb_elems)\
    array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
 #define ALLOC_ARRAY_ELEM(array, nb_elems)\
    allocate_array_elem(&array, sizeof(*array[0]), &nb_elems)
 #define GET_PIX_FMT_NAME(pix_fmt)\
    const char *name = av_get_pix_fmt_name(pix_fmt);
 #define GET_CODEC_NAME(id)\
    const char *name = avcodec_descriptor_get(id)->name;
 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
    const char *name = av_get_sample_fmt_name(sample_fmt)
@@ -671,6 +585,6 @@ void *allocate_array_elem(void *array, size_t elem_size, int *nb_elems);
    char name[128];\
    av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
-double get_rotation(int32_t *displaymatrix);
+double get_rotation(AVStream *st);
-#endif /* FFTOOLS_CMDUTILS_H */
+#endif /* CMDUTILS_H */
--- a/cmdutils_common_opts.h
+++ b/cmdutils_common_opts.h
@@ -0,0 +1,35 @@
    { "L"          , OPT_EXIT, {.func_arg = show_license},      "show license" },
    { "h"          , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
    { "?"          , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
    { "help"       , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
    { "-help"      , OPT_EXIT, {.func_arg = show_help},         "show help", "topic" },
    { "version"    , OPT_EXIT, {.func_arg = show_version},      "show version" },
    { "buildconf"  , OPT_EXIT, {.func_arg = show_buildconf},    "show build configuration" },
    { "formats"    , OPT_EXIT, {.func_arg = show_formats  },    "show available formats" },
    { "devices"    , OPT_EXIT, {.func_arg = show_devices  },    "show available devices" },
    { "codecs"     , OPT_EXIT, {.func_arg = show_codecs   },    "show available codecs" },
    { "decoders"   , OPT_EXIT, {.func_arg = show_decoders },    "show available decoders" },
    { "encoders"   , OPT_EXIT, {.func_arg = show_encoders },    "show available encoders" },
    { "bsfs"       , OPT_EXIT, {.func_arg = show_bsfs     },    "show available bit stream filters" },
    { "protocols"  , OPT_EXIT, {.func_arg = show_protocols},    "show available protocols" },
    { "filters"    , OPT_EXIT, {.func_arg = show_filters  },    "show available filters" },
    { "pix_fmts"   , OPT_EXIT, {.func_arg = show_pix_fmts },    "show available pixel formats" },
    { "layouts"    , OPT_EXIT, {.func_arg = show_layouts  },    "show standard channel layouts" },
    { "sample_fmts", OPT_EXIT, {.func_arg = show_sample_fmts }, "show available audio sample formats" },
    { "colors"     , OPT_EXIT, {.func_arg = show_colors },      "show available color names" },
    { "loglevel"   , HAS_ARG,  {.func_arg = opt_loglevel},      "set logging level", "loglevel" },
    { "v",           HAS_ARG,  {.func_arg = opt_loglevel},      "set logging level", "loglevel" },
    { "report"     , 0,        {(void*)opt_report}, "generate a report" },
    { "max_alloc"  , HAS_ARG,  {.func_arg = opt_max_alloc},     "set maximum size of a single allocated block", "bytes" },
    { "cpuflags"   , HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags }, "force specific cpu flags", "flags" },
    { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner},     "do not show program banner", "hide_banner" },
 #if CONFIG_OPENCL
    { "opencl_bench", OPT_EXIT, {.func_arg = opt_opencl_bench}, "run benchmark on all OpenCL devices and show results" },
    { "opencl_options", HAS_ARG, {.func_arg = opt_opencl},      "set OpenCL environment options" },
 #endif
 #if CONFIG_AVDEVICE
    { "sources"    , OPT_EXIT | HAS_ARG, { .func_arg = show_sources },
      "list sources of the input device", "device" },
    { "sinks"      , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks },
      "list sinks of the output device", "device" },
 #endif
--- a/cmdutils_opencl.c
+++ b/cmdutils_opencl.c
@@ -0,0 +1,278 @@
 /*
 * Copyright (C) 2013 Lenny Wang
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #include "libavutil/opt.h"
 #include "libavutil/time.h"
 #include "libavutil/log.h"
 #include "libavutil/opencl.h"
 #include "libavutil/avstring.h"
 #include "cmdutils.h"
 typedef struct {
    int platform_idx;
    int device_idx;
    char device_name[64];
    int64_t runtime;
 } OpenCLDeviceBenchmark;
 const char *ocl_bench_source = AV_OPENCL_KERNEL(
 inline unsigned char clip_uint8(int a)
 {
    if (a & (~0xFF))
        return (-a)>>31;
    else
        return a;
 }
 kernel void unsharp_bench(
                    global unsigned char *src,
                    global unsigned char *dst,
                    global int *mask,
                    int width,
                    int height)
 {
    int i, j, local_idx, lc_idx, sum = 0;
    int2 thread_idx, block_idx, global_idx, lm_idx;
    thread_idx.x = get_local_id(0);
    thread_idx.y = get_local_id(1);
    block_idx.x = get_group_id(0);
    block_idx.y = get_group_id(1);
    global_idx.x = get_global_id(0);
    global_idx.y = get_global_id(1);
    local uchar data[32][32];
    local int lc[128];
    for (i = 0; i <= 1; i++) {
        lm_idx.y = -8 + (block_idx.y + i) * 16 + thread_idx.y;
        lm_idx.y = lm_idx.y < 0 ? 0 : lm_idx.y;
        lm_idx.y = lm_idx.y >= height ? height - 1: lm_idx.y;
        for (j = 0; j <= 1; j++) {
            lm_idx.x = -8 + (block_idx.x + j) * 16 + thread_idx.x;
            lm_idx.x = lm_idx.x < 0 ? 0 : lm_idx.x;
            lm_idx.x = lm_idx.x >= width ? width - 1: lm_idx.x;
            data[i*16 + thread_idx.y][j*16 + thread_idx.x] = src[lm_idx.y*width + lm_idx.x];
        }
    }
    local_idx = thread_idx.y*16 + thread_idx.x;
    if (local_idx < 128)
        lc[local_idx] = mask[local_idx];
    barrier(CLK_LOCAL_MEM_FENCE);
    \n#pragma unroll\n
    for (i = -4; i <= 4; i++) {
        lm_idx.y = 8 + i + thread_idx.y;
        \n#pragma unroll\n
        for (j = -4; j <= 4; j++) {
            lm_idx.x = 8 + j + thread_idx.x;
            lc_idx = (i + 4)*8 + j + 4;
            sum += (int)data[lm_idx.y][lm_idx.x] * lc[lc_idx];
        }
    }
    int temp = (int)data[thread_idx.y + 8][thread_idx.x + 8];
    int res = temp + (((temp - (int)((sum + 1<<15) >> 16))) >> 16);
    if (global_idx.x < width && global_idx.y < height)
        dst[global_idx.x + global_idx.y*width] = clip_uint8(res);
 }
 );
 #define OCLCHECK(method, ... )                                                 \
 do {                                                                           \
    status = method(__VA_ARGS__);                                              \
    if (status != CL_SUCCESS) {                                                \
        av_log(NULL, AV_LOG_ERROR, # method " error '%s'\n",                   \
               av_opencl_errstr(status));                                      \
        ret = AVERROR_EXTERNAL;                                                \
        goto end;                                                              \
    }                                                                          \
 } while (0)
 #define CREATEBUF(out, flags, size)                                            \
 do {                                                                           \
    out = clCreateBuffer(ext_opencl_env->context, flags, size, NULL, &status); \
    if (status != CL_SUCCESS) {                                                \
        av_log(NULL, AV_LOG_ERROR, "Could not create OpenCL buffer\n");        \
        ret = AVERROR_EXTERNAL;                                                \
        goto end;                                                              \
    }                                                                          \
 } while (0)
 static void fill_rand_int(int *data, int n)
 {
    int i;
    srand(av_gettime());
    for (i = 0; i < n; i++)
        data[i] = rand();
 }
 #define OPENCL_NB_ITER 5
 static int64_t run_opencl_bench(AVOpenCLExternalEnv *ext_opencl_env)
 {
    int i, arg = 0, width = 1920, height = 1088;
    int64_t start, ret = 0;
    cl_int status;
    size_t kernel_len;
    char *inbuf;
    int *mask;
    int buf_size = width * height * sizeof(char);
    int mask_size = sizeof(uint32_t) * 128;
    cl_mem cl_mask, cl_inbuf, cl_outbuf;
    cl_kernel kernel = NULL;
    cl_program program = NULL;
    size_t local_work_size_2d[2] = {16, 16};
    size_t global_work_size_2d[2] = {(size_t)width, (size_t)height};
    if (!(inbuf = av_malloc(buf_size)) || !(mask = av_malloc(mask_size))) {
        av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
        ret = AVERROR(ENOMEM);
        goto end;
    }
    fill_rand_int((int*)inbuf, buf_size/4);
    fill_rand_int(mask, mask_size/4);
    CREATEBUF(cl_mask, CL_MEM_READ_ONLY, mask_size);
    CREATEBUF(cl_inbuf, CL_MEM_READ_ONLY, buf_size);
    CREATEBUF(cl_outbuf, CL_MEM_READ_WRITE, buf_size);
    kernel_len = strlen(ocl_bench_source);
    program = clCreateProgramWithSource(ext_opencl_env->context, 1, &ocl_bench_source,
                                        &kernel_len, &status);
    if (status != CL_SUCCESS || !program) {
        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark program\n");
        ret = AVERROR_EXTERNAL;
        goto end;
    }
    status = clBuildProgram(program, 1, &(ext_opencl_env->device_id), NULL, NULL, NULL);
    if (status != CL_SUCCESS) {
        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to build benchmark program\n");
        ret = AVERROR_EXTERNAL;
        goto end;
    }
    kernel = clCreateKernel(program, "unsharp_bench", &status);
    if (status != CL_SUCCESS) {
        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark kernel\n");
        ret = AVERROR_EXTERNAL;
        goto end;
    }
    OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_inbuf, CL_TRUE, 0,
             buf_size, inbuf, 0, NULL, NULL);
    OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_mask, CL_TRUE, 0,
             mask_size, mask, 0, NULL, NULL);
    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_inbuf);
    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_outbuf);
    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_mask);
    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &width);
    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &height);
    start = av_gettime_relative();
    for (i = 0; i < OPENCL_NB_ITER; i++)
        OCLCHECK(clEnqueueNDRangeKernel, ext_opencl_env->command_queue, kernel, 2, NULL,
                 global_work_size_2d, local_work_size_2d, 0, NULL, NULL);
    clFinish(ext_opencl_env->command_queue);
    ret = (av_gettime_relative() - start)/OPENCL_NB_ITER;
 end:
    if (kernel)
        clReleaseKernel(kernel);
    if (program)
        clReleaseProgram(program);
    if (cl_inbuf)
        clReleaseMemObject(cl_inbuf);
    if (cl_outbuf)
        clReleaseMemObject(cl_outbuf);
    if (cl_mask)
        clReleaseMemObject(cl_mask);
    av_free(inbuf);
    av_free(mask);
    return ret;
 }
 static int compare_ocl_device_desc(const void *a, const void *b)
 {
    const OpenCLDeviceBenchmark* va = (const OpenCLDeviceBenchmark*)a;
    const OpenCLDeviceBenchmark* vb = (const OpenCLDeviceBenchmark*)b;
    return FFDIFFSIGN(va->runtime , vb->runtime);
 }
 int opt_opencl_bench(void *optctx, const char *opt, const char *arg)
 {
    int i, j, nb_devices = 0, count = 0;
    int64_t score = 0;
    AVOpenCLDeviceList *device_list;
    AVOpenCLDeviceNode *device_node = NULL;
    OpenCLDeviceBenchmark *devices = NULL;
    cl_platform_id platform;
    av_opencl_get_device_list(&device_list);
    for (i = 0; i < device_list->platform_num; i++)
        nb_devices += device_list->platform_node[i]->device_num;
    if (!nb_devices) {
        av_log(NULL, AV_LOG_ERROR, "No OpenCL device detected!\n");
        return AVERROR(EINVAL);
    }
    if (!(devices = av_malloc_array(nb_devices, sizeof(OpenCLDeviceBenchmark)))) {
        av_log(NULL, AV_LOG_ERROR, "Could not allocate buffer\n");
        return AVERROR(ENOMEM);
    }
    for (i = 0; i < device_list->platform_num; i++) {
        for (j = 0; j < device_list->platform_node[i]->device_num; j++) {
            device_node = device_list->platform_node[i]->device_node[j];
            platform = device_list->platform_node[i]->platform_id;
            score = av_opencl_benchmark(device_node, platform, run_opencl_bench);
            if (score > 0) {
                devices[count].platform_idx = i;
                devices[count].device_idx = j;
                devices[count].runtime = score;
                av_strlcpy(devices[count].device_name, device_node->device_name,
                           sizeof(devices[count].device_name));
                count++;
            }
        }
    }
    qsort(devices, count, sizeof(OpenCLDeviceBenchmark), compare_ocl_device_desc);
    fprintf(stderr, "platform_idx\tdevice_idx\tdevice_name\truntime\n");
    for (i = 0; i < count; i++)
        fprintf(stdout, "%d\t%d\t%s\t%"PRId64"\n",
                devices[i].platform_idx, devices[i].device_idx,
                devices[i].device_name, devices[i].runtime);
    av_opencl_free_device_list(&device_list);
    av_free(devices);
    return 0;
 }
 int opt_opencl(void *optctx, const char *opt, const char *arg)
 {
    char *key, *value;
    const char *opts = arg;
    int ret = 0;
    while (*opts) {
        ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value);
        if (ret < 0)
            return ret;
        ret = av_opencl_set_option(key, value);
        if (ret < 0)
            return ret;
        if (*opts)
            opts++;
    }
    return ret;
 }
--- a/ffbuild/common.mak
+++ b/ffbuild/common.mak
@@ -2,24 +2,24 @@
 # common bits used by all libraries
 #
-DEFAULT_X86ASMD=.dbg
+# first so "all" becomes default target
 all: all-yes
 DEFAULT_YASMD=.dbg
 ifeq ($(DBG),1)
-X86ASMD=$(DEFAULT_X86ASMD)
+YASMD=$(DEFAULT_YASMD)
 else
-X86ASMD=
+YASMD=
 endif
 ifndef SUBDIR
 BIN2CEXE = ffbuild/bin2c$(HOSTEXESUF)
 BIN2C = $(BIN2CEXE)
 ifndef V
 Q      = @
 ECHO   = printf "$(1)\t%s\n" $(2)
-BRIEF  = CC CXX OBJCC HOSTCC HOSTLD AS X86ASM AR LD STRIP CP WINDRES NVCC BIN2C
+BRIEF  = CC CXX OBJCC HOSTCC HOSTLD AS YASM AR LD STRIP CP WINDRES
-SILENT = DEPCC DEPHOSTCC DEPAS DEPX86ASM RANLIB RM
+SILENT = DEPCC DEPHOSTCC DEPAS DEPYASM RANLIB RM
 MSG    = $@
 M      = @$(call ECHO,$(TAG),$@);
@@ -29,7 +29,7 @@ $(foreach VAR,$(SILENT),$(eval override $(VAR) = @$($(VAR))))
 $(eval INSTALL = @$(call ECHO,INSTALL,$$(^:$(SRC_DIR)/%=%)); $(INSTALL))
 endif
-ALLFFLIBS = avcodec avdevice avfilter avformat avutil postproc swscale swresample
+ALLFFLIBS = avcodec avdevice avfilter avformat avresample avutil postproc swscale swresample
 # NASM requires -I path terminated with /
 IFLAGS     := -I. -I$(SRC_LINK)/
@@ -40,39 +40,21 @@ OBJCFLAGS  += $(EOBJCFLAGS)
 OBJCCFLAGS  = $(CPPFLAGS) $(CFLAGS) $(OBJCFLAGS)
 ASFLAGS    := $(CPPFLAGS) $(ASFLAGS)
 CXXFLAGS   := $(CPPFLAGS) $(CFLAGS) $(CXXFLAGS)
-X86ASMFLAGS += $(IFLAGS:%=%/) -I$(<D)/ -Pconfig.asm
+YASMFLAGS  += $(IFLAGS:%=%/) -Pconfig.asm
 HOSTCCFLAGS = $(IFLAGS) $(HOSTCPPFLAGS) $(HOSTCFLAGS)
 LDFLAGS    := $(ALLFFLIBS:%=$(LD_PATH)lib%) $(LDFLAGS)
 define COMPILE
       $(call $(1)DEP,$(1))
-       $($(1)) $($(1)FLAGS) $($(2)) $($(1)_DEPFLAGS) $($(1)_C) $($(1)_O) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<)
+       $($(1)) $($(1)FLAGS) $($(1)_DEPFLAGS) $($(1)_C) $($(1)_O) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<)
 endef
 COMPILE_C = $(call COMPILE,CC)
 COMPILE_CXX = $(call COMPILE,CXX)
 COMPILE_S = $(call COMPILE,AS)
 COMPILE_M = $(call COMPILE,OBJCC)
 COMPILE_X86ASM = $(call COMPILE,X86ASM)
 COMPILE_HOSTC = $(call COMPILE,HOSTCC)
 COMPILE_NVCC = $(call COMPILE,NVCC)
 COMPILE_MMI = $(call COMPILE,CC,MMIFLAGS)
 COMPILE_MSA = $(call COMPILE,CC,MSAFLAGS)
 COMPILE_LSX = $(call COMPILE,CC,LSXFLAGS)
 COMPILE_LASX = $(call COMPILE,CC,LASXFLAGS)
 %_mmi.o: %_mmi.c
 	$(COMPILE_MMI)
 %_msa.o: %_msa.c
 	$(COMPILE_MSA)
 %_lsx.o: %_lsx.c
 	$(COMPILE_LSX)
 %_lasx.o: %_lasx.c
 	$(COMPILE_LASX)
 %.o: %.c
 	$(COMPILE_C)
@@ -92,16 +74,8 @@ COMPILE_LASX = $(call COMPILE,CC,LASXFLAGS)
 %_host.o: %.c
 	$(COMPILE_HOSTC)
 %$(DEFAULT_X86ASMD).asm: %.asm
 	$(DEPX86ASM) $(X86ASMFLAGS) -M -o $@ $< > $(@:.asm=.d)
 	$(X86ASM) $(X86ASMFLAGS) -e $< | sed '/^%/d;/^$$/d;' > $@
 %.o: %.asm
 	$(COMPILE_X86ASM)
 	-$(if $(ASMSTRIPFLAGS), $(STRIP) $(ASMSTRIPFLAGS) $@)
 %.o: %.rc
-	$(WINDRES) $(IFLAGS) $(foreach ARG,$(CC_DEPFLAGS),--preprocessor-arg "$(ARG)") -o $@ $<
+	$(WINDRES) $(IFLAGS) --preprocessor "$(DEPWINDRES) -E -xc-header -DRC_INVOKED $(CC_DEPFLAGS)" -o $@ $<
 %.i: %.c
 	$(CC) $(CCFLAGS) $(CC_E) $<
@@ -109,40 +83,15 @@ COMPILE_LASX = $(call COMPILE,CC,LASXFLAGS)
 %.h.c:
 	$(Q)echo '#include "$*.h"' >$@
-$(BIN2CEXE): ffbuild/bin2c_host.o
+%.ver: %.v
-	$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTEXTRALIBS)
+	$(Q)sed 's/$$MAJOR/$($(basename $(@F))_VERSION_MAJOR)/' $^ | sed -e 's/:/:\
 /' -e 's/; /;\
 /g' > $@
-%.metal.air: %.metal
+%.c %.h: TAG = GEN
 	$(METALCC) $< -o $@
 %.metallib: %.metal.air
 	$(METALLIB) --split-module-without-linking $< -o $@
 %.metallib.c: %.metallib $(BIN2CEXE)
 	$(BIN2C) $< $@ $(subst .,_,$(basename $(notdir $@)))
 %.ptx: %.cu $(SRC_PATH)/compat/cuda/cuda_runtime.h
 	$(COMPILE_NVCC)
 ifdef CONFIG_PTX_COMPRESSION
 %.ptx.gz: TAG = GZIP
 %.ptx.gz: %.ptx
 	$(M)gzip -c9 $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) >$@
 %.ptx.c: %.ptx.gz $(BIN2CEXE)
 	$(BIN2C) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) $@ $(subst .,_,$(basename $(notdir $@)))
 else
 %.ptx.c: %.ptx $(BIN2CEXE)
 	$(BIN2C) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) $@ $(subst .,_,$(basename $(notdir $@)))
 endif
 clean::
 	$(RM) $(BIN2CEXE)
 %.c %.h %.pc %.ver %.version: TAG = GEN
 # Dummy rule to stop make trying to rebuild removed or renamed headers
-%.h %_template.c:
+%.h:
 	@:
 # Disable suffix rules.  Most of the builtin rules are suffix rules,
@@ -153,22 +102,18 @@ clean::
 $(OBJS):
 endif
-include $(SRC_PATH)/ffbuild/arch.mak
+include $(SRC_PATH)/arch.mak
 OBJS      += $(OBJS-yes)
 SLIBOBJS  += $(SLIBOBJS-yes)
 SHLIBOBJS += $(SHLIBOBJS-yes)
 STLIBOBJS += $(STLIBOBJS-yes)
 FFLIBS    := $($(NAME)_FFLIBS) $(FFLIBS-yes) $(FFLIBS)
 TESTPROGS += $(TESTPROGS-yes)
 LDLIBS       = $(FFLIBS:%=%$(BUILDSUF))
-FFEXTRALIBS := $(LDLIBS:%=$(LD_LIB)) $(foreach lib,EXTRALIBS-$(NAME) $(FFLIBS:%=EXTRALIBS-%),$($(lib))) $(EXTRALIBS)
+FFEXTRALIBS := $(LDLIBS:%=$(LD_LIB)) $(EXTRALIBS)
 OBJS      := $(sort $(OBJS:%=$(SUBDIR)%))
 SLIBOBJS  := $(sort $(SLIBOBJS:%=$(SUBDIR)%))
 SHLIBOBJS := $(sort $(SHLIBOBJS:%=$(SUBDIR)%))
 STLIBOBJS := $(sort $(STLIBOBJS:%=$(SUBDIR)%))
 TESTOBJS  := $(TESTOBJS:%=$(SUBDIR)tests/%) $(TESTPROGS:%=$(SUBDIR)tests/%.o)
 TESTPROGS := $(TESTPROGS:%=$(SUBDIR)tests/%$(EXESUF))
 HOSTOBJS  := $(HOSTPROGS:%=$(SUBDIR)%.o)
@@ -187,10 +132,8 @@ ALLHEADERS := $(subst $(SRC_DIR)/,$(SUBDIR),$(wildcard $(SRC_DIR)/*.h $(SRC_DIR)
 SKIPHEADERS += $(ARCH_HEADERS:%=$(ARCH)/%) $(SKIPHEADERS-)
 SKIPHEADERS := $(SKIPHEADERS:%=$(SUBDIR)%)
 HOBJS        = $(filter-out $(SKIPHEADERS:.h=.h.o),$(ALLHEADERS:.h=.h.o))
 PTXOBJS      = $(filter %.ptx.o,$(OBJS))
 $(HOBJS):     CCFLAGS += $(CFLAGS_HEADERS)
 checkheaders: $(HOBJS)
-.SECONDARY:   $(HOBJS:.o=.c) $(PTXOBJS:.o=.c) $(PTXOBJS:.o=.gz) $(PTXOBJS:.o=)
+.SECONDARY:   $(HOBJS:.o=.c)
 alltools: $(TOOLS)
@@ -198,20 +141,19 @@ $(HOSTOBJS): %.o: %.c
 	$(COMPILE_HOSTC)
 $(HOSTPROGS): %$(HOSTEXESUF): %.o
-	$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTEXTRALIBS)
+	$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTLIBS)
 $(OBJS):     | $(sort $(dir $(OBJS)))
 $(HOBJS):    | $(sort $(dir $(HOBJS)))
 $(HOSTOBJS): | $(sort $(dir $(HOSTOBJS)))
 $(SLIBOBJS): | $(sort $(dir $(SLIBOBJS)))
 $(SHLIBOBJS): | $(sort $(dir $(SHLIBOBJS)))
 $(STLIBOBJS): | $(sort $(dir $(STLIBOBJS)))
 $(TESTOBJS): | $(sort $(dir $(TESTOBJS)))
 $(TOOLOBJS): | tools
-OUTDIRS := $(OUTDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(SLIBOBJS) $(SHLIBOBJS) $(STLIBOBJS) $(TESTOBJS))
+OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(SLIBOBJS) $(TESTOBJS))
-CLEANSUFFIXES     = *.d *.gcda *.gcno *.h.c *.ho *.map *.o *.pc *.ptx *.ptx.gz *.ptx.c *.ver *.version *$(DEFAULT_X86ASMD).asm *~ *.ilk *.pdb
+CLEANSUFFIXES     = *.d *.o *~ *.h.c *.map *.ver *.ver-sol2 *.ho *.gcno *.gcda *$(DEFAULT_YASMD).asm
 DISTCLEANSUFFIXES = *.pc
 LIBSUFFIXES       = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a
 define RULES
@@ -221,4 +163,4 @@ endef
 $(eval $(RULES))
-include $(wildcard $(OBJS:.o=.d) $(HOSTOBJS:.o=.d) $(TESTOBJS:.o=.d) $(HOBJS:.o=.d) $(SHLIBOBJS:.o=.d) $(STLIBOBJS:.o=.d) $(SLIBOBJS:.o=.d)) $(OBJS:.o=$(DEFAULT_X86ASMD).d)
+-include $(wildcard $(OBJS:.o=.d) $(HOSTOBJS:.o=.d) $(TESTOBJS:.o=.d) $(HOBJS:.o=.d) $(SLIBOBJS:.o=.d)) $(OBJS:.o=$(DEFAULT_YASMD).d)
--- a/compat/atomics/dummy/stdatomic.h
+++ b/compat/atomics/dummy/stdatomic.h
@@ -1,176 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 /*
 * based on vlc_atomic.h from VLC
 * Copyright (C) 2010 Rémi Denis-Courmont
 */
 #ifndef COMPAT_ATOMICS_DUMMY_STDATOMIC_H
 #define COMPAT_ATOMICS_DUMMY_STDATOMIC_H
 #include <stdint.h>
 #define ATOMIC_FLAG_INIT 0
 #define ATOMIC_VAR_INIT(value) (value)
 #define atomic_init(obj, value) \
 do {                            \
    *(obj) = (value);           \
 } while(0)
 #define kill_dependency(y) ((void)0)
 #define atomic_thread_fence(order) \
    ((void)0)
 #define atomic_signal_fence(order) \
    ((void)0)
 #define atomic_is_lock_free(obj) 0
 typedef intptr_t atomic_flag;
 typedef intptr_t atomic_bool;
 typedef intptr_t atomic_char;
 typedef intptr_t atomic_schar;
 typedef intptr_t atomic_uchar;
 typedef intptr_t atomic_short;
 typedef intptr_t atomic_ushort;
 typedef intptr_t atomic_int;
 typedef intptr_t atomic_uint;
 typedef intptr_t atomic_long;
 typedef intptr_t atomic_ulong;
 typedef intptr_t atomic_llong;
 typedef intptr_t atomic_ullong;
 typedef intptr_t atomic_wchar_t;
 typedef intptr_t atomic_int_least8_t;
 typedef intptr_t atomic_uint_least8_t;
 typedef intptr_t atomic_int_least16_t;
 typedef intptr_t atomic_uint_least16_t;
 typedef intptr_t atomic_int_least32_t;
 typedef intptr_t atomic_uint_least32_t;
 typedef intptr_t atomic_int_least64_t;
 typedef intptr_t atomic_uint_least64_t;
 typedef intptr_t atomic_int_fast8_t;
 typedef intptr_t atomic_uint_fast8_t;
 typedef intptr_t atomic_int_fast16_t;
 typedef intptr_t atomic_uint_fast16_t;
 typedef intptr_t atomic_int_fast32_t;
 typedef intptr_t atomic_uint_fast32_t;
 typedef intptr_t atomic_int_fast64_t;
 typedef intptr_t atomic_uint_fast64_t;
 typedef intptr_t atomic_intptr_t;
 typedef intptr_t atomic_uintptr_t;
 typedef intptr_t atomic_size_t;
 typedef intptr_t atomic_ptrdiff_t;
 typedef intptr_t atomic_intmax_t;
 typedef intptr_t atomic_uintmax_t;
 #define atomic_store(object, desired)   \
 do {                                    \
    *(object) = (desired);              \
 } while (0)
 #define atomic_store_explicit(object, desired, order) \
    atomic_store(object, desired)
 #define atomic_load(object) \
    (*(object))
 #define atomic_load_explicit(object, order) \
    atomic_load(object)
 static inline intptr_t atomic_exchange(intptr_t *object, intptr_t desired)
 {
    intptr_t ret = *object;
    *object = desired;
    return ret;
 }
 #define atomic_exchange_explicit(object, desired, order) \
    atomic_exchange(object, desired)
 static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected,
                                                 intptr_t desired)
 {
    int ret;
    if (*object == *expected) {
        *object = desired;
        ret = 1;
    } else {
        *expected = *object;
        ret = 0;
    }
    return ret;
 }
 #define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak(object, expected, desired) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_weak(object, expected, desired)
 #define FETCH_MODIFY(opname, op)                                            \
 static inline intptr_t atomic_fetch_ ## opname(intptr_t *object, intptr_t operand) \
 {                                                                    \
    intptr_t ret;                                                    \
    ret = *object;                                                   \
    *object = *object op operand;                                    \
    return ret;                                                      \
 }
 FETCH_MODIFY(add, +)
 FETCH_MODIFY(sub, -)
 FETCH_MODIFY(or,  |)
 FETCH_MODIFY(xor, ^)
 FETCH_MODIFY(and, &)
 #undef FETCH_MODIFY
 #define atomic_fetch_add_explicit(object, operand, order) \
    atomic_fetch_add(object, operand)
 #define atomic_fetch_sub_explicit(object, operand, order) \
    atomic_fetch_sub(object, operand)
 #define atomic_fetch_or_explicit(object, operand, order) \
    atomic_fetch_or(object, operand)
 #define atomic_fetch_xor_explicit(object, operand, order) \
    atomic_fetch_xor(object, operand)
 #define atomic_fetch_and_explicit(object, operand, order) \
    atomic_fetch_and(object, operand)
 #define atomic_flag_test_and_set(object) \
    atomic_exchange(object, 1)
 #define atomic_flag_test_and_set_explicit(object, order) \
    atomic_flag_test_and_set(object)
 #define atomic_flag_clear(object) \
    atomic_store(object, 0)
 #define atomic_flag_clear_explicit(object, order) \
    atomic_flag_clear(object)
 #endif /* COMPAT_ATOMICS_DUMMY_STDATOMIC_H */
--- a/compat/atomics/gcc/stdatomic.h
+++ b/compat/atomics/gcc/stdatomic.h
@@ -1,173 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 /*
 * based on vlc_atomic.h from VLC
 * Copyright (C) 2010 Rémi Denis-Courmont
 */
 #ifndef COMPAT_ATOMICS_GCC_STDATOMIC_H
 #define COMPAT_ATOMICS_GCC_STDATOMIC_H
 #include <stddef.h>
 #include <stdint.h>
 #define ATOMIC_FLAG_INIT 0
 #define ATOMIC_VAR_INIT(value) (value)
 #define atomic_init(obj, value) \
 do {                            \
    *(obj) = (value);           \
 } while(0)
 #define kill_dependency(y) ((void)0)
 #define atomic_thread_fence(order) \
    __sync_synchronize()
 #define atomic_signal_fence(order) \
    ((void)0)
 #define atomic_is_lock_free(obj) 0
 typedef         _Bool      atomic_flag;
 typedef         _Bool      atomic_bool;
 typedef          char      atomic_char;
 typedef   signed char      atomic_schar;
 typedef unsigned char      atomic_uchar;
 typedef          short     atomic_short;
 typedef unsigned short     atomic_ushort;
 typedef          int       atomic_int;
 typedef unsigned int       atomic_uint;
 typedef          long      atomic_long;
 typedef unsigned long      atomic_ulong;
 typedef          long long atomic_llong;
 typedef unsigned long long atomic_ullong;
 typedef          wchar_t   atomic_wchar_t;
 typedef       int_least8_t atomic_int_least8_t;
 typedef      uint_least8_t atomic_uint_least8_t;
 typedef      int_least16_t atomic_int_least16_t;
 typedef     uint_least16_t atomic_uint_least16_t;
 typedef      int_least32_t atomic_int_least32_t;
 typedef     uint_least32_t atomic_uint_least32_t;
 typedef      int_least64_t atomic_int_least64_t;
 typedef     uint_least64_t atomic_uint_least64_t;
 typedef       int_fast8_t atomic_int_fast8_t;
 typedef      uint_fast8_t atomic_uint_fast8_t;
 typedef      int_fast16_t atomic_int_fast16_t;
 typedef     uint_fast16_t atomic_uint_fast16_t;
 typedef      int_fast32_t atomic_int_fast32_t;
 typedef     uint_fast32_t atomic_uint_fast32_t;
 typedef      int_fast64_t atomic_int_fast64_t;
 typedef     uint_fast64_t atomic_uint_fast64_t;
 typedef          intptr_t atomic_intptr_t;
 typedef         uintptr_t atomic_uintptr_t;
 typedef            size_t atomic_size_t;
 typedef         ptrdiff_t atomic_ptrdiff_t;
 typedef          intmax_t atomic_intmax_t;
 typedef         uintmax_t atomic_uintmax_t;
 #define atomic_store(object, desired)   \
 do {                                    \
    *(object) = (desired);              \
    __sync_synchronize();               \
 } while (0)
 #define atomic_store_explicit(object, desired, order) \
    atomic_store(object, desired)
 #define atomic_load(object) \
    (__sync_synchronize(), *(object))
 #define atomic_load_explicit(object, order) \
    atomic_load(object)
 #define atomic_exchange(object, desired)                            \
 ({                                                                  \
    __typeof__(object) _obj = (object);                             \
    __typeof__(*object) _old;                                       \
    do                                                              \
        _old = atomic_load(_obj);                                   \
    while (!__sync_bool_compare_and_swap(_obj, _old, (desired)));   \
    _old;                                                           \
 })
 #define atomic_exchange_explicit(object, desired, order) \
    atomic_exchange(object, desired)
 #define atomic_compare_exchange_strong(object, expected, desired)   \
 ({                                                                  \
    __typeof__(object) _exp = (expected);                           \
    __typeof__(*object) _old = *_exp;                               \
    *_exp = __sync_val_compare_and_swap((object), _old, (desired)); \
    *_exp == _old;                                                  \
 })
 #define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak(object, expected, desired) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_weak(object, expected, desired)
 #define atomic_fetch_add(object, operand) \
    __sync_fetch_and_add(object, operand)
 #define atomic_fetch_add_explicit(object, operand, order) \
    atomic_fetch_add(object, operand)
 #define atomic_fetch_sub(object, operand) \
    __sync_fetch_and_sub(object, operand)
 #define atomic_fetch_sub_explicit(object, operand, order) \
    atomic_fetch_sub(object, operand)
 #define atomic_fetch_or(object, operand) \
    __sync_fetch_and_or(object, operand)
 #define atomic_fetch_or_explicit(object, operand, order) \
    atomic_fetch_or(object, operand)
 #define atomic_fetch_xor(object, operand) \
    __sync_fetch_and_xor(object, operand)
 #define atomic_fetch_xor_explicit(object, operand, order) \
    atomic_fetch_xor(object, operand)
 #define atomic_fetch_and(object, operand) \
    __sync_fetch_and_and(object, operand)
 #define atomic_fetch_and_explicit(object, operand, order) \
    atomic_fetch_and(object, operand)
 #define atomic_flag_test_and_set(object) \
    atomic_exchange(object, 1)
 #define atomic_flag_test_and_set_explicit(object, order) \
    atomic_flag_test_and_set(object)
 #define atomic_flag_clear(object) \
    atomic_store(object, 0)
 #define atomic_flag_clear_explicit(object, order) \
    atomic_flag_clear(object)
 #endif /* COMPAT_ATOMICS_GCC_STDATOMIC_H */
--- a/compat/atomics/pthread/stdatomic.h
+++ b/compat/atomics/pthread/stdatomic.h
@@ -1,197 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 /*
 * based on vlc_atomic.h from VLC
 * Copyright (C) 2010 Rémi Denis-Courmont
 */
 #ifndef COMPAT_ATOMICS_PTHREAD_STDATOMIC_H
 #define COMPAT_ATOMICS_PTHREAD_STDATOMIC_H
 #include <stdint.h>
 #define ATOMIC_FLAG_INIT 0
 #define ATOMIC_VAR_INIT(value) (value)
 #define atomic_init(obj, value) \
 do {                            \
    *(obj) = (value);           \
 } while(0)
 #define kill_dependency(y) ((void)0)
 #define atomic_signal_fence(order) \
    ((void)0)
 #define atomic_is_lock_free(obj) 0
 typedef intptr_t atomic_flag;
 typedef intptr_t atomic_bool;
 typedef intptr_t atomic_char;
 typedef intptr_t atomic_schar;
 typedef intptr_t atomic_uchar;
 typedef intptr_t atomic_short;
 typedef intptr_t atomic_ushort;
 typedef intptr_t atomic_int;
 typedef intptr_t atomic_uint;
 typedef intptr_t atomic_long;
 typedef intptr_t atomic_ulong;
 typedef intptr_t atomic_llong;
 typedef intptr_t atomic_ullong;
 typedef intptr_t atomic_wchar_t;
 typedef intptr_t atomic_int_least8_t;
 typedef intptr_t atomic_uint_least8_t;
 typedef intptr_t atomic_int_least16_t;
 typedef intptr_t atomic_uint_least16_t;
 typedef intptr_t atomic_int_least32_t;
 typedef intptr_t atomic_uint_least32_t;
 typedef intptr_t atomic_int_least64_t;
 typedef intptr_t atomic_uint_least64_t;
 typedef intptr_t atomic_int_fast8_t;
 typedef intptr_t atomic_uint_fast8_t;
 typedef intptr_t atomic_int_fast16_t;
 typedef intptr_t atomic_uint_fast16_t;
 typedef intptr_t atomic_int_fast32_t;
 typedef intptr_t atomic_uint_fast32_t;
 typedef intptr_t atomic_int_fast64_t;
 typedef intptr_t atomic_uint_fast64_t;
 typedef intptr_t atomic_intptr_t;
 typedef intptr_t atomic_uintptr_t;
 typedef intptr_t atomic_size_t;
 typedef intptr_t atomic_ptrdiff_t;
 typedef intptr_t atomic_intmax_t;
 typedef intptr_t atomic_uintmax_t;
 void avpriv_atomic_lock(void);
 void avpriv_atomic_unlock(void);
 static inline void atomic_thread_fence(int order)
 {
    avpriv_atomic_lock();
    avpriv_atomic_unlock();
 }
 static inline void atomic_store(intptr_t *object, intptr_t desired)
 {
    avpriv_atomic_lock();
    *object = desired;
    avpriv_atomic_unlock();
 }
 #define atomic_store_explicit(object, desired, order) \
    atomic_store(object, desired)
 static inline intptr_t atomic_load(intptr_t *object)
 {
    intptr_t ret;
    avpriv_atomic_lock();
    ret = *object;
    avpriv_atomic_unlock();
    return ret;
 }
 #define atomic_load_explicit(object, order) \
    atomic_load(object)
 static inline intptr_t atomic_exchange(intptr_t *object, intptr_t desired)
 {
    intptr_t ret;
    avpriv_atomic_lock();
    ret     = *object;
    *object = desired;
    avpriv_atomic_unlock();
    return ret;
 }
 #define atomic_exchange_explicit(object, desired, order) \
    atomic_exchange(object, desired)
 static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected,
                                                 intptr_t desired)
 {
    int ret;
    avpriv_atomic_lock();
    if (*object == *expected) {
        ret     = 1;
        *object = desired;
    } else {
        ret = 0;
        *expected = *object;
    }
    avpriv_atomic_unlock();
    return ret;
 }
 #define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak(object, expected, desired) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_weak(object, expected, desired)
 #define FETCH_MODIFY(opname, op)                                                   \
 static inline intptr_t atomic_fetch_ ## opname(intptr_t *object, intptr_t operand) \
 {                                                                                  \
    intptr_t ret;                                                                  \
    avpriv_atomic_lock();                                                          \
    ret = *object;                                                                 \
    *object = *object op operand;                                                  \
    avpriv_atomic_unlock();                                                        \
    return ret;                                                                    \
 }
 FETCH_MODIFY(add, +)
 FETCH_MODIFY(sub, -)
 FETCH_MODIFY(or,  |)
 FETCH_MODIFY(xor, ^)
 FETCH_MODIFY(and, &)
 #undef FETCH_MODIFY
 #define atomic_fetch_add_explicit(object, operand, order) \
    atomic_fetch_add(object, operand)
 #define atomic_fetch_sub_explicit(object, operand, order) \
    atomic_fetch_sub(object, operand)
 #define atomic_fetch_or_explicit(object, operand, order) \
    atomic_fetch_or(object, operand)
 #define atomic_fetch_xor_explicit(object, operand, order) \
    atomic_fetch_xor(object, operand)
 #define atomic_fetch_and_explicit(object, operand, order) \
    atomic_fetch_and(object, operand)
 #define atomic_flag_test_and_set(object) \
    atomic_exchange(object, 1)
 #define atomic_flag_test_and_set_explicit(object, order) \
    atomic_flag_test_and_set(object)
 #define atomic_flag_clear(object) \
    atomic_store(object, 0)
 #define atomic_flag_clear_explicit(object, order) \
    atomic_flag_clear(object)
 #endif /* COMPAT_ATOMICS_PTHREAD_STDATOMIC_H */
--- a/compat/atomics/suncc/stdatomic.h
+++ b/compat/atomics/suncc/stdatomic.h
@@ -1,186 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #ifndef COMPAT_ATOMICS_SUNCC_STDATOMIC_H
 #define COMPAT_ATOMICS_SUNCC_STDATOMIC_H
 #include <atomic.h>
 #include <mbarrier.h>
 #include <stddef.h>
 #include <stdint.h>
 #define ATOMIC_FLAG_INIT 0
 #define ATOMIC_VAR_INIT(value) (value)
 #define atomic_init(obj, value) \
 do {                            \
    *(obj) = (value);           \
 } while(0)
 #define kill_dependency(y) ((void)0)
 #define atomic_thread_fence(order) \
    __machine_rw_barrier();
 #define atomic_signal_fence(order) \
    ((void)0)
 #define atomic_is_lock_free(obj) 0
 typedef intptr_t atomic_flag;
 typedef intptr_t atomic_bool;
 typedef intptr_t atomic_char;
 typedef intptr_t atomic_schar;
 typedef intptr_t atomic_uchar;
 typedef intptr_t atomic_short;
 typedef intptr_t atomic_ushort;
 typedef intptr_t atomic_int;
 typedef intptr_t atomic_uint;
 typedef intptr_t atomic_long;
 typedef intptr_t atomic_ulong;
 typedef intptr_t atomic_llong;
 typedef intptr_t atomic_ullong;
 typedef intptr_t atomic_wchar_t;
 typedef intptr_t atomic_int_least8_t;
 typedef intptr_t atomic_uint_least8_t;
 typedef intptr_t atomic_int_least16_t;
 typedef intptr_t atomic_uint_least16_t;
 typedef intptr_t atomic_int_least32_t;
 typedef intptr_t atomic_uint_least32_t;
 typedef intptr_t atomic_int_least64_t;
 typedef intptr_t atomic_uint_least64_t;
 typedef intptr_t atomic_int_fast8_t;
 typedef intptr_t atomic_uint_fast8_t;
 typedef intptr_t atomic_int_fast16_t;
 typedef intptr_t atomic_uint_fast16_t;
 typedef intptr_t atomic_int_fast32_t;
 typedef intptr_t atomic_uint_fast32_t;
 typedef intptr_t atomic_int_fast64_t;
 typedef intptr_t atomic_uint_fast64_t;
 typedef intptr_t atomic_intptr_t;
 typedef intptr_t atomic_uintptr_t;
 typedef intptr_t atomic_size_t;
 typedef intptr_t atomic_ptrdiff_t;
 typedef intptr_t atomic_intmax_t;
 typedef intptr_t atomic_uintmax_t;
 static inline void atomic_store(intptr_t *object, intptr_t desired)
 {
    *object = desired;
    __machine_rw_barrier();
 }
 #define atomic_store_explicit(object, desired, order) \
    atomic_store(object, desired)
 static inline intptr_t atomic_load(intptr_t *object)
 {
    __machine_rw_barrier();
    return *object;
 }
 #define atomic_load_explicit(object, order) \
    atomic_load(object)
 #define atomic_exchange(object, desired) \
    atomic_swap_ptr(object, desired)
 #define atomic_exchange_explicit(object, desired, order) \
    atomic_exchange(object, desired)
 static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected,
                                                 intptr_t desired)
 {
    intptr_t  old = *expected;
    *expected = (intptr_t)atomic_cas_ptr(object, (void *)old, (void *)desired);
    return *expected == old;
 }
 #define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak(object, expected, desired) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_weak(object, expected, desired)
 static inline intptr_t atomic_fetch_add(intptr_t *object, intptr_t operand)
 {
    return atomic_add_ptr_nv(object, operand) - operand;
 }
 #define atomic_fetch_sub(object, operand) \
    atomic_fetch_add(object, -(operand))
 static inline intptr_t atomic_fetch_or(intptr_t *object, intptr_t operand)
 {
    intptr_t old;
    do {
        old = atomic_load(object);
    } while (!atomic_compare_exchange_strong(object, old, old | operand));
    return old;
 }
 static inline intptr_t atomic_fetch_xor(intptr_t *object, intptr_t operand)
 {
    intptr_t old;
    do {
        old = atomic_load(object);
    } while (!atomic_compare_exchange_strong(object, old, old ^ operand));
    return old;
 }
 static inline intptr_t atomic_fetch_and(intptr_t *object, intptr_t operand)
 {
    intptr_t old;
    do {
        old = atomic_load(object);
    } while (!atomic_compare_exchange_strong(object, old, old & operand));
    return old;
 }
 #define atomic_fetch_add_explicit(object, operand, order) \
    atomic_fetch_add(object, operand)
 #define atomic_fetch_sub_explicit(object, operand, order) \
    atomic_fetch_sub(object, operand)
 #define atomic_fetch_or_explicit(object, operand, order) \
    atomic_fetch_or(object, operand)
 #define atomic_fetch_xor_explicit(object, operand, order) \
    atomic_fetch_xor(object, operand)
 #define atomic_fetch_and_explicit(object, operand, order) \
    atomic_fetch_and(object, operand)
 #define atomic_flag_test_and_set(object) \
    atomic_exchange(object, 1)
 #define atomic_flag_test_and_set_explicit(object, order) \
    atomic_flag_test_and_set(object)
 #define atomic_flag_clear(object) \
    atomic_store(object, 0)
 #define atomic_flag_clear_explicit(object, order) \
    atomic_flag_clear(object)
 #endif /* COMPAT_ATOMICS_SUNCC_STDATOMIC_H */
--- a/compat/atomics/win32/stdatomic.h
+++ b/compat/atomics/win32/stdatomic.h
@@ -1,181 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #ifndef COMPAT_ATOMICS_WIN32_STDATOMIC_H
 #define COMPAT_ATOMICS_WIN32_STDATOMIC_H
 #define WIN32_LEAN_AND_MEAN
 #include <stddef.h>
 #include <stdint.h>
 #include <windows.h>
 #define ATOMIC_FLAG_INIT 0
 #define ATOMIC_VAR_INIT(value) (value)
 #define atomic_init(obj, value) \
 do {                            \
    *(obj) = (value);           \
 } while(0)
 #define kill_dependency(y) ((void)0)
 #define atomic_thread_fence(order) \
    MemoryBarrier();
 #define atomic_signal_fence(order) \
    ((void)0)
 #define atomic_is_lock_free(obj) 0
 typedef intptr_t atomic_flag;
 typedef intptr_t atomic_bool;
 typedef intptr_t atomic_char;
 typedef intptr_t atomic_schar;
 typedef intptr_t atomic_uchar;
 typedef intptr_t atomic_short;
 typedef intptr_t atomic_ushort;
 typedef intptr_t atomic_int;
 typedef intptr_t atomic_uint;
 typedef intptr_t atomic_long;
 typedef intptr_t atomic_ulong;
 typedef intptr_t atomic_llong;
 typedef intptr_t atomic_ullong;
 typedef intptr_t atomic_wchar_t;
 typedef intptr_t atomic_int_least8_t;
 typedef intptr_t atomic_uint_least8_t;
 typedef intptr_t atomic_int_least16_t;
 typedef intptr_t atomic_uint_least16_t;
 typedef intptr_t atomic_int_least32_t;
 typedef intptr_t atomic_uint_least32_t;
 typedef intptr_t atomic_int_least64_t;
 typedef intptr_t atomic_uint_least64_t;
 typedef intptr_t atomic_int_fast8_t;
 typedef intptr_t atomic_uint_fast8_t;
 typedef intptr_t atomic_int_fast16_t;
 typedef intptr_t atomic_uint_fast16_t;
 typedef intptr_t atomic_int_fast32_t;
 typedef intptr_t atomic_uint_fast32_t;
 typedef intptr_t atomic_int_fast64_t;
 typedef intptr_t atomic_uint_fast64_t;
 typedef intptr_t atomic_intptr_t;
 typedef intptr_t atomic_uintptr_t;
 typedef intptr_t atomic_size_t;
 typedef intptr_t atomic_ptrdiff_t;
 typedef intptr_t atomic_intmax_t;
 typedef intptr_t atomic_uintmax_t;
 #define atomic_store(object, desired)   \
 do {                                    \
    *(object) = (desired);              \
    MemoryBarrier();                    \
 } while (0)
 #define atomic_store_explicit(object, desired, order) \
    atomic_store(object, desired)
 #define atomic_load(object) \
    (MemoryBarrier(), *(object))
 #define atomic_load_explicit(object, order) \
    atomic_load(object)
 #define atomic_exchange(object, desired) \
    InterlockedExchangePointer((PVOID volatile *)object, (PVOID)desired)
 #define atomic_exchange_explicit(object, desired, order) \
    atomic_exchange(object, desired)
 static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected,
                                                 intptr_t desired)
 {
    intptr_t old = *expected;
    *expected = (intptr_t)InterlockedCompareExchangePointer(
        (PVOID *)object, (PVOID)desired, (PVOID)old);
    return *expected == old;
 }
 #define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak(object, expected, desired) \
    atomic_compare_exchange_strong(object, expected, desired)
 #define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
    atomic_compare_exchange_weak(object, expected, desired)
 #ifdef _WIN64
 #define atomic_fetch_add(object, operand) \
    InterlockedExchangeAdd64(object, operand)
 #define atomic_fetch_sub(object, operand) \
    InterlockedExchangeAdd64(object, -(operand))
 #define atomic_fetch_or(object, operand) \
    InterlockedOr64(object, operand)
 #define atomic_fetch_xor(object, operand) \
    InterlockedXor64(object, operand)
 #define atomic_fetch_and(object, operand) \
    InterlockedAnd64(object, operand)
 #else
 #define atomic_fetch_add(object, operand) \
    InterlockedExchangeAdd(object, operand)
 #define atomic_fetch_sub(object, operand) \
    InterlockedExchangeAdd(object, -(operand))
 #define atomic_fetch_or(object, operand) \
    InterlockedOr(object, operand)
 #define atomic_fetch_xor(object, operand) \
    InterlockedXor(object, operand)
 #define atomic_fetch_and(object, operand) \
    InterlockedAnd(object, operand)
 #endif /* _WIN64 */
 #define atomic_fetch_add_explicit(object, operand, order) \
    atomic_fetch_add(object, operand)
 #define atomic_fetch_sub_explicit(object, operand, order) \
    atomic_fetch_sub(object, operand)
 #define atomic_fetch_or_explicit(object, operand, order) \
    atomic_fetch_or(object, operand)
 #define atomic_fetch_xor_explicit(object, operand, order) \
    atomic_fetch_xor(object, operand)
 #define atomic_fetch_and_explicit(object, operand, order) \
    atomic_fetch_and(object, operand)
 #define atomic_flag_test_and_set(object) \
    atomic_exchange(object, 1)
 #define atomic_flag_test_and_set_explicit(object, order) \
    atomic_flag_test_and_set(object)
 #define atomic_flag_clear(object) \
    atomic_store(object, 0)
 #define atomic_flag_clear_explicit(object, order) \
    atomic_flag_clear(object)
 #endif /* COMPAT_ATOMICS_WIN32_STDATOMIC_H */
--- a/compat/avisynth/avisynth_c.h
+++ b/compat/avisynth/avisynth_c.h
@@ -0,0 +1,882 @@
 // Avisynth C Interface Version 0.20
 // Copyright 2003 Kevin Atkinson
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation; either version 2 of the License, or
 // (at your option) any later version.
 //
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 // MA 02110-1301 USA, or visit
 // http://www.gnu.org/copyleft/gpl.html .
 //
 // As a special exception, I give you permission to link to the
 // Avisynth C interface with independent modules that communicate with
 // the Avisynth C interface solely through the interfaces defined in
 // avisynth_c.h, regardless of the license terms of these independent
 // modules, and to copy and distribute the resulting combined work
 // under terms of your choice, provided that every copy of the
 // combined work is accompanied by a complete copy of the source code
 // of the Avisynth C interface and Avisynth itself (with the version
 // used to produce the combined work), being distributed under the
 // terms of the GNU General Public License plus this exception.  An
 // independent module is a module which is not derived from or based
 // on Avisynth C Interface, such as 3rd-party filters, import and
 // export plugins, or graphical user interfaces.
 // NOTE: this is a partial update of the Avisynth C interface to recognize
 // new color spaces added in Avisynth 2.60. By no means is this document
 // completely Avisynth 2.60 compliant.
 #ifndef __AVISYNTH_C__
 #define __AVISYNTH_C__
 #include "avs/config.h"
 #include "avs/capi.h"
 #include "avs/types.h"
 /////////////////////////////////////////////////////////////////////
 //
 // Constants
 //
 #ifndef __AVISYNTH_6_H__
 enum { AVISYNTH_INTERFACE_VERSION = 6 };
 #endif
 enum {AVS_SAMPLE_INT8  = 1<<0,
      AVS_SAMPLE_INT16 = 1<<1,
      AVS_SAMPLE_INT24 = 1<<2,
      AVS_SAMPLE_INT32 = 1<<3,
      AVS_SAMPLE_FLOAT = 1<<4};
 enum {AVS_PLANAR_Y=1<<0,
      AVS_PLANAR_U=1<<1,
      AVS_PLANAR_V=1<<2,
      AVS_PLANAR_ALIGNED=1<<3,
      AVS_PLANAR_Y_ALIGNED=AVS_PLANAR_Y|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_U_ALIGNED=AVS_PLANAR_U|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_V_ALIGNED=AVS_PLANAR_V|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_A=1<<4,
      AVS_PLANAR_R=1<<5,
      AVS_PLANAR_G=1<<6,
      AVS_PLANAR_B=1<<7,
      AVS_PLANAR_A_ALIGNED=AVS_PLANAR_A|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_R_ALIGNED=AVS_PLANAR_R|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_G_ALIGNED=AVS_PLANAR_G|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_B_ALIGNED=AVS_PLANAR_B|AVS_PLANAR_ALIGNED};
  // Colorspace properties.
 enum {AVS_CS_BGR = 1<<28,
      AVS_CS_YUV = 1<<29,
      AVS_CS_INTERLEAVED = 1<<30,
      AVS_CS_PLANAR = 1<<31,
      AVS_CS_SHIFT_SUB_WIDTH   = 0,
      AVS_CS_SHIFT_SUB_HEIGHT  = 8,
      AVS_CS_SHIFT_SAMPLE_BITS = 16,
      AVS_CS_SUB_WIDTH_MASK    = 7 << AVS_CS_SHIFT_SUB_WIDTH,
      AVS_CS_SUB_WIDTH_1       = 3 << AVS_CS_SHIFT_SUB_WIDTH, // YV24
      AVS_CS_SUB_WIDTH_2       = 0 << AVS_CS_SHIFT_SUB_WIDTH, // YV12, I420, YV16
      AVS_CS_SUB_WIDTH_4       = 1 << AVS_CS_SHIFT_SUB_WIDTH, // YUV9, YV411
      AVS_CS_VPLANEFIRST       = 1 << 3, // YV12, YV16, YV24, YV411, YUV9
      AVS_CS_UPLANEFIRST       = 1 << 4, // I420
      AVS_CS_SUB_HEIGHT_MASK   = 7 << AVS_CS_SHIFT_SUB_HEIGHT,
      AVS_CS_SUB_HEIGHT_1      = 3 << AVS_CS_SHIFT_SUB_HEIGHT, // YV16, YV24, YV411
      AVS_CS_SUB_HEIGHT_2      = 0 << AVS_CS_SHIFT_SUB_HEIGHT, // YV12, I420
      AVS_CS_SUB_HEIGHT_4      = 1 << AVS_CS_SHIFT_SUB_HEIGHT, // YUV9
      AVS_CS_SAMPLE_BITS_MASK  = 7 << AVS_CS_SHIFT_SAMPLE_BITS,
      AVS_CS_SAMPLE_BITS_8     = 0 << AVS_CS_SHIFT_SAMPLE_BITS,
      AVS_CS_SAMPLE_BITS_16    = 1 << AVS_CS_SHIFT_SAMPLE_BITS,
      AVS_CS_SAMPLE_BITS_32    = 2 << AVS_CS_SHIFT_SAMPLE_BITS,
      AVS_CS_PLANAR_MASK       = AVS_CS_PLANAR | AVS_CS_INTERLEAVED | AVS_CS_YUV | AVS_CS_BGR | AVS_CS_SAMPLE_BITS_MASK | AVS_CS_SUB_HEIGHT_MASK | AVS_CS_SUB_WIDTH_MASK,
      AVS_CS_PLANAR_FILTER     = ~( AVS_CS_VPLANEFIRST | AVS_CS_UPLANEFIRST )};
  // Specific colorformats
 enum {
  AVS_CS_UNKNOWN = 0,
  AVS_CS_BGR24 = 1<<0 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  AVS_CS_BGR32 = 1<<1 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  AVS_CS_YUY2 = 1<<2 | AVS_CS_YUV | AVS_CS_INTERLEAVED,
  //  AVS_CS_YV12  = 1<<3  Reserved
  //  AVS_CS_I420  = 1<<4  Reserved
  AVS_CS_RAW32 = 1<<5 | AVS_CS_INTERLEAVED,
  AVS_CS_YV24  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_1,  // YVU 4:4:4 planar
  AVS_CS_YV16  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_2,  // YVU 4:2:2 planar
  AVS_CS_YV12  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_2 | AVS_CS_SUB_WIDTH_2,  // YVU 4:2:0 planar
  AVS_CS_I420  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_UPLANEFIRST | AVS_CS_SUB_HEIGHT_2 | AVS_CS_SUB_WIDTH_2,  // YUV 4:2:0 planar
  AVS_CS_IYUV  = AVS_CS_I420,
  AVS_CS_YV411 = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_4,  // YVU 4:1:1 planar
  AVS_CS_YUV9  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_4 | AVS_CS_SUB_WIDTH_4,  // YVU 4:1:0 planar
  AVS_CS_Y8    = AVS_CS_PLANAR | AVS_CS_INTERLEAVED | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8                                              // Y   4:0:0 planar
 };
 enum {
  AVS_IT_BFF = 1<<0,
  AVS_IT_TFF = 1<<1,
  AVS_IT_FIELDBASED = 1<<2};
 enum {
  AVS_FILTER_TYPE=1,
  AVS_FILTER_INPUT_COLORSPACE=2,
  AVS_FILTER_OUTPUT_TYPE=9,
  AVS_FILTER_NAME=4,
  AVS_FILTER_AUTHOR=5,
  AVS_FILTER_VERSION=6,
  AVS_FILTER_ARGS=7,
  AVS_FILTER_ARGS_INFO=8,
  AVS_FILTER_ARGS_DESCRIPTION=10,
  AVS_FILTER_DESCRIPTION=11};
 enum {  //SUBTYPES
  AVS_FILTER_TYPE_AUDIO=1,
  AVS_FILTER_TYPE_VIDEO=2,
  AVS_FILTER_OUTPUT_TYPE_SAME=3,
  AVS_FILTER_OUTPUT_TYPE_DIFFERENT=4};
 enum {
  // New 2.6 explicitly defined cache hints.
  AVS_CACHE_NOTHING=10, // Do not cache video.
  AVS_CACHE_WINDOW=11, // Hard protect upto X frames within a range of X from the current frame N.
  AVS_CACHE_GENERIC=12, // LRU cache upto X frames.
  AVS_CACHE_FORCE_GENERIC=13, // LRU cache upto X frames, override any previous CACHE_WINDOW.
  AVS_CACHE_GET_POLICY=30, // Get the current policy.
  AVS_CACHE_GET_WINDOW=31, // Get the current window h_span.
  AVS_CACHE_GET_RANGE=32, // Get the current generic frame range.
  AVS_CACHE_AUDIO=50, // Explicitly do cache audio, X byte cache.
  AVS_CACHE_AUDIO_NOTHING=51, // Explicitly do not cache audio.
  AVS_CACHE_AUDIO_NONE=52, // Audio cache off (auto mode), X byte intial cache.
  AVS_CACHE_AUDIO_AUTO=53, // Audio cache on (auto mode), X byte intial cache.
  AVS_CACHE_GET_AUDIO_POLICY=70, // Get the current audio policy.
  AVS_CACHE_GET_AUDIO_SIZE=71, // Get the current audio cache size.
  AVS_CACHE_PREFETCH_FRAME=100, // Queue request to prefetch frame N.
  AVS_CACHE_PREFETCH_GO=101, // Action video prefetches.
  AVS_CACHE_PREFETCH_AUDIO_BEGIN=120, // Begin queue request transaction to prefetch audio (take critical section).
  AVS_CACHE_PREFETCH_AUDIO_STARTLO=121, // Set low 32 bits of start.
  AVS_CACHE_PREFETCH_AUDIO_STARTHI=122, // Set high 32 bits of start.
  AVS_CACHE_PREFETCH_AUDIO_COUNT=123, // Set low 32 bits of length.
  AVS_CACHE_PREFETCH_AUDIO_COMMIT=124, // Enqueue request transaction to prefetch audio (release critical section).
  AVS_CACHE_PREFETCH_AUDIO_GO=125, // Action audio prefetches.
  AVS_CACHE_GETCHILD_CACHE_MODE=200, // Cache ask Child for desired video cache mode.
  AVS_CACHE_GETCHILD_CACHE_SIZE=201, // Cache ask Child for desired video cache size.
  AVS_CACHE_GETCHILD_AUDIO_MODE=202, // Cache ask Child for desired audio cache mode.
  AVS_CACHE_GETCHILD_AUDIO_SIZE=203, // Cache ask Child for desired audio cache size.
  AVS_CACHE_GETCHILD_COST=220, // Cache ask Child for estimated processing cost.
    AVS_CACHE_COST_ZERO=221, // Child response of zero cost (ptr arithmetic only).
    AVS_CACHE_COST_UNIT=222, // Child response of unit cost (less than or equal 1 full frame blit).
    AVS_CACHE_COST_LOW=223, // Child response of light cost. (Fast)
    AVS_CACHE_COST_MED=224, // Child response of medium cost. (Real time)
    AVS_CACHE_COST_HI=225, // Child response of heavy cost. (Slow)
  AVS_CACHE_GETCHILD_THREAD_MODE=240, // Cache ask Child for thread safetyness.
    AVS_CACHE_THREAD_UNSAFE=241, // Only 1 thread allowed for all instances. 2.5 filters default!
    AVS_CACHE_THREAD_CLASS=242, // Only 1 thread allowed for each instance. 2.6 filters default!
    AVS_CACHE_THREAD_SAFE=243, //  Allow all threads in any instance.
    AVS_CACHE_THREAD_OWN=244, // Safe but limit to 1 thread, internally threaded.
  AVS_CACHE_GETCHILD_ACCESS_COST=260, // Cache ask Child for preferred access pattern.
    AVS_CACHE_ACCESS_RAND=261, // Filter is access order agnostic.
    AVS_CACHE_ACCESS_SEQ0=262, // Filter prefers sequential access (low cost)
    AVS_CACHE_ACCESS_SEQ1=263, // Filter needs sequential access (high cost)
  };
 #ifdef BUILDING_AVSCORE
 struct AVS_ScriptEnvironment {
        IScriptEnvironment * env;
        const char * error;
        AVS_ScriptEnvironment(IScriptEnvironment * e = 0)
                : env(e), error(0) {}
 };
 #endif
 typedef struct AVS_Clip AVS_Clip;
 typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_VideoInfo
 //
 // AVS_VideoInfo is layed out identicly to VideoInfo
 typedef struct AVS_VideoInfo {
  int width, height;    // width=0 means no video
  unsigned fps_numerator, fps_denominator;
  int num_frames;
  int pixel_type;
  int audio_samples_per_second;   // 0 means no audio
  int sample_type;
  INT64 num_audio_samples;
  int nchannels;
  // Imagetype properties
  int image_type;
 } AVS_VideoInfo;
 // useful functions of the above
 AVSC_INLINE int avs_has_video(const AVS_VideoInfo * p)
        { return (p->width!=0); }
 AVSC_INLINE int avs_has_audio(const AVS_VideoInfo * p)
        { return (p->audio_samples_per_second!=0); }
 AVSC_INLINE int avs_is_rgb(const AVS_VideoInfo * p)
        { return !!(p->pixel_type&AVS_CS_BGR); }
 AVSC_INLINE int avs_is_rgb24(const AVS_VideoInfo * p)
        { return (p->pixel_type&AVS_CS_BGR24)==AVS_CS_BGR24; } // Clear out additional properties
 AVSC_INLINE int avs_is_rgb32(const AVS_VideoInfo * p)
        { return (p->pixel_type & AVS_CS_BGR32) == AVS_CS_BGR32 ; }
 AVSC_INLINE int avs_is_yuv(const AVS_VideoInfo * p)
        { return !!(p->pixel_type&AVS_CS_YUV ); }
 AVSC_INLINE int avs_is_yuy2(const AVS_VideoInfo * p)
        { return (p->pixel_type & AVS_CS_YUY2) == AVS_CS_YUY2; }
 AVSC_API(int, avs_is_yv24)(const AVS_VideoInfo * p);
 AVSC_API(int, avs_is_yv16)(const AVS_VideoInfo * p);
 AVSC_API(int, avs_is_yv12)(const AVS_VideoInfo * p) ;
 AVSC_API(int, avs_is_yv411)(const AVS_VideoInfo * p);
 AVSC_API(int, avs_is_y8)(const AVS_VideoInfo * p);
 AVSC_INLINE int avs_is_property(const AVS_VideoInfo * p, int property)
        { return ((p->image_type & property)==property ); }
 AVSC_INLINE int avs_is_planar(const AVS_VideoInfo * p)
        { return !!(p->pixel_type & AVS_CS_PLANAR); }
 AVSC_API(int, avs_is_color_space)(const AVS_VideoInfo * p, int c_space);
 AVSC_INLINE int avs_is_field_based(const AVS_VideoInfo * p)
        { return !!(p->image_type & AVS_IT_FIELDBASED); }
 AVSC_INLINE int avs_is_parity_known(const AVS_VideoInfo * p)
        { return ((p->image_type & AVS_IT_FIELDBASED)&&(p->image_type & (AVS_IT_BFF | AVS_IT_TFF))); }
 AVSC_INLINE int avs_is_bff(const AVS_VideoInfo * p)
        { return !!(p->image_type & AVS_IT_BFF); }
 AVSC_INLINE int avs_is_tff(const AVS_VideoInfo * p)
        { return !!(p->image_type & AVS_IT_TFF); }
 AVSC_API(int, avs_get_plane_width_subsampling)(const AVS_VideoInfo * p, int plane);
 AVSC_API(int, avs_get_plane_height_subsampling)(const AVS_VideoInfo * p, int plane);
 AVSC_API(int, avs_bits_per_pixel)(const AVS_VideoInfo * p);
 AVSC_API(int, avs_bytes_from_pixels)(const AVS_VideoInfo * p, int pixels);
 AVSC_API(int, avs_row_size)(const AVS_VideoInfo * p, int plane);
 AVSC_API(int, avs_bmp_size)(const AVS_VideoInfo * vi);
 AVSC_INLINE int avs_samples_per_second(const AVS_VideoInfo * p)
        { return p->audio_samples_per_second; }
 AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p)
 {
    switch (p->sample_type) {
      case AVS_SAMPLE_INT8:  return sizeof(signed char);
      case AVS_SAMPLE_INT16: return sizeof(signed short);
      case AVS_SAMPLE_INT24: return 3;
      case AVS_SAMPLE_INT32: return sizeof(signed int);
      case AVS_SAMPLE_FLOAT: return sizeof(float);
      default: return 0;
    }
 }
 AVSC_INLINE int avs_bytes_per_audio_sample(const AVS_VideoInfo * p)
        { return p->nchannels*avs_bytes_per_channel_sample(p);}
 AVSC_INLINE INT64 avs_audio_samples_from_frames(const AVS_VideoInfo * p, INT64 frames)
        { return ((INT64)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
 AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
        { return (int)(samples * (INT64)p->fps_numerator / (INT64)p->fps_denominator / (INT64)p->audio_samples_per_second); }
 AVSC_INLINE INT64 avs_audio_samples_from_bytes(const AVS_VideoInfo * p, INT64 bytes)
        { return bytes / avs_bytes_per_audio_sample(p); }
 AVSC_INLINE INT64 avs_bytes_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
        { return samples * avs_bytes_per_audio_sample(p); }
 AVSC_INLINE int avs_audio_channels(const AVS_VideoInfo * p)
        { return p->nchannels; }
 AVSC_INLINE int avs_sample_type(const AVS_VideoInfo * p)
        { return p->sample_type;}
 // useful mutator
 AVSC_INLINE void avs_set_property(AVS_VideoInfo * p, int property)
        { p->image_type|=property; }
 AVSC_INLINE void avs_clear_property(AVS_VideoInfo * p, int property)
        { p->image_type&=~property; }
 AVSC_INLINE void avs_set_field_based(AVS_VideoInfo * p, int isfieldbased)
        { if (isfieldbased) p->image_type|=AVS_IT_FIELDBASED; else p->image_type&=~AVS_IT_FIELDBASED; }
 AVSC_INLINE void avs_set_fps(AVS_VideoInfo * p, unsigned numerator, unsigned denominator)
 {
    unsigned x=numerator, y=denominator;
    while (y) {   // find gcd
      unsigned t = x%y; x = y; y = t;
    }
    p->fps_numerator = numerator/x;
    p->fps_denominator = denominator/x;
 }
 #ifdef AVS_IMPLICIT_FUNCTION_DECLARATION_ERROR
 AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
 {
        return (x->pixel_type == y->pixel_type)
                || (avs_is_yv12(x) && avs_is_yv12(y));
 }
 #endif
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_VideoFrame
 //
 // VideoFrameBuffer holds information about a memory block which is used
 // for video data.  For efficiency, instances of this class are not deleted
 // when the refcount reaches zero; instead they're stored in a linked list
 // to be reused.  The instances are deleted when the corresponding AVS
 // file is closed.
 // AVS_VideoFrameBuffer is layed out identicly to VideoFrameBuffer
 // DO NOT USE THIS STRUCTURE DIRECTLY
 typedef struct AVS_VideoFrameBuffer {
  BYTE * data;
  int data_size;
  // sequence_number is incremented every time the buffer is changed, so
  // that stale views can tell they're no longer valid.
  volatile long sequence_number;
  volatile long refcount;
 } AVS_VideoFrameBuffer;
 // VideoFrame holds a "window" into a VideoFrameBuffer.
 // AVS_VideoFrame is layed out identicly to IVideoFrame
 // DO NOT USE THIS STRUCTURE DIRECTLY
 typedef struct AVS_VideoFrame {
  volatile long refcount;
  AVS_VideoFrameBuffer * vfb;
  int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
  int row_sizeUV, heightUV;
 } AVS_VideoFrame;
 // Access functions for AVS_VideoFrame
 AVSC_API(int, avs_get_pitch_p)(const AVS_VideoFrame * p, int plane);
 #ifdef AVS_IMPLICIT_FUNCTION_DECLARATION_ERROR
 AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p) {
        return avs_get_pitch_p(p, 0);}
 #endif
 AVSC_API(int, avs_get_row_size_p)(const AVS_VideoFrame * p, int plane);
 AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p) {
        return p->row_size; }
 AVSC_API(int, avs_get_height_p)(const AVS_VideoFrame * p, int plane);
 AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p) {
        return p->height;}
 AVSC_API(const BYTE *, avs_get_read_ptr_p)(const AVS_VideoFrame * p, int plane);
 #ifdef AVS_IMPLICIT_FUNCTION_DECLARATION_ERROR
 AVSC_INLINE const BYTE* avs_get_read_ptr(const AVS_VideoFrame * p) {
        return avs_get_read_ptr_p(p, 0);}
 #endif
 AVSC_API(int, avs_is_writable)(const AVS_VideoFrame * p);
 AVSC_API(BYTE *, avs_get_write_ptr_p)(const AVS_VideoFrame * p, int plane);
 #ifdef AVS_IMPLICIT_FUNCTION_DECLARATION_ERROR
 AVSC_INLINE BYTE* avs_get_write_ptr(const AVS_VideoFrame * p) {
        return avs_get_write_ptr_p(p, 0);}
 #endif
 AVSC_API(void, avs_release_video_frame)(AVS_VideoFrame *);
 // makes a shallow copy of a video frame
 AVSC_API(AVS_VideoFrame *, avs_copy_video_frame)(AVS_VideoFrame *);
 #ifndef AVSC_NO_DECLSPEC
 AVSC_INLINE void avs_release_frame(AVS_VideoFrame * f)
  {avs_release_video_frame(f);}
 AVSC_INLINE AVS_VideoFrame * avs_copy_frame(AVS_VideoFrame * f)
  {return avs_copy_video_frame(f);}
 #endif
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_Value
 //
 // Treat AVS_Value as a fat pointer.  That is use avs_copy_value
 // and avs_release_value appropiaty as you would if AVS_Value was
 // a pointer.
 // To maintain source code compatibility with future versions of the
 // avisynth_c API don't use the AVS_Value directly.  Use the helper
 // functions below.
 // AVS_Value is layed out identicly to AVSValue
 typedef struct AVS_Value AVS_Value;
 struct AVS_Value {
  short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong
               // for some function e'rror
  short array_size;
  union {
    void * clip; // do not use directly, use avs_take_clip
    char boolean;
    int integer;
    float floating_pt;
    const char * string;
    const AVS_Value * array;
  } d;
 };
 // AVS_Value should be initilized with avs_void.
 // Should also set to avs_void after the value is released
 // with avs_copy_value.  Consider it the equalvent of setting
 // a pointer to NULL
 static const AVS_Value avs_void = {'v'};
 AVSC_API(void, avs_copy_value)(AVS_Value * dest, AVS_Value src);
 AVSC_API(void, avs_release_value)(AVS_Value);
 AVSC_INLINE int avs_defined(AVS_Value v) { return v.type != 'v'; }
 AVSC_INLINE int avs_is_clip(AVS_Value v) { return v.type == 'c'; }
 AVSC_INLINE int avs_is_bool(AVS_Value v) { return v.type == 'b'; }
 AVSC_INLINE int avs_is_int(AVS_Value v) { return v.type == 'i'; }
 AVSC_INLINE int avs_is_float(AVS_Value v) { return v.type == 'f' || v.type == 'i'; }
 AVSC_INLINE int avs_is_string(AVS_Value v) { return v.type == 's'; }
 AVSC_INLINE int avs_is_array(AVS_Value v) { return v.type == 'a'; }
 AVSC_INLINE int avs_is_error(AVS_Value v) { return v.type == 'e'; }
 AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
 AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
 AVSC_INLINE int avs_as_bool(AVS_Value v)
        { return v.d.boolean; }
 AVSC_INLINE int avs_as_int(AVS_Value v)
        { return v.d.integer; }
 AVSC_INLINE const char * avs_as_string(AVS_Value v)
        { return avs_is_error(v) || avs_is_string(v) ? v.d.string : 0; }
 AVSC_INLINE double avs_as_float(AVS_Value v)
        { return avs_is_int(v) ? v.d.integer : v.d.floating_pt; }
 AVSC_INLINE const char * avs_as_error(AVS_Value v)
        { return avs_is_error(v) ? v.d.string : 0; }
 AVSC_INLINE const AVS_Value * avs_as_array(AVS_Value v)
        { return v.d.array; }
 AVSC_INLINE int avs_array_size(AVS_Value v)
        { return avs_is_array(v) ? v.array_size : 1; }
 AVSC_INLINE AVS_Value avs_array_elt(AVS_Value v, int index)
        { return avs_is_array(v) ? v.d.array[index] : v; }
 // only use these functions on an AVS_Value that does not already have
 // an active value.  Remember, treat AVS_Value as a fat pointer.
 AVSC_INLINE AVS_Value avs_new_value_bool(int v0)
        { AVS_Value v; v.type = 'b'; v.d.boolean = v0 == 0 ? 0 : 1; return v; }
 AVSC_INLINE AVS_Value avs_new_value_int(int v0)
        { AVS_Value v; v.type = 'i'; v.d.integer = v0; return v; }
 AVSC_INLINE AVS_Value avs_new_value_string(const char * v0)
        { AVS_Value v; v.type = 's'; v.d.string = v0; return v; }
 AVSC_INLINE AVS_Value avs_new_value_float(float v0)
        { AVS_Value v; v.type = 'f'; v.d.floating_pt = v0; return v;}
 AVSC_INLINE AVS_Value avs_new_value_error(const char * v0)
        { AVS_Value v; v.type = 'e'; v.d.string = v0; return v; }
 #ifndef AVSC_NO_DECLSPEC
 AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
        { AVS_Value v; avs_set_to_clip(&v, v0); return v; }
 #endif
 AVSC_INLINE AVS_Value avs_new_value_array(AVS_Value * v0, int size)
        { AVS_Value v; v.type = 'a'; v.d.array = v0; v.array_size = size; return v; }
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_Clip
 //
 AVSC_API(void, avs_release_clip)(AVS_Clip *);
 AVSC_API(AVS_Clip *, avs_copy_clip)(AVS_Clip *);
 AVSC_API(const char *, avs_clip_get_error)(AVS_Clip *); // return 0 if no error
 AVSC_API(const AVS_VideoInfo *, avs_get_video_info)(AVS_Clip *);
 AVSC_API(int, avs_get_version)(AVS_Clip *);
 AVSC_API(AVS_VideoFrame *, avs_get_frame)(AVS_Clip *, int n);
 // The returned video frame must be released with avs_release_video_frame
 AVSC_API(int, avs_get_parity)(AVS_Clip *, int n);
 // return field parity if field_based, else parity of first field in frame
 AVSC_API(int, avs_get_audio)(AVS_Clip *, void * buf,
                             INT64 start, INT64 count);
 // start and count are in samples
 AVSC_API(int, avs_set_cache_hints)(AVS_Clip *,
                                   int cachehints, int frame_range);
 // This is the callback type used by avs_add_function
 typedef AVS_Value (AVSC_CC * AVS_ApplyFunc)
                        (AVS_ScriptEnvironment *, AVS_Value args, void * user_data);
 typedef struct AVS_FilterInfo AVS_FilterInfo;
 struct AVS_FilterInfo
 {
  // these members should not be modified outside of the AVS_ApplyFunc callback
  AVS_Clip * child;
  AVS_VideoInfo vi;
  AVS_ScriptEnvironment * env;
  AVS_VideoFrame * (AVSC_CC * get_frame)(AVS_FilterInfo *, int n);
  int (AVSC_CC * get_parity)(AVS_FilterInfo *, int n);
  int (AVSC_CC * get_audio)(AVS_FilterInfo *, void * buf,
                                  INT64 start, INT64 count);
  int (AVSC_CC * set_cache_hints)(AVS_FilterInfo *, int cachehints,
                                        int frame_range);
  void (AVSC_CC * free_filter)(AVS_FilterInfo *);
  // Should be set when ever there is an error to report.
  // It is cleared before any of the above methods are called
  const char * error;
  // this is to store whatever and may be modified at will
  void * user_data;
 };
 // Create a new filter
 // fi is set to point to the AVS_FilterInfo so that you can
 //   modify it once it is initilized.
 // store_child should generally be set to true.  If it is not
 //    set than ALL methods (the function pointers) must be defined
 // If it is set than you do not need to worry about freeing the child
 //    clip.
 AVSC_API(AVS_Clip *, avs_new_c_filter)(AVS_ScriptEnvironment * e,
                                       AVS_FilterInfo * * fi,
                                       AVS_Value child, int store_child);
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_ScriptEnvironment
 //
 // For GetCPUFlags.  These are backwards-compatible with those in VirtualDub.
 enum {
                                /* slowest CPU to support extension */
  AVS_CPU_FORCE        = 0x01,   // N/A
  AVS_CPU_FPU          = 0x02,   // 386/486DX
  AVS_CPU_MMX          = 0x04,   // P55C, K6, PII
  AVS_CPU_INTEGER_SSE  = 0x08,   // PIII, Athlon
  AVS_CPU_SSE          = 0x10,   // PIII, Athlon XP/MP
  AVS_CPU_SSE2         = 0x20,   // PIV, Hammer
  AVS_CPU_3DNOW        = 0x40,   // K6-2
  AVS_CPU_3DNOW_EXT    = 0x80,   // Athlon
  AVS_CPU_X86_64       = 0xA0,   // Hammer (note: equiv. to 3DNow + SSE2,
                                 // which only Hammer will have anyway)
  AVS_CPUF_SSE3       = 0x100,   //  PIV+, K8 Venice
  AVS_CPUF_SSSE3      = 0x200,   //  Core 2
  AVS_CPUF_SSE4       = 0x400,   //  Penryn, Wolfdale, Yorkfield
  AVS_CPUF_SSE4_1     = 0x400,
 //AVS_CPUF_AVX        = 0x800,   //  Sandy Bridge, Bulldozer
  AVS_CPUF_SSE4_2    = 0x1000,   //  Nehalem
 //AVS_CPUF_AVX2      = 0x2000,   //  Haswell
 //AVS_CPUF_AVX512    = 0x4000,   //  Knights Landing
 };
 AVSC_API(const char *, avs_get_error)(AVS_ScriptEnvironment *); // return 0 if no error
 AVSC_API(int, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
 AVSC_API(int, avs_check_version)(AVS_ScriptEnvironment *, int version);
 AVSC_API(char *, avs_save_string)(AVS_ScriptEnvironment *, const char* s, int length);
 AVSC_API(char *, avs_sprintf)(AVS_ScriptEnvironment *, const char * fmt, ...);
 AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, void* val);
 // note: val is really a va_list; I hope everyone typedefs va_list to a pointer
 AVSC_API(int, avs_add_function)(AVS_ScriptEnvironment *,
                                const char * name, const char * params,
                                AVS_ApplyFunc apply, void * user_data);
 AVSC_API(int, avs_function_exists)(AVS_ScriptEnvironment *, const char * name);
 AVSC_API(AVS_Value, avs_invoke)(AVS_ScriptEnvironment *, const char * name,
                               AVS_Value args, const char** arg_names);
 // The returned value must be be released with avs_release_value
 AVSC_API(AVS_Value, avs_get_var)(AVS_ScriptEnvironment *, const char* name);
 // The returned value must be be released with avs_release_value
 AVSC_API(int, avs_set_var)(AVS_ScriptEnvironment *, const char* name, AVS_Value val);
 AVSC_API(int, avs_set_global_var)(AVS_ScriptEnvironment *, const char* name, const AVS_Value val);
 //void avs_push_context(AVS_ScriptEnvironment *, int level=0);
 //void avs_pop_context(AVS_ScriptEnvironment *);
 AVSC_API(AVS_VideoFrame *, avs_new_video_frame_a)(AVS_ScriptEnvironment *,
                                          const AVS_VideoInfo * vi, int align);
 // align should be at least 16
 #ifndef AVSC_NO_DECLSPEC
 AVSC_INLINE
 AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env,
                                     const AVS_VideoInfo * vi)
  {return avs_new_video_frame_a(env,vi,FRAME_ALIGN);}
 AVSC_INLINE
 AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env,
                               const AVS_VideoInfo * vi)
  {return avs_new_video_frame_a(env,vi,FRAME_ALIGN);}
 #endif
 AVSC_API(int, avs_make_writable)(AVS_ScriptEnvironment *, AVS_VideoFrame * * pvf);
 AVSC_API(void, avs_bit_blt)(AVS_ScriptEnvironment *, BYTE* dstp, int dst_pitch, const BYTE* srcp, int src_pitch, int row_size, int height);
 typedef void (AVSC_CC *AVS_ShutdownFunc)(void* user_data, AVS_ScriptEnvironment * env);
 AVSC_API(void, avs_at_exit)(AVS_ScriptEnvironment *, AVS_ShutdownFunc function, void * user_data);
 AVSC_API(AVS_VideoFrame *, avs_subframe)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height);
 // The returned video frame must be be released
 AVSC_API(int, avs_set_memory_max)(AVS_ScriptEnvironment *, int mem);
 AVSC_API(int, avs_set_working_dir)(AVS_ScriptEnvironment *, const char * newdir);
 // avisynth.dll exports this; it's a way to use it as a library, without
 // writing an AVS script or without going through AVIFile.
 AVSC_API(AVS_ScriptEnvironment *, avs_create_script_environment)(int version);
 // this symbol is the entry point for the plugin and must
 // be defined
 AVSC_EXPORT
 const char * AVSC_CC avisynth_c_plugin_init(AVS_ScriptEnvironment* env);
 AVSC_API(void, avs_delete_script_environment)(AVS_ScriptEnvironment *);
 AVSC_API(AVS_VideoFrame *, avs_subframe_planar)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height, int rel_offsetU, int rel_offsetV, int new_pitchUV);
 // The returned video frame must be be released
 #ifdef AVSC_NO_DECLSPEC
 // use LoadLibrary and related functions to dynamically load Avisynth instead of declspec(dllimport)
 /*
  The following functions needs to have been declared, probably from windows.h
  void* malloc(size_t)
  void free(void*);
  HMODULE LoadLibrary(const char*);
  void* GetProcAddress(HMODULE, const char*);
  FreeLibrary(HMODULE);
 */
 typedef struct AVS_Library AVS_Library;
 #define AVSC_DECLARE_FUNC(name) name##_func name
 struct AVS_Library {
  HMODULE handle;
  AVSC_DECLARE_FUNC(avs_add_function);
  AVSC_DECLARE_FUNC(avs_at_exit);
  AVSC_DECLARE_FUNC(avs_bit_blt);
  AVSC_DECLARE_FUNC(avs_check_version);
  AVSC_DECLARE_FUNC(avs_clip_get_error);
  AVSC_DECLARE_FUNC(avs_copy_clip);
  AVSC_DECLARE_FUNC(avs_copy_value);
  AVSC_DECLARE_FUNC(avs_copy_video_frame);
  AVSC_DECLARE_FUNC(avs_create_script_environment);
  AVSC_DECLARE_FUNC(avs_delete_script_environment);
  AVSC_DECLARE_FUNC(avs_function_exists);
  AVSC_DECLARE_FUNC(avs_get_audio);
  AVSC_DECLARE_FUNC(avs_get_cpu_flags);
  AVSC_DECLARE_FUNC(avs_get_frame);
  AVSC_DECLARE_FUNC(avs_get_parity);
  AVSC_DECLARE_FUNC(avs_get_var);
  AVSC_DECLARE_FUNC(avs_get_version);
  AVSC_DECLARE_FUNC(avs_get_video_info);
  AVSC_DECLARE_FUNC(avs_invoke);
  AVSC_DECLARE_FUNC(avs_make_writable);
  AVSC_DECLARE_FUNC(avs_new_c_filter);
  AVSC_DECLARE_FUNC(avs_new_video_frame_a);
  AVSC_DECLARE_FUNC(avs_release_clip);
  AVSC_DECLARE_FUNC(avs_release_value);
  AVSC_DECLARE_FUNC(avs_release_video_frame);
  AVSC_DECLARE_FUNC(avs_save_string);
  AVSC_DECLARE_FUNC(avs_set_cache_hints);
  AVSC_DECLARE_FUNC(avs_set_global_var);
  AVSC_DECLARE_FUNC(avs_set_memory_max);
  AVSC_DECLARE_FUNC(avs_set_to_clip);
  AVSC_DECLARE_FUNC(avs_set_var);
  AVSC_DECLARE_FUNC(avs_set_working_dir);
  AVSC_DECLARE_FUNC(avs_sprintf);
  AVSC_DECLARE_FUNC(avs_subframe);
  AVSC_DECLARE_FUNC(avs_subframe_planar);
  AVSC_DECLARE_FUNC(avs_take_clip);
  AVSC_DECLARE_FUNC(avs_vsprintf);
  AVSC_DECLARE_FUNC(avs_get_error);
  AVSC_DECLARE_FUNC(avs_is_yv24);
  AVSC_DECLARE_FUNC(avs_is_yv16);
  AVSC_DECLARE_FUNC(avs_is_yv12);
  AVSC_DECLARE_FUNC(avs_is_yv411);
  AVSC_DECLARE_FUNC(avs_is_y8);
  AVSC_DECLARE_FUNC(avs_is_color_space);
  AVSC_DECLARE_FUNC(avs_get_plane_width_subsampling);
  AVSC_DECLARE_FUNC(avs_get_plane_height_subsampling);
  AVSC_DECLARE_FUNC(avs_bits_per_pixel);
  AVSC_DECLARE_FUNC(avs_bytes_from_pixels);
  AVSC_DECLARE_FUNC(avs_row_size);
  AVSC_DECLARE_FUNC(avs_bmp_size);
  AVSC_DECLARE_FUNC(avs_get_pitch_p);
  AVSC_DECLARE_FUNC(avs_get_row_size_p);
  AVSC_DECLARE_FUNC(avs_get_height_p);
  AVSC_DECLARE_FUNC(avs_get_read_ptr_p);
  AVSC_DECLARE_FUNC(avs_is_writable);
  AVSC_DECLARE_FUNC(avs_get_write_ptr_p);
 };
 #undef AVSC_DECLARE_FUNC
 AVSC_INLINE AVS_Library * avs_load_library() {
  AVS_Library *library = (AVS_Library *)malloc(sizeof(AVS_Library));
  if (library == NULL)
    return NULL;
  library->handle = LoadLibrary("avisynth");
  if (library->handle == NULL)
    goto fail;
 #define __AVSC_STRINGIFY(x) #x
 #define AVSC_STRINGIFY(x) __AVSC_STRINGIFY(x)
 #define AVSC_LOAD_FUNC(name) {\
  library->name = (name##_func) GetProcAddress(library->handle, AVSC_STRINGIFY(name));\
  if (library->name == NULL)\
    goto fail;\
 }
  AVSC_LOAD_FUNC(avs_add_function);
  AVSC_LOAD_FUNC(avs_at_exit);
  AVSC_LOAD_FUNC(avs_bit_blt);
  AVSC_LOAD_FUNC(avs_check_version);
  AVSC_LOAD_FUNC(avs_clip_get_error);
  AVSC_LOAD_FUNC(avs_copy_clip);
  AVSC_LOAD_FUNC(avs_copy_value);
  AVSC_LOAD_FUNC(avs_copy_video_frame);
  AVSC_LOAD_FUNC(avs_create_script_environment);
  AVSC_LOAD_FUNC(avs_delete_script_environment);
  AVSC_LOAD_FUNC(avs_function_exists);
  AVSC_LOAD_FUNC(avs_get_audio);
  AVSC_LOAD_FUNC(avs_get_cpu_flags);
  AVSC_LOAD_FUNC(avs_get_frame);
  AVSC_LOAD_FUNC(avs_get_parity);
  AVSC_LOAD_FUNC(avs_get_var);
  AVSC_LOAD_FUNC(avs_get_version);
  AVSC_LOAD_FUNC(avs_get_video_info);
  AVSC_LOAD_FUNC(avs_invoke);
  AVSC_LOAD_FUNC(avs_make_writable);
  AVSC_LOAD_FUNC(avs_new_c_filter);
  AVSC_LOAD_FUNC(avs_new_video_frame_a);
  AVSC_LOAD_FUNC(avs_release_clip);
  AVSC_LOAD_FUNC(avs_release_value);
  AVSC_LOAD_FUNC(avs_release_video_frame);
  AVSC_LOAD_FUNC(avs_save_string);
  AVSC_LOAD_FUNC(avs_set_cache_hints);
  AVSC_LOAD_FUNC(avs_set_global_var);
  AVSC_LOAD_FUNC(avs_set_memory_max);
  AVSC_LOAD_FUNC(avs_set_to_clip);
  AVSC_LOAD_FUNC(avs_set_var);
  AVSC_LOAD_FUNC(avs_set_working_dir);
  AVSC_LOAD_FUNC(avs_sprintf);
  AVSC_LOAD_FUNC(avs_subframe);
  AVSC_LOAD_FUNC(avs_subframe_planar);
  AVSC_LOAD_FUNC(avs_take_clip);
  AVSC_LOAD_FUNC(avs_vsprintf);
  AVSC_LOAD_FUNC(avs_get_error);
  AVSC_LOAD_FUNC(avs_is_yv24);
  AVSC_LOAD_FUNC(avs_is_yv16);
  AVSC_LOAD_FUNC(avs_is_yv12);
  AVSC_LOAD_FUNC(avs_is_yv411);
  AVSC_LOAD_FUNC(avs_is_y8);
  AVSC_LOAD_FUNC(avs_is_color_space);
  AVSC_LOAD_FUNC(avs_get_plane_width_subsampling);
  AVSC_LOAD_FUNC(avs_get_plane_height_subsampling);
  AVSC_LOAD_FUNC(avs_bits_per_pixel);
  AVSC_LOAD_FUNC(avs_bytes_from_pixels);
  AVSC_LOAD_FUNC(avs_row_size);
  AVSC_LOAD_FUNC(avs_bmp_size);
  AVSC_LOAD_FUNC(avs_get_pitch_p);
  AVSC_LOAD_FUNC(avs_get_row_size_p);
  AVSC_LOAD_FUNC(avs_get_height_p);
  AVSC_LOAD_FUNC(avs_get_read_ptr_p);
  AVSC_LOAD_FUNC(avs_is_writable);
  AVSC_LOAD_FUNC(avs_get_write_ptr_p);
 #undef __AVSC_STRINGIFY
 #undef AVSC_STRINGIFY
 #undef AVSC_LOAD_FUNC
  return library;
 fail:
  free(library);
  return NULL;
 }
 AVSC_INLINE void avs_free_library(AVS_Library *library) {
  if (library == NULL)
    return;
  FreeLibrary(library->handle);
  free(library);
 }
 #endif
 #endif
--- a/compat/avisynth/avs/capi.h
+++ b/compat/avisynth/avs/capi.h
@@ -0,0 +1,62 @@
 // Avisynth C Interface Version 0.20
 // Copyright 2003 Kevin Atkinson
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation; either version 2 of the License, or
 // (at your option) any later version.
 //
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
 // http://www.gnu.org/copyleft/gpl.html .
 //
 // As a special exception, I give you permission to link to the
 // Avisynth C interface with independent modules that communicate with
 // the Avisynth C interface solely through the interfaces defined in
 // avisynth_c.h, regardless of the license terms of these independent
 // modules, and to copy and distribute the resulting combined work
 // under terms of your choice, provided that every copy of the
 // combined work is accompanied by a complete copy of the source code
 // of the Avisynth C interface and Avisynth itself (with the version
 // used to produce the combined work), being distributed under the
 // terms of the GNU General Public License plus this exception.  An
 // independent module is a module which is not derived from or based
 // on Avisynth C Interface, such as 3rd-party filters, import and
 // export plugins, or graphical user interfaces.
 #ifndef AVS_CAPI_H
 #define AVS_CAPI_H
 #ifdef __cplusplus
 #  define EXTERN_C extern "C"
 #else
 #  define EXTERN_C
 #endif
 #ifndef AVSC_USE_STDCALL
 #  define AVSC_CC __cdecl
 #else
 #  define AVSC_CC __stdcall
 #endif
 #define AVSC_INLINE static __inline
 #ifdef BUILDING_AVSCORE
 #  define AVSC_EXPORT EXTERN_C
 #  define AVSC_API(ret, name) EXTERN_C __declspec(dllexport) ret AVSC_CC name
 #else
 #  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
 #  ifndef AVSC_NO_DECLSPEC
 #    define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
 #  else
 #    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
 #  endif
 #endif
 #endif //AVS_CAPI_H
--- a/compat/avisynth/avs/config.h
+++ b/compat/avisynth/avs/config.h
@@ -0,0 +1,55 @@
 // Avisynth C Interface Version 0.20
 // Copyright 2003 Kevin Atkinson
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation; either version 2 of the License, or
 // (at your option) any later version.
 //
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
 // http://www.gnu.org/copyleft/gpl.html .
 //
 // As a special exception, I give you permission to link to the
 // Avisynth C interface with independent modules that communicate with
 // the Avisynth C interface solely through the interfaces defined in
 // avisynth_c.h, regardless of the license terms of these independent
 // modules, and to copy and distribute the resulting combined work
 // under terms of your choice, provided that every copy of the
 // combined work is accompanied by a complete copy of the source code
 // of the Avisynth C interface and Avisynth itself (with the version
 // used to produce the combined work), being distributed under the
 // terms of the GNU General Public License plus this exception.  An
 // independent module is a module which is not derived from or based
 // on Avisynth C Interface, such as 3rd-party filters, import and
 // export plugins, or graphical user interfaces.
 #ifndef AVS_CONFIG_H
 #define AVS_CONFIG_H
 // Undefine this to get cdecl calling convention
 #define AVSC_USE_STDCALL 1
 // NOTE TO PLUGIN AUTHORS:
 // Because FRAME_ALIGN can be substantially higher than the alignment
 // a plugin actually needs, plugins should not use FRAME_ALIGN to check for
 // alignment. They should always request the exact alignment value they need.
 // This is to make sure that plugins work over the widest range of AviSynth
 // builds possible.
 #define FRAME_ALIGN 32
 #if   defined(_M_AMD64) || defined(__x86_64)
 #   define X86_64
 #elif defined(_M_IX86) || defined(__i386__)
 #   define X86_32
 #else
 #   error Unsupported CPU architecture.
 #endif
 #endif //AVS_CONFIG_H
--- a/compat/avisynth/avs/types.h
+++ b/compat/avisynth/avs/types.h
@@ -0,0 +1,51 @@
 // Avisynth C Interface Version 0.20
 // Copyright 2003 Kevin Atkinson
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation; either version 2 of the License, or
 // (at your option) any later version.
 //
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
 // http://www.gnu.org/copyleft/gpl.html .
 //
 // As a special exception, I give you permission to link to the
 // Avisynth C interface with independent modules that communicate with
 // the Avisynth C interface solely through the interfaces defined in
 // avisynth_c.h, regardless of the license terms of these independent
 // modules, and to copy and distribute the resulting combined work
 // under terms of your choice, provided that every copy of the
 // combined work is accompanied by a complete copy of the source code
 // of the Avisynth C interface and Avisynth itself (with the version
 // used to produce the combined work), being distributed under the
 // terms of the GNU General Public License plus this exception.  An
 // independent module is a module which is not derived from or based
 // on Avisynth C Interface, such as 3rd-party filters, import and
 // export plugins, or graphical user interfaces.
 #ifndef AVS_TYPES_H
 #define AVS_TYPES_H
 // Define all types necessary for interfacing with avisynth.dll
 // Raster types used by VirtualDub & Avisynth
 typedef unsigned int    Pixel32;
 typedef unsigned char   BYTE;
 // Audio Sample information
 typedef float SFLOAT;
 #ifdef __GNUC__
 typedef long long int INT64;
 #else
 typedef __int64 INT64;
 #endif
 #endif //AVS_TYPES_H
--- a/compat/avisynth/avxsynth_c.h
+++ b/compat/avisynth/avxsynth_c.h
@@ -0,0 +1,728 @@
 // Avisynth C Interface Version 0.20
 // Copyright 2003 Kevin Atkinson
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation; either version 2 of the License, or
 // (at your option) any later version.
 //
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 // MA 02110-1301 USA, or visit
 // http://www.gnu.org/copyleft/gpl.html .
 //
 // As a special exception, I give you permission to link to the
 // Avisynth C interface with independent modules that communicate with
 // the Avisynth C interface solely through the interfaces defined in
 // avisynth_c.h, regardless of the license terms of these independent
 // modules, and to copy and distribute the resulting combined work
 // under terms of your choice, provided that every copy of the
 // combined work is accompanied by a complete copy of the source code
 // of the Avisynth C interface and Avisynth itself (with the version
 // used to produce the combined work), being distributed under the
 // terms of the GNU General Public License plus this exception.  An
 // independent module is a module which is not derived from or based
 // on Avisynth C Interface, such as 3rd-party filters, import and
 // export plugins, or graphical user interfaces.
 #ifndef __AVXSYNTH_C__
 #define __AVXSYNTH_C__
 #include "windowsPorts/windows2linux.h"
 #include <stdarg.h>
 #ifdef __cplusplus
 #  define EXTERN_C extern "C"
 #else
 #  define EXTERN_C
 #endif
 #define AVSC_USE_STDCALL 1
 #ifndef AVSC_USE_STDCALL
 #  define AVSC_CC __cdecl
 #else
 #  define AVSC_CC __stdcall
 #endif
 #define AVSC_INLINE static __inline
 #ifdef AVISYNTH_C_EXPORTS
 #  define AVSC_EXPORT EXTERN_C
 #  define AVSC_API(ret, name) EXTERN_C __declspec(dllexport) ret AVSC_CC name
 #else
 #  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
 #  ifndef AVSC_NO_DECLSPEC
 #    define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
 #  else
 #    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
 #  endif
 #endif
 #ifdef __GNUC__
 typedef long long int INT64;
 #else
 typedef __int64 INT64;
 #endif
 /////////////////////////////////////////////////////////////////////
 //
 // Constants
 //
 #ifndef __AVXSYNTH_H__
 enum { AVISYNTH_INTERFACE_VERSION = 3 };
 #endif
 enum {AVS_SAMPLE_INT8  = 1<<0,
      AVS_SAMPLE_INT16 = 1<<1,
      AVS_SAMPLE_INT24 = 1<<2,
      AVS_SAMPLE_INT32 = 1<<3,
      AVS_SAMPLE_FLOAT = 1<<4};
 enum {AVS_PLANAR_Y=1<<0,
      AVS_PLANAR_U=1<<1,
      AVS_PLANAR_V=1<<2,
      AVS_PLANAR_ALIGNED=1<<3,
      AVS_PLANAR_Y_ALIGNED=AVS_PLANAR_Y|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_U_ALIGNED=AVS_PLANAR_U|AVS_PLANAR_ALIGNED,
      AVS_PLANAR_V_ALIGNED=AVS_PLANAR_V|AVS_PLANAR_ALIGNED};
  // Colorspace properties.
 enum {AVS_CS_BGR = 1<<28,
      AVS_CS_YUV = 1<<29,
      AVS_CS_INTERLEAVED = 1<<30,
      AVS_CS_PLANAR = 1<<31};
  // Specific colorformats
 enum {
  AVS_CS_UNKNOWN = 0,
  AVS_CS_BGR24 = 1<<0 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  AVS_CS_BGR32 = 1<<1 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  AVS_CS_YUY2 = 1<<2 | AVS_CS_YUV | AVS_CS_INTERLEAVED,
  AVS_CS_YV12 = 1<<3 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-v-u, planar
  AVS_CS_I420 = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-u-v, planar
  AVS_CS_IYUV = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR  // same as above
 };
 enum {
  AVS_IT_BFF = 1<<0,
  AVS_IT_TFF = 1<<1,
  AVS_IT_FIELDBASED = 1<<2};
 enum {
  AVS_FILTER_TYPE=1,
  AVS_FILTER_INPUT_COLORSPACE=2,
  AVS_FILTER_OUTPUT_TYPE=9,
  AVS_FILTER_NAME=4,
  AVS_FILTER_AUTHOR=5,
  AVS_FILTER_VERSION=6,
  AVS_FILTER_ARGS=7,
  AVS_FILTER_ARGS_INFO=8,
  AVS_FILTER_ARGS_DESCRIPTION=10,
  AVS_FILTER_DESCRIPTION=11};
 enum {  //SUBTYPES
  AVS_FILTER_TYPE_AUDIO=1,
  AVS_FILTER_TYPE_VIDEO=2,
  AVS_FILTER_OUTPUT_TYPE_SAME=3,
  AVS_FILTER_OUTPUT_TYPE_DIFFERENT=4};
 enum {
  AVS_CACHE_NOTHING=0,
  AVS_CACHE_RANGE=1,
  AVS_CACHE_ALL=2,
  AVS_CACHE_AUDIO=3,
  AVS_CACHE_AUDIO_NONE=4,
  AVS_CACHE_AUDIO_AUTO=5
 };
 #define AVS_FRAME_ALIGN 16
 typedef struct AVS_Clip AVS_Clip;
 typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_VideoInfo
 //
 // AVS_VideoInfo is layed out identicly to VideoInfo
 typedef struct AVS_VideoInfo {
  int width, height;    // width=0 means no video
  unsigned fps_numerator, fps_denominator;
  int num_frames;
  int pixel_type;
  int audio_samples_per_second;   // 0 means no audio
  int sample_type;
  INT64 num_audio_samples;
  int nchannels;
  // Imagetype properties
  int image_type;
 } AVS_VideoInfo;
 // useful functions of the above
 AVSC_INLINE int avs_has_video(const AVS_VideoInfo * p)
        { return (p->width!=0); }
 AVSC_INLINE int avs_has_audio(const AVS_VideoInfo * p)
        { return (p->audio_samples_per_second!=0); }
 AVSC_INLINE int avs_is_rgb(const AVS_VideoInfo * p)
        { return !!(p->pixel_type&AVS_CS_BGR); }
 AVSC_INLINE int avs_is_rgb24(const AVS_VideoInfo * p)
        { return (p->pixel_type&AVS_CS_BGR24)==AVS_CS_BGR24; } // Clear out additional properties
 AVSC_INLINE int avs_is_rgb32(const AVS_VideoInfo * p)
        { return (p->pixel_type & AVS_CS_BGR32) == AVS_CS_BGR32 ; }
 AVSC_INLINE int avs_is_yuv(const AVS_VideoInfo * p)
        { return !!(p->pixel_type&AVS_CS_YUV ); }
 AVSC_INLINE int avs_is_yuy2(const AVS_VideoInfo * p)
        { return (p->pixel_type & AVS_CS_YUY2) == AVS_CS_YUY2; }
 AVSC_INLINE int avs_is_yv12(const AVS_VideoInfo * p)
        { return ((p->pixel_type & AVS_CS_YV12) == AVS_CS_YV12)||((p->pixel_type & AVS_CS_I420) == AVS_CS_I420); }
 AVSC_INLINE int avs_is_color_space(const AVS_VideoInfo * p, int c_space)
        { return ((p->pixel_type & c_space) == c_space); }
 AVSC_INLINE int avs_is_property(const AVS_VideoInfo * p, int property)
        { return ((p->pixel_type & property)==property ); }
 AVSC_INLINE int avs_is_planar(const AVS_VideoInfo * p)
        { return !!(p->pixel_type & AVS_CS_PLANAR); }
 AVSC_INLINE int avs_is_field_based(const AVS_VideoInfo * p)
        { return !!(p->image_type & AVS_IT_FIELDBASED); }
 AVSC_INLINE int avs_is_parity_known(const AVS_VideoInfo * p)
        { return ((p->image_type & AVS_IT_FIELDBASED)&&(p->image_type & (AVS_IT_BFF | AVS_IT_TFF))); }
 AVSC_INLINE int avs_is_bff(const AVS_VideoInfo * p)
        { return !!(p->image_type & AVS_IT_BFF); }
 AVSC_INLINE int avs_is_tff(const AVS_VideoInfo * p)
        { return !!(p->image_type & AVS_IT_TFF); }
 AVSC_INLINE int avs_bits_per_pixel(const AVS_VideoInfo * p)
 {
  switch (p->pixel_type) {
      case AVS_CS_BGR24: return 24;
      case AVS_CS_BGR32: return 32;
      case AVS_CS_YUY2:  return 16;
      case AVS_CS_YV12:
      case AVS_CS_I420:  return 12;
      default:           return 0;
    }
 }
 AVSC_INLINE int avs_bytes_from_pixels(const AVS_VideoInfo * p, int pixels)
        { return pixels * (avs_bits_per_pixel(p)>>3); }   // Will work on planar images, but will return only luma planes
 AVSC_INLINE int avs_row_size(const AVS_VideoInfo * p)
        { return avs_bytes_from_pixels(p,p->width); }  // Also only returns first plane on planar images
 AVSC_INLINE int avs_bmp_size(const AVS_VideoInfo * vi)
        { if (avs_is_planar(vi)) {int p = vi->height * ((avs_row_size(vi)+3) & ~3); p+=p>>1; return p;  } return vi->height * ((avs_row_size(vi)+3) & ~3); }
 AVSC_INLINE int avs_samples_per_second(const AVS_VideoInfo * p)
        { return p->audio_samples_per_second; }
 AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p)
 {
    switch (p->sample_type) {
      case AVS_SAMPLE_INT8:  return sizeof(signed char);
      case AVS_SAMPLE_INT16: return sizeof(signed short);
      case AVS_SAMPLE_INT24: return 3;
      case AVS_SAMPLE_INT32: return sizeof(signed int);
      case AVS_SAMPLE_FLOAT: return sizeof(float);
      default: return 0;
    }
 }
 AVSC_INLINE int avs_bytes_per_audio_sample(const AVS_VideoInfo * p)
        { return p->nchannels*avs_bytes_per_channel_sample(p);}
 AVSC_INLINE INT64 avs_audio_samples_from_frames(const AVS_VideoInfo * p, INT64 frames)
        { return ((INT64)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
 AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
        { return (int)(samples * (INT64)p->fps_numerator / (INT64)p->fps_denominator / (INT64)p->audio_samples_per_second); }
 AVSC_INLINE INT64 avs_audio_samples_from_bytes(const AVS_VideoInfo * p, INT64 bytes)
        { return bytes / avs_bytes_per_audio_sample(p); }
 AVSC_INLINE INT64 avs_bytes_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
        { return samples * avs_bytes_per_audio_sample(p); }
 AVSC_INLINE int avs_audio_channels(const AVS_VideoInfo * p)
        { return p->nchannels; }
 AVSC_INLINE int avs_sample_type(const AVS_VideoInfo * p)
        { return p->sample_type;}
 // useful mutator
 AVSC_INLINE void avs_set_property(AVS_VideoInfo * p, int property)
        { p->image_type|=property; }
 AVSC_INLINE void avs_clear_property(AVS_VideoInfo * p, int property)
        { p->image_type&=~property; }
 AVSC_INLINE void avs_set_field_based(AVS_VideoInfo * p, int isfieldbased)
        { if (isfieldbased) p->image_type|=AVS_IT_FIELDBASED; else p->image_type&=~AVS_IT_FIELDBASED; }
 AVSC_INLINE void avs_set_fps(AVS_VideoInfo * p, unsigned numerator, unsigned denominator)
 {
    unsigned x=numerator, y=denominator;
    while (y) {   // find gcd
      unsigned t = x%y; x = y; y = t;
    }
    p->fps_numerator = numerator/x;
    p->fps_denominator = denominator/x;
 }
 AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
 {
        return (x->pixel_type == y->pixel_type)
                || (avs_is_yv12(x) && avs_is_yv12(y));
 }
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_VideoFrame
 //
 // VideoFrameBuffer holds information about a memory block which is used
 // for video data.  For efficiency, instances of this class are not deleted
 // when the refcount reaches zero; instead they're stored in a linked list
 // to be reused.  The instances are deleted when the corresponding AVS
 // file is closed.
 // AVS_VideoFrameBuffer is layed out identicly to VideoFrameBuffer
 // DO NOT USE THIS STRUCTURE DIRECTLY
 typedef struct AVS_VideoFrameBuffer {
  unsigned char * data;
  int data_size;
  // sequence_number is incremented every time the buffer is changed, so
  // that stale views can tell they're no longer valid.
  long sequence_number;
  long refcount;
 } AVS_VideoFrameBuffer;
 // VideoFrame holds a "window" into a VideoFrameBuffer.
 // AVS_VideoFrame is layed out identicly to IVideoFrame
 // DO NOT USE THIS STRUCTURE DIRECTLY
 typedef struct AVS_VideoFrame {
  int refcount;
  AVS_VideoFrameBuffer * vfb;
  int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
 } AVS_VideoFrame;
 // Access functions for AVS_VideoFrame
 AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p) {
        return p->pitch;}
 AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame * p, int plane) {
  switch (plane) {
  case AVS_PLANAR_U: case AVS_PLANAR_V: return p->pitchUV;}
  return p->pitch;}
 AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p) {
        return p->row_size; }
 AVSC_INLINE int avs_get_row_size_p(const AVS_VideoFrame * p, int plane) {
        int r;
    switch (plane) {
    case AVS_PLANAR_U: case AVS_PLANAR_V:
                if (p->pitchUV) return p->row_size>>1;
                else            return 0;
    case AVS_PLANAR_U_ALIGNED: case AVS_PLANAR_V_ALIGNED:
                if (p->pitchUV) {
                        r = ((p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)) )>>1; // Aligned rowsize
                        if (r < p->pitchUV)
                                return r;
                        return p->row_size>>1;
                } else return 0;
    case AVS_PLANAR_Y_ALIGNED:
                r = (p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)); // Aligned rowsize
                if (r <= p->pitch)
                        return r;
                return p->row_size;
    }
    return p->row_size;
 }
 AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p) {
        return p->height;}
 AVSC_INLINE int avs_get_height_p(const AVS_VideoFrame * p, int plane) {
        switch (plane) {
                case AVS_PLANAR_U: case AVS_PLANAR_V:
                        if (p->pitchUV) return p->height>>1;
                        return 0;
        }
        return p->height;}
 AVSC_INLINE const unsigned char* avs_get_read_ptr(const AVS_VideoFrame * p) {
        return p->vfb->data + p->offset;}
 AVSC_INLINE const unsigned char* avs_get_read_ptr_p(const AVS_VideoFrame * p, int plane)
 {
        switch (plane) {
                case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
                case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
                default:           return p->vfb->data + p->offset;}
 }
 AVSC_INLINE int avs_is_writable(const AVS_VideoFrame * p) {
        return (p->refcount == 1 && p->vfb->refcount == 1);}
 AVSC_INLINE unsigned char* avs_get_write_ptr(const AVS_VideoFrame * p)
 {
        if (avs_is_writable(p)) {
                ++p->vfb->sequence_number;
                return p->vfb->data + p->offset;
        } else
                return 0;
 }
 AVSC_INLINE unsigned char* avs_get_write_ptr_p(const AVS_VideoFrame * p, int plane)
 {
        if (plane==AVS_PLANAR_Y && avs_is_writable(p)) {
                ++p->vfb->sequence_number;
                return p->vfb->data + p->offset;
        } else if (plane==AVS_PLANAR_Y) {
                return 0;
        } else {
                switch (plane) {
                        case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
                        case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
                        default:       return p->vfb->data + p->offset;
                }
        }
 }
 #if defined __cplusplus
 extern "C"
 {
 #endif // __cplusplus
 AVSC_API(void, avs_release_video_frame)(AVS_VideoFrame *);
 // makes a shallow copy of a video frame
 AVSC_API(AVS_VideoFrame *, avs_copy_video_frame)(AVS_VideoFrame *);
 #if defined __cplusplus
 }
 #endif // __cplusplus
 #ifndef AVSC_NO_DECLSPEC
 AVSC_INLINE void avs_release_frame(AVS_VideoFrame * f)
  {avs_release_video_frame(f);}
 AVSC_INLINE AVS_VideoFrame * avs_copy_frame(AVS_VideoFrame * f)
  {return avs_copy_video_frame(f);}
 #endif
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_Value
 //
 // Treat AVS_Value as a fat pointer.  That is use avs_copy_value
 // and avs_release_value appropiaty as you would if AVS_Value was
 // a pointer.
 // To maintain source code compatibility with future versions of the
 // avisynth_c API don't use the AVS_Value directly.  Use the helper
 // functions below.
 // AVS_Value is layed out identicly to AVSValue
 typedef struct AVS_Value AVS_Value;
 struct AVS_Value {
  short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong
               // for some function e'rror
  short array_size;
  union {
    void * clip; // do not use directly, use avs_take_clip
    char boolean;
    int integer;
    INT64 integer64; // match addition of __int64 to avxplugin.h
    float floating_pt;
    const char * string;
    const AVS_Value * array;
  } d;
 };
 // AVS_Value should be initilized with avs_void.
 // Should also set to avs_void after the value is released
 // with avs_copy_value.  Consider it the equalvent of setting
 // a pointer to NULL
 static const AVS_Value avs_void = {'v'};
 AVSC_API(void, avs_copy_value)(AVS_Value * dest, AVS_Value src);
 AVSC_API(void, avs_release_value)(AVS_Value);
 AVSC_INLINE int avs_defined(AVS_Value v) { return v.type != 'v'; }
 AVSC_INLINE int avs_is_clip(AVS_Value v) { return v.type == 'c'; }
 AVSC_INLINE int avs_is_bool(AVS_Value v) { return v.type == 'b'; }
 AVSC_INLINE int avs_is_int(AVS_Value v) { return v.type == 'i'; }
 AVSC_INLINE int avs_is_float(AVS_Value v) { return v.type == 'f' || v.type == 'i'; }
 AVSC_INLINE int avs_is_string(AVS_Value v) { return v.type == 's'; }
 AVSC_INLINE int avs_is_array(AVS_Value v) { return v.type == 'a'; }
 AVSC_INLINE int avs_is_error(AVS_Value v) { return v.type == 'e'; }
 #if defined __cplusplus
 extern "C"
 {
 #endif // __cplusplus
 AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
 AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
 #if defined __cplusplus
 }
 #endif // __cplusplus
 AVSC_INLINE int avs_as_bool(AVS_Value v)
        { return v.d.boolean; }
 AVSC_INLINE int avs_as_int(AVS_Value v)
        { return v.d.integer; }
 AVSC_INLINE const char * avs_as_string(AVS_Value v)
        { return avs_is_error(v) || avs_is_string(v) ? v.d.string : 0; }
 AVSC_INLINE double avs_as_float(AVS_Value v)
        { return avs_is_int(v) ? v.d.integer : v.d.floating_pt; }
 AVSC_INLINE const char * avs_as_error(AVS_Value v)
        { return avs_is_error(v) ? v.d.string : 0; }
 AVSC_INLINE const AVS_Value * avs_as_array(AVS_Value v)
        { return v.d.array; }
 AVSC_INLINE int avs_array_size(AVS_Value v)
        { return avs_is_array(v) ? v.array_size : 1; }
 AVSC_INLINE AVS_Value avs_array_elt(AVS_Value v, int index)
        { return avs_is_array(v) ? v.d.array[index] : v; }
 // only use these functions on am AVS_Value that does not already have
 // an active value.  Remember, treat AVS_Value as a fat pointer.
 AVSC_INLINE AVS_Value avs_new_value_bool(int v0)
        { AVS_Value v = {0}; v.type = 'b'; v.d.boolean = v0 == 0 ? 0 : 1; return v; }
 AVSC_INLINE AVS_Value avs_new_value_int(int v0)
        { AVS_Value v = {0}; v.type = 'i'; v.d.integer = v0; return v; }
 AVSC_INLINE AVS_Value avs_new_value_string(const char * v0)
        { AVS_Value v = {0}; v.type = 's'; v.d.string = v0; return v; }
 AVSC_INLINE AVS_Value avs_new_value_float(float v0)
        { AVS_Value v = {0}; v.type = 'f'; v.d.floating_pt = v0; return v;}
 AVSC_INLINE AVS_Value avs_new_value_error(const char * v0)
        { AVS_Value v = {0}; v.type = 'e'; v.d.string = v0; return v; }
 #ifndef AVSC_NO_DECLSPEC
 AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
        { AVS_Value v = {0}; avs_set_to_clip(&v, v0); return v; }
 #endif
 AVSC_INLINE AVS_Value avs_new_value_array(AVS_Value * v0, int size)
        { AVS_Value v = {0}; v.type = 'a'; v.d.array = v0; v.array_size = size; return v; }
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_Clip
 //
 #if defined __cplusplus
 extern "C"
 {
 #endif // __cplusplus
 AVSC_API(void, avs_release_clip)(AVS_Clip *);
 AVSC_API(AVS_Clip *, avs_copy_clip)(AVS_Clip *);
 AVSC_API(const char *, avs_clip_get_error)(AVS_Clip *); // return 0 if no error
 AVSC_API(const AVS_VideoInfo *, avs_get_video_info)(AVS_Clip *);
 AVSC_API(int, avs_get_version)(AVS_Clip *);
 AVSC_API(AVS_VideoFrame *, avs_get_frame)(AVS_Clip *, int n);
 // The returned video frame must be released with avs_release_video_frame
 AVSC_API(int, avs_get_parity)(AVS_Clip *, int n);
 // return field parity if field_based, else parity of first field in frame
 AVSC_API(int, avs_get_audio)(AVS_Clip *, void * buf,
                                  INT64 start, INT64 count);
 // start and count are in samples
 AVSC_API(int, avs_set_cache_hints)(AVS_Clip *,
                                        int cachehints, size_t frame_range);
 #if defined __cplusplus
 }
 #endif // __cplusplus
 // This is the callback type used by avs_add_function
 typedef AVS_Value (AVSC_CC * AVS_ApplyFunc)
                        (AVS_ScriptEnvironment *, AVS_Value args, void * user_data);
 typedef struct AVS_FilterInfo AVS_FilterInfo;
 struct AVS_FilterInfo
 {
  // these members should not be modified outside of the AVS_ApplyFunc callback
  AVS_Clip * child;
  AVS_VideoInfo vi;
  AVS_ScriptEnvironment * env;
  AVS_VideoFrame * (AVSC_CC * get_frame)(AVS_FilterInfo *, int n);
  int (AVSC_CC * get_parity)(AVS_FilterInfo *, int n);
  int (AVSC_CC * get_audio)(AVS_FilterInfo *, void * buf,
                                  INT64 start, INT64 count);
  int (AVSC_CC * set_cache_hints)(AVS_FilterInfo *, int cachehints,
                                        int frame_range);
  void (AVSC_CC * free_filter)(AVS_FilterInfo *);
  // Should be set when ever there is an error to report.
  // It is cleared before any of the above methods are called
  const char * error;
  // this is to store whatever and may be modified at will
  void * user_data;
 };
 // Create a new filter
 // fi is set to point to the AVS_FilterInfo so that you can
 //   modify it once it is initilized.
 // store_child should generally be set to true.  If it is not
 //    set than ALL methods (the function pointers) must be defined
 // If it is set than you do not need to worry about freeing the child
 //    clip.
 #if defined __cplusplus
 extern "C"
 {
 #endif // __cplusplus
 AVSC_API(AVS_Clip *, avs_new_c_filter)(AVS_ScriptEnvironment * e,
                                      AVS_FilterInfo * * fi,
                                      AVS_Value child, int store_child);
 #if defined __cplusplus
 }
 #endif // __cplusplus
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_ScriptEnvironment
 //
 // For GetCPUFlags.  These are backwards-compatible with those in VirtualDub.
 enum {
                                /* slowest CPU to support extension */
  AVS_CPU_FORCE        = 0x01,   // N/A
  AVS_CPU_FPU          = 0x02,   // 386/486DX
  AVS_CPU_MMX          = 0x04,   // P55C, K6, PII
  AVS_CPU_INTEGER_SSE  = 0x08,   // PIII, Athlon
  AVS_CPU_SSE          = 0x10,   // PIII, Athlon XP/MP
  AVS_CPU_SSE2         = 0x20,   // PIV, Hammer
  AVS_CPU_3DNOW        = 0x40,   // K6-2
  AVS_CPU_3DNOW_EXT    = 0x80,   // Athlon
  AVS_CPU_X86_64       = 0xA0,   // Hammer (note: equiv. to 3DNow + SSE2,
                                 // which only Hammer will have anyway)
 };
 #if defined __cplusplus
 extern "C"
 {
 #endif // __cplusplus
 AVSC_API(const char *, avs_get_error)(AVS_ScriptEnvironment *); // return 0 if no error
 AVSC_API(long, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
 AVSC_API(int, avs_check_version)(AVS_ScriptEnvironment *, int version);
 AVSC_API(char *, avs_save_string)(AVS_ScriptEnvironment *, const char* s, int length);
 AVSC_API(char *, avs_sprintf)(AVS_ScriptEnvironment *, const char * fmt, ...);
 AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, va_list val);
 // note: val is really a va_list; I hope everyone typedefs va_list to a pointer
 AVSC_API(int, avs_add_function)(AVS_ScriptEnvironment *,
                                     const char * name, const char * params,
                                     AVS_ApplyFunc apply, void * user_data);
 AVSC_API(int, avs_function_exists)(AVS_ScriptEnvironment *, const char * name);
 AVSC_API(AVS_Value, avs_invoke)(AVS_ScriptEnvironment *, const char * name,
                               AVS_Value args, const char** arg_names);
 // The returned value must be be released with avs_release_value
 AVSC_API(AVS_Value, avs_get_var)(AVS_ScriptEnvironment *, const char* name);
 // The returned value must be be released with avs_release_value
 AVSC_API(int, avs_set_var)(AVS_ScriptEnvironment *, const char* name, AVS_Value val);
 AVSC_API(int, avs_set_global_var)(AVS_ScriptEnvironment *, const char* name, const AVS_Value val);
 //void avs_push_context(AVS_ScriptEnvironment *, int level=0);
 //void avs_pop_context(AVS_ScriptEnvironment *);
 AVSC_API(AVS_VideoFrame *, avs_new_video_frame_a)(AVS_ScriptEnvironment *,
                                          const AVS_VideoInfo * vi, int align);
 // align should be at least 16
 #if defined __cplusplus
 }
 #endif // __cplusplus
 #ifndef AVSC_NO_DECLSPEC
 AVSC_INLINE
 AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env,
                                     const AVS_VideoInfo * vi)
  {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
 AVSC_INLINE
 AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env,
                               const AVS_VideoInfo * vi)
  {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
 #endif
 #if defined __cplusplus
 extern "C"
 {
 #endif // __cplusplus
 AVSC_API(int, avs_make_writable)(AVS_ScriptEnvironment *, AVS_VideoFrame * * pvf);
 AVSC_API(void, avs_bit_blt)(AVS_ScriptEnvironment *, unsigned char* dstp, int dst_pitch, const unsigned char* srcp, int src_pitch, int row_size, int height);
 typedef void (AVSC_CC *AVS_ShutdownFunc)(void* user_data, AVS_ScriptEnvironment * env);
 AVSC_API(void, avs_at_exit)(AVS_ScriptEnvironment *, AVS_ShutdownFunc function, void * user_data);
 AVSC_API(AVS_VideoFrame *, avs_subframe)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height);
 // The returned video frame must be be released
 AVSC_API(int, avs_set_memory_max)(AVS_ScriptEnvironment *, int mem);
 AVSC_API(int, avs_set_working_dir)(AVS_ScriptEnvironment *, const char * newdir);
 // avisynth.dll exports this; it's a way to use it as a library, without
 // writing an AVS script or without going through AVIFile.
 AVSC_API(AVS_ScriptEnvironment *, avs_create_script_environment)(int version);
 #if defined __cplusplus
 }
 #endif // __cplusplus
 // this symbol is the entry point for the plugin and must
 // be defined
 AVSC_EXPORT
 const char * AVSC_CC avisynth_c_plugin_init(AVS_ScriptEnvironment* env);
 #if defined __cplusplus
 extern "C"
 {
 #endif // __cplusplus
 AVSC_API(void, avs_delete_script_environment)(AVS_ScriptEnvironment *);
 AVSC_API(AVS_VideoFrame *, avs_subframe_planar)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height, int rel_offsetU, int rel_offsetV, int new_pitchUV);
 // The returned video frame must be be released
 #if defined __cplusplus
 }
 #endif // __cplusplus
 #endif //__AVXSYNTH_C__
--- a/compat/avisynth/windowsPorts/basicDataTypeConversions.h
+++ b/compat/avisynth/windowsPorts/basicDataTypeConversions.h
@@ -0,0 +1,85 @@
 #ifndef __DATA_TYPE_CONVERSIONS_H__
 #define __DATA_TYPE_CONVERSIONS_H__
 #include <stdint.h>
 #include <wchar.h>
 #ifdef __cplusplus
 namespace avxsynth {
 #endif // __cplusplus
 typedef int64_t __int64;
 typedef int32_t __int32;
 #ifdef __cplusplus
 typedef bool BOOL;
 #else
 typedef uint32_t BOOL;
 #endif // __cplusplus
 typedef void* HMODULE;
 typedef void* LPVOID;
 typedef void* PVOID;
 typedef PVOID HANDLE;
 typedef HANDLE HWND;
 typedef HANDLE HINSTANCE;
 typedef void* HDC;
 typedef void* HBITMAP;
 typedef void* HICON;
 typedef void* HFONT;
 typedef void* HGDIOBJ;
 typedef void* HBRUSH;
 typedef void* HMMIO;
 typedef void* HACMSTREAM;
 typedef void* HACMDRIVER;
 typedef void* HIC;
 typedef void* HACMOBJ;
 typedef HACMSTREAM* LPHACMSTREAM;
 typedef void* HACMDRIVERID;
 typedef void* LPHACMDRIVER;
 typedef unsigned char BYTE;
 typedef BYTE* LPBYTE;
 typedef char TCHAR;
 typedef TCHAR* LPTSTR;
 typedef const TCHAR* LPCTSTR;
 typedef char* LPSTR;
 typedef LPSTR LPOLESTR;
 typedef const char* LPCSTR;
 typedef LPCSTR LPCOLESTR;
 typedef wchar_t WCHAR;
 typedef unsigned short WORD;
 typedef unsigned int UINT;
 typedef UINT MMRESULT;
 typedef uint32_t DWORD;
 typedef DWORD COLORREF;
 typedef DWORD FOURCC;
 typedef DWORD HRESULT;
 typedef DWORD* LPDWORD;
 typedef DWORD* DWORD_PTR;
 typedef int32_t LONG;
 typedef int32_t* LONG_PTR;
 typedef LONG_PTR LRESULT;
 typedef uint32_t ULONG;
 typedef uint32_t* ULONG_PTR;
 //typedef __int64_t intptr_t;
 typedef uint64_t _fsize_t;
 //
 // Structures
 //
 typedef struct _GUID {
  DWORD Data1;
  WORD  Data2;
  WORD  Data3;
  BYTE  Data4[8];
 } GUID;
 typedef GUID REFIID;
 typedef GUID CLSID;
 typedef CLSID* LPCLSID;
 typedef GUID IID;
 #ifdef __cplusplus
 }; // namespace avxsynth
 #endif // __cplusplus
 #endif //  __DATA_TYPE_CONVERSIONS_H__
--- a/compat/avisynth/windowsPorts/windows2linux.h
+++ b/compat/avisynth/windowsPorts/windows2linux.h
@@ -0,0 +1,77 @@
 #ifndef __WINDOWS2LINUX_H__
 #define __WINDOWS2LINUX_H__
 /*
 * LINUX SPECIFIC DEFINITIONS
 */
 //
 // Data types conversions
 //
 #include <stdlib.h>
 #include <string.h>
 #include "basicDataTypeConversions.h"
 #ifdef __cplusplus
 namespace avxsynth {
 #endif // __cplusplus
 //
 // purposefully define the following MSFT definitions
 // to mean nothing (as they do not mean anything on Linux)
 //
 #define __stdcall
 #define __cdecl
 #define noreturn
 #define __declspec(x)
 #define STDAPI       extern "C" HRESULT
 #define STDMETHODIMP HRESULT __stdcall
 #define STDMETHODIMP_(x) x __stdcall
 #define STDMETHOD(x)    virtual HRESULT x
 #define STDMETHOD_(a, x) virtual a x
 #ifndef TRUE
 #define TRUE  true
 #endif
 #ifndef FALSE
 #define FALSE false
 #endif
 #define S_OK                (0x00000000)
 #define S_FALSE             (0x00000001)
 #define E_NOINTERFACE       (0X80004002)
 #define E_POINTER           (0x80004003)
 #define E_FAIL              (0x80004005)
 #define E_OUTOFMEMORY       (0x8007000E)
 #define INVALID_HANDLE_VALUE    ((HANDLE)((LONG_PTR)-1))
 #define FAILED(hr)              ((hr) & 0x80000000)
 #define SUCCEEDED(hr)           (!FAILED(hr))
 //
 // Functions
 //
 #define MAKEDWORD(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
 #define MAKEWORD(a,b) (((a) << 8) | (b))
 #define lstrlen                             strlen
 #define lstrcpy                             strcpy
 #define lstrcmpi                            strcasecmp
 #define _stricmp                            strcasecmp
 #define InterlockedIncrement(x)             __sync_fetch_and_add((x), 1)
 #define InterlockedDecrement(x)             __sync_fetch_and_sub((x), 1)
 // Windows uses (new, old) ordering but GCC has (old, new)
 #define InterlockedCompareExchange(x,y,z)   __sync_val_compare_and_swap(x,z,y)
 #define UInt32x32To64(a, b)                 ( (uint64_t) ( ((uint64_t)((uint32_t)(a))) * ((uint32_t)(b))  ) )
 #define Int64ShrlMod32(a, b)                ( (uint64_t) ( (uint64_t)(a) >> (b) ) )
 #define Int32x32To64(a, b)                  ((__int64)(((__int64)((long)(a))) * ((long)(b))))
 #define MulDiv(nNumber, nNumerator, nDenominator)   (int32_t) (((int64_t) (nNumber) * (int64_t) (nNumerator) + (int64_t) ((nDenominator)/2)) / (int64_t) (nDenominator))
 #ifdef __cplusplus
 }; // namespace avxsynth
 #endif // __cplusplus
 #endif //  __WINDOWS2LINUX_H__
--- a/compat/cuda/cuda_runtime.h
+++ b/compat/cuda/cuda_runtime.h
@@ -1,189 +0,0 @@
 /*
 * Minimum CUDA compatibility definitions header
 *
 * Copyright (c) 2019 rcombs
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #ifndef COMPAT_CUDA_CUDA_RUNTIME_H
 #define COMPAT_CUDA_CUDA_RUNTIME_H
 // Common macros
 #define __global__ __attribute__((global))
 #define __device__ __attribute__((device))
 #define __device_builtin__ __attribute__((device_builtin))
 #define __align__(N) __attribute__((aligned(N)))
 #define __inline__ __inline__ __attribute__((always_inline))
 #define max(a, b) ((a) > (b) ? (a) : (b))
 #define min(a, b) ((a) < (b) ? (a) : (b))
 #define abs(x) ((x) < 0 ? -(x) : (x))
 #define atomicAdd(a, b) (__atomic_fetch_add(a, b, __ATOMIC_SEQ_CST))
 // Basic typedefs
 typedef __device_builtin__ unsigned long long cudaTextureObject_t;
 typedef struct __device_builtin__ __align__(2) uchar2
 {
    unsigned char x, y;
 } uchar2;
 typedef struct __device_builtin__ __align__(4) ushort2
 {
    unsigned short x, y;
 } ushort2;
 typedef struct __device_builtin__ __align__(8) float2
 {
    float x, y;
 } float2;
 typedef struct __device_builtin__ __align__(8) int2
 {
    int x, y;
 } int2;
 typedef struct __device_builtin__ uint3
 {
    unsigned int x, y, z;
 } uint3;
 typedef struct uint3 dim3;
 typedef struct __device_builtin__ __align__(4) uchar4
 {
    unsigned char x, y, z, w;
 } uchar4;
 typedef struct __device_builtin__ __align__(8) ushort4
 {
    unsigned short x, y, z, w;
 } ushort4;
 typedef struct __device_builtin__ __align__(16) int4
 {
    int x, y, z, w;
 } int4;
 typedef struct __device_builtin__ __align__(16) float4
 {
    float x, y, z, w;
 } float4;
 // Accessors for special registers
 #define GETCOMP(reg, comp) \
    asm("mov.u32 %0, %%" #reg "." #comp ";" : "=r"(tmp)); \
    ret.comp = tmp;
 #define GET(name, reg) static inline __device__ uint3 name() {\
    uint3 ret; \
    unsigned tmp; \
    GETCOMP(reg, x) \
    GETCOMP(reg, y) \
    GETCOMP(reg, z) \
    return ret; \
 }
 GET(getBlockIdx, ctaid)
 GET(getBlockDim, ntid)
 GET(getThreadIdx, tid)
 // Instead of externs for these registers, we turn access to them into calls into trivial ASM
 #define blockIdx (getBlockIdx())
 #define blockDim (getBlockDim())
 #define threadIdx (getThreadIdx())
 // Basic initializers (simple macros rather than inline functions)
 #define make_int2(a, b) ((int2){.x = a, .y = b})
 #define make_uchar2(a, b) ((uchar2){.x = a, .y = b})
 #define make_ushort2(a, b) ((ushort2){.x = a, .y = b})
 #define make_float2(a, b) ((float2){.x = a, .y = b})
 #define make_int4(a, b, c, d) ((int4){.x = a, .y = b, .z = c, .w = d})
 #define make_uchar4(a, b, c, d) ((uchar4){.x = a, .y = b, .z = c, .w = d})
 #define make_ushort4(a, b, c, d) ((ushort4){.x = a, .y = b, .z = c, .w = d})
 #define make_float4(a, b, c, d) ((float4){.x = a, .y = b, .z = c, .w = d})
 // Conversions from the tex instruction's 4-register output to various types
 #define TEX2D(type, ret) static inline __device__ void conv(type* out, unsigned a, unsigned b, unsigned c, unsigned d) {*out = (ret);}
 TEX2D(unsigned char, a & 0xFF)
 TEX2D(unsigned short, a & 0xFFFF)
 TEX2D(float, a)
 TEX2D(uchar2, make_uchar2(a & 0xFF, b & 0xFF))
 TEX2D(ushort2, make_ushort2(a & 0xFFFF, b & 0xFFFF))
 TEX2D(float2, make_float2(a, b))
 TEX2D(uchar4, make_uchar4(a & 0xFF, b & 0xFF, c & 0xFF, d & 0xFF))
 TEX2D(ushort4, make_ushort4(a & 0xFFFF, b & 0xFFFF, c & 0xFFFF, d & 0xFFFF))
 TEX2D(float4, make_float4(a, b, c, d))
 // Template calling tex instruction and converting the output to the selected type
 template<typename T>
 inline __device__ T tex2D(cudaTextureObject_t texObject, float x, float y)
 {
  T ret;
  unsigned ret1, ret2, ret3, ret4;
  asm("tex.2d.v4.u32.f32 {%0, %1, %2, %3}, [%4, {%5, %6}];" :
      "=r"(ret1), "=r"(ret2), "=r"(ret3), "=r"(ret4) :
      "l"(texObject), "f"(x), "f"(y));
  conv(&ret, ret1, ret2, ret3, ret4);
  return ret;
 }
 template<>
 inline __device__ float4 tex2D<float4>(cudaTextureObject_t texObject, float x, float y)
 {
    float4 ret;
    asm("tex.2d.v4.f32.f32 {%0, %1, %2, %3}, [%4, {%5, %6}];" :
        "=r"(ret.x), "=r"(ret.y), "=r"(ret.z), "=r"(ret.w) :
        "l"(texObject), "f"(x), "f"(y));
    return ret;
 }
 template<>
 inline __device__ float tex2D<float>(cudaTextureObject_t texObject, float x, float y)
 {
    return tex2D<float4>(texObject, x, y).x;
 }
 template<>
 inline __device__ float2 tex2D<float2>(cudaTextureObject_t texObject, float x, float y)
 {
    float4 ret = tex2D<float4>(texObject, x, y);
    return make_float2(ret.x, ret.y);
 }
 // Math helper functions
 static inline __device__ float floorf(float a) { return __builtin_floorf(a); }
 static inline __device__ float floor(float a) { return __builtin_floorf(a); }
 static inline __device__ double floor(double a) { return __builtin_floor(a); }
 static inline __device__ float ceilf(float a) { return __builtin_ceilf(a); }
 static inline __device__ float ceil(float a) { return __builtin_ceilf(a); }
 static inline __device__ double ceil(double a) { return __builtin_ceil(a); }
 static inline __device__ float truncf(float a) { return __builtin_truncf(a); }
 static inline __device__ float trunc(float a) { return __builtin_truncf(a); }
 static inline __device__ double trunc(double a) { return __builtin_trunc(a); }
 static inline __device__ float fabsf(float a) { return __builtin_fabsf(a); }
 static inline __device__ float fabs(float a) { return __builtin_fabsf(a); }
 static inline __device__ double fabs(double a) { return __builtin_fabs(a); }
 static inline __device__ float __sinf(float a) { return __nvvm_sin_approx_f(a); }
 static inline __device__ float __cosf(float a) { return __nvvm_cos_approx_f(a); }
 static inline __device__ float __expf(float a) { return __nvvm_ex2_approx_f(a * (float)__builtin_log2(__builtin_exp(1))); }
 #endif /* COMPAT_CUDA_CUDA_RUNTIME_H */
--- a/compat/cuda/dynlink_loader.h
+++ b/compat/cuda/dynlink_loader.h
@@ -1,33 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #ifndef COMPAT_CUDA_DYNLINK_LOADER_H
 #define COMPAT_CUDA_DYNLINK_LOADER_H
 #include "libavutil/log.h"
 #include "compat/w32dlfcn.h"
 #define FFNV_LOAD_FUNC(path) dlopen((path), RTLD_LAZY)
 #define FFNV_SYM_FUNC(lib, sym) dlsym((lib), (sym))
 #define FFNV_FREE_FUNC(lib) dlclose(lib)
 #define FFNV_LOG_FUNC(logctx, msg, ...) av_log(logctx, AV_LOG_ERROR, msg,  __VA_ARGS__)
 #define FFNV_DEBUG_LOG_FUNC(logctx, msg, ...) av_log(logctx, AV_LOG_DEBUG, msg,  __VA_ARGS__)
 #include <ffnvcodec/dynlink_loader.h>
 #endif /* COMPAT_CUDA_DYNLINK_LOADER_H */
--- a/compat/djgpp/math.c
+++ b/compat/djgpp/math.c
@@ -1,47 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #include <math.h>
 #define FUN(name, type, op) \
 type name(type x, type y) \
 { \
    if (fpclassify(x) == FP_NAN) return y; \
    if (fpclassify(y) == FP_NAN) return x; \
    return x op y ? x : y; \
 }
 FUN(fmin, double, <)
 FUN(fmax, double, >)
 FUN(fminf, float, <)
 FUN(fmaxf, float, >)
 long double fmodl(long double x, long double y)
 {
    return fmod(x, y);
 }
 long double scalbnl(long double x, int exp)
 {
    return scalbn(x, exp);
 }
 long double copysignl(long double x, long double y)
 {
    return copysign(x, y);
 }
--- a/compat/djgpp/math.h
+++ b/compat/djgpp/math.h
@@ -1,25 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 double fmin(double, double);
 double fmax(double, double);
 float fminf(float, float);
 float fmaxf(float, float);
 long double fmodl(long double, long double);
 long double scalbnl(long double, int);
 long double copysignl(long double, long double);
--- a/compat/msvcrt/snprintf.c
+++ b/compat/msvcrt/snprintf.c
@@ -59,7 +59,7 @@ int avpriv_vsnprintf(char *s, size_t n, const char *fmt,
     * recommends to provide _snprintf/_vsnprintf() a buffer size that
     * is one less than the actual buffer, and zero it before calling
     * _snprintf/_vsnprintf() to workaround this problem.
-     * See https://web.archive.org/web/20151214111935/http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
+     * See http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
    memset(s, 0, n);
    va_copy(ap_copy, ap);
    ret = _vsnprintf(s, n - 1, fmt, ap_copy);
--- a/compat/os2threads.h
+++ b/compat/os2threads.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011-2017 KO Myung-Hun <komh@chollian.net>
+ * Copyright (c) 2011 KO Myung-Hun <komh@chollian.net>
 *
 * This file is part of FFmpeg.
 *
@@ -27,19 +27,15 @@
 #define COMPAT_OS2THREADS_H
 #define INCL_DOS
 #define INCL_DOSERRORS
 #include <os2.h>
 #undef __STRICT_ANSI__          /* for _beginthread() */
 #include <stdlib.h>
 #include <time.h>
 #include <sys/builtin.h>
 #include <sys/fmutex.h>
 #include "libavutil/attributes.h"
 #include "libavutil/common.h"
 #include "libavutil/time.h"
 typedef struct {
    TID tid;
@@ -50,11 +46,9 @@ typedef struct {
 typedef void pthread_attr_t;
-typedef _fmutex pthread_mutex_t;
+typedef HMTX pthread_mutex_t;
 typedef void pthread_mutexattr_t;
 #define PTHREAD_MUTEX_INITIALIZER _FMUTEX_INITIALIZER
 typedef struct {
    HEV event_sem;
    HEV ack_sem;
@@ -104,28 +98,28 @@ static av_always_inline int pthread_join(pthread_t thread, void **value_ptr)
 static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex,
                                               const pthread_mutexattr_t *attr)
 {
-    _fmutex_create(mutex, 0);
+    DosCreateMutexSem(NULL, (PHMTX)mutex, 0, FALSE);
    return 0;
 }
 static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
 {
-    _fmutex_close(mutex);
+    DosCloseMutexSem(*(PHMTX)mutex);
    return 0;
 }
 static av_always_inline int pthread_mutex_lock(pthread_mutex_t *mutex)
 {
-    _fmutex_request(mutex, 0);
+    DosRequestMutexSem(*(PHMTX)mutex, SEM_INDEFINITE_WAIT);
    return 0;
 }
 static av_always_inline int pthread_mutex_unlock(pthread_mutex_t *mutex)
 {
-    _fmutex_release(mutex);
+    DosReleaseMutexSem(*(PHMTX)mutex);
    return 0;
 }
@@ -167,28 +161,6 @@ static av_always_inline int pthread_cond_broadcast(pthread_cond_t *cond)
    return 0;
 }
 static av_always_inline int pthread_cond_timedwait(pthread_cond_t *cond,
                                                   pthread_mutex_t *mutex,
                                                   const struct timespec *abstime)
 {
    int64_t abs_milli = abstime->tv_sec * 1000LL + abstime->tv_nsec / 1000000;
    ULONG t = av_clip64(abs_milli - av_gettime() / 1000, 0, ULONG_MAX);
    __atomic_increment(&cond->wait_count);
    pthread_mutex_unlock(mutex);
    APIRET ret = DosWaitEventSem(cond->event_sem, t);
    __atomic_decrement(&cond->wait_count);
    DosPostEventSem(cond->ack_sem);
    pthread_mutex_lock(mutex);
    return (ret == ERROR_TIMEOUT) ? ETIMEDOUT : 0;
 }
 static av_always_inline int pthread_cond_wait(pthread_cond_t *cond,
                                              pthread_mutex_t *mutex)
 {
--- a/compat/plan9/head
+++ b/compat/plan9/head
@@ -0,0 +1,10 @@
 #!/bin/sh
 n=10
 case "$1" in
    -n)  n=$2;      shift 2 ;;
    -n*) n=${1#-n}; shift   ;;
 esac
 exec sed ${n}q "$@"
--- a/compat/plan9/main.c
+++ b/compat/plan9/main.c
@@ -1,7 +1,4 @@
 /*
 * DVD subtitle decoding/encoding
 * Copyright (c) 2005 Fabrice Bellard
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
@@ -19,15 +16,19 @@
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
-#include "internal.h"
+int plan9_main(int argc, char **argv);
 #include "libavutil/avstring.h"
 #include <stdlib.h>
-void ff_dvdsub_parse_palette(uint32_t *palette, const char *p)
+#undef main
 int main(int argc, char **argv)
 {
-    for (int i = 0; i < 16; i++) {
+    /* The setfcr() function in lib9 is broken, must use asm. */
-        palette[i] = strtoul(p, (char **)&p, 16);
+#ifdef __i386
-        while (*p == ',' || av_isspace(*p))
+    short fcr;
-            p++;
+    __asm__ volatile ("fstcw        %0 \n"
-    }
+                      "or      $63, %0 \n"
                      "fldcw        %0 \n"
                      : "=m"(fcr));
 #endif
    return plan9_main(argc, argv);
 }
--- a/compat/plan9/printf
+++ b/compat/plan9/printf
@@ -0,0 +1,2 @@
 #!/bin/sh
 exec awk "BEGIN { for (i = 2; i < ARGC; i++) printf \"$1\", ARGV[i] }" "$@"
--- a/compat/strtod.c
+++ b/compat/strtod.c
@@ -25,9 +25,9 @@
 #include "libavutil/avstring.h"
 #include "libavutil/mathematics.h"
-static const char *check_nan_suffix(const char *s)
+static char *check_nan_suffix(char *s)
 {
-    const char *start = s;
+    char *start = s;
    if (*s++ != '(')
        return start;
@@ -44,7 +44,7 @@ double strtod(const char *, char **);
 double avpriv_strtod(const char *nptr, char **endptr)
 {
-    const char *end;
+    char *end;
    double res;
    /* Skip leading spaces */
@@ -81,13 +81,13 @@ double avpriv_strtod(const char *nptr, char **endptr)
               !av_strncasecmp(nptr, "+0x", 3)) {
        /* FIXME this doesn't handle exponents, non-integers (float/double)
         * and numbers too large for long long */
-        res = strtoll(nptr, (char **)&end, 16);
+        res = strtoll(nptr, &end, 16);
    } else {
-        res = strtod(nptr, (char **)&end);
+        res = strtod(nptr, &end);
    }
    if (endptr)
-        *endptr = (char *)end;
+        *endptr = end;
    return res;
 }
--- a/compat/tms470/math.h
+++ b/compat/tms470/math.h
@@ -16,13 +16,15 @@
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
-#ifndef AVUTIL_MIPS_CPU_H
+#ifndef COMPAT_TMS470_MATH_H
-#define AVUTIL_MIPS_CPU_H
+#define COMPAT_TMS470_MATH_H
-#include "libavutil/cpu.h"
+#include_next <math.h>
 #include "libavutil/cpu_internal.h"
-#define have_mmi(flags) CPUEXT(flags, MMI)
+#undef INFINITY
-#define have_msa(flags) CPUEXT(flags, MSA)
+#undef NAN
-#endif /* AVUTIL_MIPS_CPU_H */
+#define INFINITY (*(const float*)((const unsigned []){ 0x7f800000 }))
 #define NAN      (*(const float*)((const unsigned []){ 0x7fc00000 }))
 #endif /* COMPAT_TMS470_MATH_H */
--- a/compat/w32dlfcn.h
+++ b/compat/w32dlfcn.h
@@ -1,94 +0,0 @@
 /*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #ifndef COMPAT_W32DLFCN_H
 #define COMPAT_W32DLFCN_H
 #ifdef _WIN32
 #include <windows.h>
 #include "config.h"
 #if (_WIN32_WINNT < 0x0602) || HAVE_WINRT
 #include "libavutil/wchar_filename.h"
 #endif
 /**
 * Safe function used to open dynamic libs. This attempts to improve program security
 * by removing the current directory from the dll search path. Only dll's found in the
 * executable or system directory are allowed to be loaded.
 * @param name  The dynamic lib name.
 * @return A handle to the opened lib.
 */
 static inline HMODULE win32_dlopen(const char *name)
 {
 #if _WIN32_WINNT < 0x0602
    // Need to check if KB2533623 is available
    if (!GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "SetDefaultDllDirectories")) {
        HMODULE module = NULL;
        wchar_t *path = NULL, *name_w = NULL;
        DWORD pathlen;
        if (utf8towchar(name, &name_w))
            goto exit;
        path = (wchar_t *)av_calloc(MAX_PATH, sizeof(wchar_t));
        // Try local directory first
        pathlen = GetModuleFileNameW(NULL, path, MAX_PATH);
        pathlen = wcsrchr(path, '\\') - path;
        if (pathlen == 0 || pathlen + wcslen(name_w) + 2 > MAX_PATH)
            goto exit;
        path[pathlen] = '\\';
        wcscpy(path + pathlen + 1, name_w);
        module = LoadLibraryExW(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
        if (module == NULL) {
            // Next try System32 directory
            pathlen = GetSystemDirectoryW(path, MAX_PATH);
            if (pathlen == 0 || pathlen + wcslen(name_w) + 2 > MAX_PATH)
                goto exit;
            path[pathlen] = '\\';
            wcscpy(path + pathlen + 1, name_w);
            module = LoadLibraryExW(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
        }
 exit:
        av_free(path);
        av_free(name_w);
        return module;
    }
 #endif
 #ifndef LOAD_LIBRARY_SEARCH_APPLICATION_DIR
 #   define LOAD_LIBRARY_SEARCH_APPLICATION_DIR 0x00000200
 #endif
 #ifndef LOAD_LIBRARY_SEARCH_SYSTEM32
 #   define LOAD_LIBRARY_SEARCH_SYSTEM32        0x00000800
 #endif
 #if HAVE_WINRT
    wchar_t *name_w = NULL;
    int ret;
    if (utf8towchar(name, &name_w))
        return NULL;
    ret = LoadPackagedLibrary(name_w, 0);
    av_free(name_w);
    return ret;
 #else
    return LoadLibraryExA(name, NULL, LOAD_LIBRARY_SEARCH_APPLICATION_DIR | LOAD_LIBRARY_SEARCH_SYSTEM32);
 #endif
 }
 #define dlopen(name, flags) win32_dlopen(name)
 #define dlclose FreeLibrary
 #define dlsym GetProcAddress
 #else
 #include <dlfcn.h>
 #endif
 #endif /* COMPAT_W32DLFCN_H */
--- a/compat/w32pthreads.h
+++ b/compat/w32pthreads.h
@@ -38,13 +38,16 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <process.h>
-#include <time.h>
+
 #if _WIN32_WINNT < 0x0600 && defined(__MINGW32__)
 #undef MemoryBarrier
 #define MemoryBarrier __sync_synchronize
 #endif
 #include "libavutil/attributes.h"
 #include "libavutil/common.h"
 #include "libavutil/internal.h"
 #include "libavutil/mem.h"
 #include "libavutil/time.h"
 typedef struct pthread_t {
    void *handle;
@@ -53,22 +56,28 @@ typedef struct pthread_t {
    void *ret;
 } pthread_t;
-/* use light weight mutex/condition variable API for Windows Vista and later */
+/* the conditional variable api for windows 6.0+ uses critical sections and
-typedef SRWLOCK pthread_mutex_t;
+ * not mutexes */
 typedef CRITICAL_SECTION pthread_mutex_t;
 /* This is the CONDITION_VARIABLE typedef for using Windows' native
 * conditional variables on kernels 6.0+. */
 #if HAVE_CONDITION_VARIABLE_PTR
 typedef CONDITION_VARIABLE pthread_cond_t;
 #else
 typedef struct pthread_cond_t {
    void *Ptr;
 } pthread_cond_t;
 #endif
-#define PTHREAD_MUTEX_INITIALIZER SRWLOCK_INIT
+#if _WIN32_WINNT >= 0x0600
 #define PTHREAD_COND_INITIALIZER CONDITION_VARIABLE_INIT
 #define InitializeCriticalSection(x) InitializeCriticalSectionEx(x, 0, 0)
 #define WaitForSingleObject(a, b) WaitForSingleObjectEx(a, b, FALSE)
-
+#endif
 #define PTHREAD_CANCEL_ENABLE 1
 #define PTHREAD_CANCEL_DISABLE 0
 static av_unused unsigned __stdcall attribute_align_arg win32thread_worker(void *arg)
 {
-    pthread_t *h = (pthread_t*)arg;
+    pthread_t *h = arg;
    h->ret = h->func(h->arg);
    return 0;
 }
@@ -105,25 +114,26 @@ static av_unused int pthread_join(pthread_t thread, void **value_ptr)
 static inline int pthread_mutex_init(pthread_mutex_t *m, void* attr)
 {
-    InitializeSRWLock(m);
+    InitializeCriticalSection(m);
    return 0;
 }
 static inline int pthread_mutex_destroy(pthread_mutex_t *m)
 {
-    /* Unlocked SWR locks use no resources */
+    DeleteCriticalSection(m);
    return 0;
 }
 static inline int pthread_mutex_lock(pthread_mutex_t *m)
 {
-    AcquireSRWLockExclusive(m);
+    EnterCriticalSection(m);
    return 0;
 }
 static inline int pthread_mutex_unlock(pthread_mutex_t *m)
 {
-    ReleaseSRWLockExclusive(m);
+    LeaveCriticalSection(m);
    return 0;
 }
 #if _WIN32_WINNT >= 0x0600
 typedef INIT_ONCE pthread_once_t;
 #define PTHREAD_ONCE_INIT INIT_ONCE_STATIC_INIT
@@ -157,23 +167,7 @@ static inline int pthread_cond_broadcast(pthread_cond_t *cond)
 static inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 {
-    SleepConditionVariableSRW(cond, mutex, INFINITE, 0);
+    SleepConditionVariableCS(cond, mutex, INFINITE);
    return 0;
 }
 static inline int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
                                         const struct timespec *abstime)
 {
    int64_t abs_milli = abstime->tv_sec * 1000LL + abstime->tv_nsec / 1000000;
    DWORD t = av_clip64(abs_milli - av_gettime() / 1000, 0, UINT32_MAX);
    if (!SleepConditionVariableSRW(cond, mutex, t, 0)) {
        DWORD err = GetLastError();
        if (err == ERROR_TIMEOUT)
            return ETIMEDOUT;
        else
            return EINVAL;
    }
    return 0;
 }
@@ -183,9 +177,242 @@ static inline int pthread_cond_signal(pthread_cond_t *cond)
    return 0;
 }
-static inline int pthread_setcancelstate(int state, int *oldstate)
+#else // _WIN32_WINNT < 0x0600
 /* atomic init state of dynamically loaded functions */
 static LONG w32thread_init_state = 0;
 static av_unused void w32thread_init(void);
 /* for pre-Windows 6.0 platforms, define INIT_ONCE struct,
 * compatible to the one used in the native API */
 typedef union pthread_once_t  {
    void * Ptr;    ///< For the Windows 6.0+ native functions
    LONG state;    ///< For the pre-Windows 6.0 compat code
 } pthread_once_t;
 #define PTHREAD_ONCE_INIT {0}
 /* function pointers to init once API on windows 6.0+ kernels */
 static BOOL (WINAPI *initonce_begin)(pthread_once_t *lpInitOnce, DWORD dwFlags, BOOL *fPending, void **lpContext);
 static BOOL (WINAPI *initonce_complete)(pthread_once_t *lpInitOnce, DWORD dwFlags, void *lpContext);
 /* pre-Windows 6.0 compat using a spin-lock */
 static inline void w32thread_once_fallback(LONG volatile *state, void (*init_routine)(void))
 {
    switch (InterlockedCompareExchange(state, 1, 0)) {
    /* Initial run */
    case 0:
        init_routine();
        InterlockedExchange(state, 2);
        break;
    /* Another thread is running init */
    case 1:
        while (1) {
            MemoryBarrier();
            if (*state == 2)
                break;
            Sleep(0);
        }
        break;
    /* Initialization complete */
    case 2:
        break;
    }
 }
 static av_unused int pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
 {
    w32thread_once_fallback(&w32thread_init_state, w32thread_init);
    /* Use native functions on Windows 6.0+ */
    if (initonce_begin && initonce_complete) {
        BOOL pending = FALSE;
        initonce_begin(once_control, 0, &pending, NULL);
        if (pending)
            init_routine();
        initonce_complete(once_control, 0, NULL);
        return 0;
    }
    w32thread_once_fallback(&once_control->state, init_routine);
    return 0;
 }
 /* for pre-Windows 6.0 platforms we need to define and use our own condition
 * variable and api */
 typedef struct  win32_cond_t {
    pthread_mutex_t mtx_broadcast;
    pthread_mutex_t mtx_waiter_count;
    volatile int waiter_count;
    HANDLE semaphore;
    HANDLE waiters_done;
    volatile int is_broadcast;
 } win32_cond_t;
 /* function pointers to conditional variable API on windows 6.0+ kernels */
 static void (WINAPI *cond_broadcast)(pthread_cond_t *cond);
 static void (WINAPI *cond_init)(pthread_cond_t *cond);
 static void (WINAPI *cond_signal)(pthread_cond_t *cond);
 static BOOL (WINAPI *cond_wait)(pthread_cond_t *cond, pthread_mutex_t *mutex,
                                DWORD milliseconds);
 static av_unused int pthread_cond_init(pthread_cond_t *cond, const void *unused_attr)
 {
    win32_cond_t *win32_cond = NULL;
    w32thread_once_fallback(&w32thread_init_state, w32thread_init);
    if (cond_init) {
        cond_init(cond);
        return 0;
    }
    /* non native condition variables */
    win32_cond = av_mallocz(sizeof(win32_cond_t));
    if (!win32_cond)
        return ENOMEM;
    cond->Ptr = win32_cond;
    win32_cond->semaphore = CreateSemaphore(NULL, 0, 0x7fffffff, NULL);
    if (!win32_cond->semaphore)
        return ENOMEM;
    win32_cond->waiters_done = CreateEvent(NULL, TRUE, FALSE, NULL);
    if (!win32_cond->waiters_done)
        return ENOMEM;
    pthread_mutex_init(&win32_cond->mtx_waiter_count, NULL);
    pthread_mutex_init(&win32_cond->mtx_broadcast, NULL);
    return 0;
 }
 static av_unused int pthread_cond_destroy(pthread_cond_t *cond)
 {
    win32_cond_t *win32_cond = cond->Ptr;
    /* native condition variables do not destroy */
    if (cond_init)
        return 0;
    /* non native condition variables */
    CloseHandle(win32_cond->semaphore);
    CloseHandle(win32_cond->waiters_done);
    pthread_mutex_destroy(&win32_cond->mtx_waiter_count);
    pthread_mutex_destroy(&win32_cond->mtx_broadcast);
    av_freep(&win32_cond);
    cond->Ptr = NULL;
    return 0;
 }
 static av_unused int pthread_cond_broadcast(pthread_cond_t *cond)
 {
    win32_cond_t *win32_cond = cond->Ptr;
    int have_waiter;
    if (cond_broadcast) {
        cond_broadcast(cond);
        return 0;
    }
    /* non native condition variables */
    pthread_mutex_lock(&win32_cond->mtx_broadcast);
    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
    have_waiter = 0;
    if (win32_cond->waiter_count) {
        win32_cond->is_broadcast = 1;
        have_waiter = 1;
    }
    if (have_waiter) {
        ReleaseSemaphore(win32_cond->semaphore, win32_cond->waiter_count, NULL);
        pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
        WaitForSingleObject(win32_cond->waiters_done, INFINITE);
        ResetEvent(win32_cond->waiters_done);
        win32_cond->is_broadcast = 0;
    } else
        pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
    pthread_mutex_unlock(&win32_cond->mtx_broadcast);
    return 0;
 }
 static av_unused int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 {
    win32_cond_t *win32_cond = cond->Ptr;
    int last_waiter;
    if (cond_wait) {
        cond_wait(cond, mutex, INFINITE);
        return 0;
    }
    /* non native condition variables */
    pthread_mutex_lock(&win32_cond->mtx_broadcast);
    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
    win32_cond->waiter_count++;
    pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
    pthread_mutex_unlock(&win32_cond->mtx_broadcast);
    // unlock the external mutex
    pthread_mutex_unlock(mutex);
    WaitForSingleObject(win32_cond->semaphore, INFINITE);
    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
    win32_cond->waiter_count--;
    last_waiter = !win32_cond->waiter_count || !win32_cond->is_broadcast;
    pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
    if (last_waiter)
        SetEvent(win32_cond->waiters_done);
    // lock the external mutex
    return pthread_mutex_lock(mutex);
 }
 static av_unused int pthread_cond_signal(pthread_cond_t *cond)
 {
    win32_cond_t *win32_cond = cond->Ptr;
    int have_waiter;
    if (cond_signal) {
        cond_signal(cond);
        return 0;
    }
    pthread_mutex_lock(&win32_cond->mtx_broadcast);
    /* non-native condition variables */
    pthread_mutex_lock(&win32_cond->mtx_waiter_count);
    have_waiter = win32_cond->waiter_count;
    pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
    if (have_waiter) {
        ReleaseSemaphore(win32_cond->semaphore, 1, NULL);
        WaitForSingleObject(win32_cond->waiters_done, INFINITE);
        ResetEvent(win32_cond->waiters_done);
    }
    pthread_mutex_unlock(&win32_cond->mtx_broadcast);
    return 0;
 }
 #endif
 static av_unused void w32thread_init(void)
 {
 #if _WIN32_WINNT < 0x0600
    HANDLE kernel_dll = GetModuleHandle(TEXT("kernel32.dll"));
    /* if one is available, then they should all be available */
    cond_init      =
        (void*)GetProcAddress(kernel_dll, "InitializeConditionVariable");
    cond_broadcast =
        (void*)GetProcAddress(kernel_dll, "WakeAllConditionVariable");
    cond_signal    =
        (void*)GetProcAddress(kernel_dll, "WakeConditionVariable");
    cond_wait      =
        (void*)GetProcAddress(kernel_dll, "SleepConditionVariableCS");
    initonce_begin =
        (void*)GetProcAddress(kernel_dll, "InitOnceBeginInitialize");
    initonce_complete =
        (void*)GetProcAddress(kernel_dll, "InitOnceComplete");
 #endif
 }
 #endif /* COMPAT_W32PTHREADS_H */
--- a/compat/windows/makedef
+++ b/compat/windows/makedef
@@ -45,11 +45,7 @@ libname=$(mktemp -u "library").lib
 trap 'rm -f -- $libname' EXIT
-if [ -n "$AR" ]; then
+lib -out:${libname} $@ >/dev/null
    $AR rcs ${libname} $@ >/dev/null
 else
    lib.exe -out:${libname} $@ >/dev/null
 fi
 if [ $? != 0 ]; then
    echo "Could not create temporary library." >&2
    exit 1
@@ -58,7 +54,23 @@ fi
 IFS='
 '
-prefix="$EXTERN_PREFIX"
+# Determine if we're building for x86 or x86_64 and
 # set the symbol prefix accordingly.
 prefix=""
 arch=$(dumpbin -headers ${libname} |
       tr '\t' ' ' |
       grep '^ \+.\+machine \+(.\+)' |
       head -1 |
       sed -e 's/^ \{1,\}.\{1,\} \{1,\}machine \{1,\}(\(...\)).*/\1/')
 if [ "${arch}" = "x86" ]; then
    prefix="_"
 else
    if [ "${arch}" != "ARM" ] && [ "${arch}" != "x64" ]; then
        echo "Unknown machine type." >&2
        exit 1
    fi
 fi
 started=0
 regex="none"
@@ -100,19 +112,7 @@ for line in $(cat ${vscript} | tr '\t' ' '); do
 '
 done
-if [ -n "$NM" ]; then
+dump=$(dumpbin -linkermember:1 ${libname})
    # Use eval, since NM="nm -g"
    dump=$(eval "$NM --defined-only -g ${libname}" |
              grep -v : |
              grep -v ^$ |
              cut -d' ' -f3 |
              sed -e "s/^${prefix}//")
 else
    dump=$(dumpbin.exe -linkermember:1 ${libname} |
              sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e "s/ \{1,\}${prefix}/ /" -e 's/ \{1,\}/ /g' |
              tail -n +2 |
              cut -d' ' -f3)
 fi
 rm ${libname}
@@ -121,6 +121,9 @@ list=""
 for exp in ${regex}; do
    list="${list}"'
 '$(echo "${dump}" |
          sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e "s/ \{1,\}${prefix}/ /" -e 's/ \{1,\}/ /g' |
          tail -n +2 |
          cut -d' ' -f3 |
          grep "^${exp}" |
          sed -e 's/^/    /')
 done
--- a/compat/windows/mslink
+++ b/compat/windows/mslink
@@ -4,6 +4,6 @@ LINK_EXE_PATH=$(dirname "$(command -v cl)")/link
 if [ -x "$LINK_EXE_PATH" ]; then
    "$LINK_EXE_PATH" $@
 else
-    link.exe $@
+    link $@
 fi
 exit $?
--- a/4801
+++ b/4801
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -2,967 +2,19 @@ Never assume the API of libav* to be stable unless at least 1 month has passed
 since the last major version increase or the API was added.
 The last version increases were:
-libavcodec:    2021-04-27
+libavcodec:    2015-08-28
-libavdevice:   2021-04-27
+libavdevice:   2015-08-28
-libavfilter:   2021-04-27
+libavfilter:   2015-08-28
-libavformat:   2021-04-27
+libavformat:   2015-08-28
-libpostproc:   2021-04-27
+libavresample: 2015-08-28
-libswresample: 2021-04-27
+libpostproc:   2015-08-28
-libswscale:    2021-04-27
+libswresample: 2015-08-28
-libavutil:     2021-04-27
+libswscale:    2015-08-28
 libavutil:     2015-08-28
 API changes, most recent first:
 2022-01-04 - 78dc21b123e - lavu 57.16.100 - frame.h
  Add AV_FRAME_DATA_DOVI_METADATA.
 2022-01-03 - 70f318e6b6c - lavf 59.13.100 - avformat.h
  Add AVFMT_EXPERIMENTAL flag.
 2021-12-22 - b7e1ec7bda9 - lavu 57.13.100 - hwcontext_videotoolbox.h
  Add av_vt_pixbuf_set_attachments
 2021-12-22 - 69bd95dcd8d - lavu 57.13.100 - hwcontext_videotoolbox.h
  Add av_map_videotoolbox_chroma_loc_from_av
  Add av_map_videotoolbox_color_matrix_from_av
  Add av_map_videotoolbox_color_primaries_from_av
  Add av_map_videotoolbox_color_trc_from_av
 2021-12-21 - ffbab99f2c2 - lavu 57.12.100 - cpu.h
  Add AV_CPU_FLAG_SLOW_GATHER.
 2021-12-20 - 278068dc60d - lavu 57.11.101 - display.h
  Modified the documentation of av_display_rotation_set()
  to match its longstanding actual behaviour of treating
  the angle as directed clockwise.
 2021-12-12 - 64834bb86a1 - lavf 59.10.100 - avformat.h
  Add AVFormatContext io_close2 which returns an int
 2021-12-10 - f45cbb775e4 - lavu 57.11.100 - hwcontext_vulkan.h
  Add AVVkFrame.offset and AVVulkanFramesContext.flags.
 2021-12-04 - b9c928a486f - lavfi 8.19.100 - avfilter.h
  Add AVFILTER_FLAG_METADATA_ONLY.
 2021-12-03 - b236ef0a594 - lavu 57.10.100 - frame.h
  Add AVFrame.time_base
 2021-11-22 - b2cd1fb2ec6 - lavu 57.9.100 - pixfmt.h
  Add AV_PIX_FMT_P210, AV_PIX_FMT_P410, AV_PIX_FMT_P216, and AV_PIX_FMT_P416.
 2021-11-17 - 54e65aa38ab - lavf 57.9.100 - frame.h
  Add AV_FRAME_DATA_DOVI_RPU_BUFFER.
 2021-11-16 - ed75a08d36c - lavf 59.9.100 - avformat.h
  Add av_stream_get_class(). Schedule adding AVStream.av_class at libavformat
  major version 60.
  Add av_disposition_to_string() and av_disposition_from_string().
  Add "disposition" AVOption to AVStream's class.
 2021-11-12 - 8478d60d5b5 - lavu 57.8.100 - hwcontext_vulkan.h
  Added AVVkFrame.sem_value, AVVulkanDeviceContext.queue_family_encode_index,
  nb_encode_queues, queue_family_decode_index, and nb_decode_queues.
 2021-10-18 - 682bafdb125 - lavf 59.8.100 - avio.h
  Introduce public bytes_{read,written} statistic fields to AVIOContext.
 2021-10-13 - a5622ed16f8 - lavf 59.7.100 - avio.h
  Deprecate AVIOContext.written. Originally added as a private entry in
  commit 3f75e5116b900f1428aa13041fc7d6301bf1988a, its grouping with
  the comment noting its private state was missed during merging of the field
  from Libav (most likely due to an already existing field in between).
 2021-09-21 - 0760d9153c3 - lavu 57.7.100 - pixfmt.h
  Add AV_PIX_FMT_X2BGR10.
 2021-09-20 - 8d5de914d31 - lavu 57.6.100 - mem.h
  Deprecate av_mallocz_array() as it is identical to av_calloc().
 2021-09-20 - 176b8d785bf - lavc 59.9.100 - avcodec.h
  Deprecate AVCodecContext.sub_text_format and the corresponding
  AVOptions. It is unused since the last major bump.
 2021-09-20 - dd846bc4a91 - lavc 59.8.100 - avcodec.h codec.h
  Deprecate AV_CODEC_FLAG_TRUNCATED and AV_CODEC_CAP_TRUNCATED,
  as they are redundant with parsers.
 2021-09-17 - ccfdef79b13 - lavu 57.5.101 - buffer.h
  Constified the input parameters in av_buffer_replace(), av_buffer_ref(),
  and av_buffer_pool_buffer_get_opaque().
 2021-09-08 - 4f78711f9c2 - lavu 57.5.100 - hwcontext_d3d11va.h
  Add AVD3D11VAFramesContext.texture_infos
 2021-09-06 - 42cd64c1826 - lsws 6.1.100 - swscale.h
  Add AVFrame-based scaling API:
    - sws_scale_frame()
    - sws_frame_start()
    - sws_frame_end()
    - sws_send_slice()
    - sws_receive_slice()
    - sws_receive_slice_alignment()
 2021-09-02 - cbf111059d2 - lavc 59.7.100 - avcodec.h
  Incremented the number of elements of AVCodecParser.codec_ids to seven.
 2021-08-24 - 590a7e02f04 - lavc 59.6.100 - avcodec.h
  Add FF_CODEC_PROPERTY_FILM_GRAIN
 2021-08-20 - 7c5f998196d - lavfi 8.3.100 - avfilter.H
  Add avfilter_filter_pad_count() as a replacement for avfilter_pad_count().
  Deprecate avfilter_pad_count().
 2021-08-17 - 8c53b145993 - lavu 57.4.101 - opt.h
  av_opt_copy() now guarantees that allocated src and dst options
  don't alias each other even on error.
 2021-08-14 - d5de9965ef6 - lavu 57.4.100 - imgutils.h
  Add av_image_copy_plane_uc_from()
 2021-08-02 - a1a0fddfd05 - lavc 59.4.100 - packet.h
  Add AVPacket.opaque, AVPacket.opaque_ref, AVPacket.time_base.
 2021-07-23 - 2dd8acbe800 - lavu 57.3.100 - common.h macros.h
  Move several macros (AV_NE, FFDIFFSIGN, FFMAX, FFMAX3, FFMIN, FFMIN3,
  FFSWAP, FF_ARRAY_ELEMS, MKTAG, MKBETAG) from common.h to macros.h.
 2021-07-22 - e3b5ff17c2e - lavu 57.2.100 - film_grain_params.h
  Add AV_FILM_GRAIN_PARAMS_H274, AVFilmGrainH274Params
 2021-07-19 - c1bf56a526f - lavu 57.1.100 - cpu.h
  Add av_cpu_force_count()
 2021-06-17 - aca923b3653 - lavc 59.2.100 - packet.h
  Add AV_PKT_DATA_DYNAMIC_HDR10_PLUS
 2021-06-09 - 2cccab96f6f - lavf 59.3.100 - avformat.h
  Add pts_wrap_bits to AVStream
 2021-06-10 - 7c9763070d9 - lavc 59.1.100 - avcodec.h codec.h
  Move av_get_profile_name() from avcodec.h to codec.h.
 2021-06-10 - bb3648e6766 - lavc 59.1.100 - avcodec.h codec_par.h
  Move av_get_audio_frame_duration2() from avcodec.h to codec_par.h.
 2021-06-10 - 881db34f6a0 - lavc 59.1.100 - avcodec.h codec_id.h
  Move av_get_bits_per_sample(), av_get_exact_bits_per_sample(),
  avcodec_profile_name(), and av_get_pcm_codec() from avcodec.h
  to codec_id.h.
 2021-06-10 - ff0a96046d8 - lavc 59.1.100 - avcodec.h defs.h
  Add new installed header defs.h. The following definitions are moved
  into it from avcodec.h:
    - AVDiscard
    - AVAudioServiceType
    - AVPanScan
    - AVCPBProperties and av_cpb_properties_alloc()
    - AVProducerReferenceTime
    - av_xiphlacing()
 2021-04-27 - cb3ac722f4 - lavc 59.0.100 - avcodec.h
  Constified AVCodecParserContext.parser.
 2021-04-27 - 8b3e6ce5f4 - lavd 59.0.100 - avdevice.h
  The av_*_device_next API functions now accept and return
  pointers to const AVInputFormat resp. AVOutputFormat.
 2021-04-27 - d7e0d428fa - lavd 59.0.100 - avdevice.h
  avdevice_list_input_sources and avdevice_list_output_sinks now accept
  pointers to const AVInputFormat resp. const AVOutputFormat.
 2021-04-27 - 46dac8cf3d - lavf 59.0.100 - avformat.h
  av_find_best_stream now uses a const AVCodec ** parameter
  for the returned decoder.
 2021-04-27 - 626535f6a1 - lavc 59.0.100 - codec.h
  avcodec_find_encoder_by_name(), avcodec_find_encoder(),
  avcodec_find_decoder_by_name() and avcodec_find_decoder()
  now return a pointer to const AVCodec.
 2021-04-27 - 14fa0a4efb - lavf 59.0.100 - avformat.h
  Constified AVFormatContext.*_codec.
 2021-04-27 - 56450a0ee4 - lavf 59.0.100 - avformat.h
  Constified the pointers to AVInputFormats and AVOutputFormats
  in AVFormatContext, avformat_alloc_output_context2(),
  av_find_input_format(), av_probe_input_format(),
  av_probe_input_format2(), av_probe_input_format3(),
  av_probe_input_buffer2(), av_probe_input_buffer(),
  avformat_open_input(), av_guess_format() and av_guess_codec().
  Furthermore, constified the AVProbeData in av_probe_input_format(),
  av_probe_input_format2() and av_probe_input_format3().
 2021-04-19 - 18af1ea8d1 - lavu 56.74.100 - tx.h
  Add AV_TX_FULL_IMDCT and AV_TX_UNALIGNED.
 2021-04-17 - f1bf465aa0 - lavu 56.73.100 - frame.h detection_bbox.h
  Add AV_FRAME_DATA_DETECTION_BBOXES
 2021-04-06 - 557953a397 - lavf 58.78.100 - avformat.h
  Add avformat_index_get_entries_count(), avformat_index_get_entry(),
  and avformat_index_get_entry_from_timestamp().
 2021-03-21 - a77beea6c8 - lavu 56.72.100 - frame.h
  Deprecated av_get_colorspace_name().
  Use av_color_space_name() instead.
 -------- 8< --------- FFmpeg 4.4 was cut here -------- 8< ---------
 2021-03-19 - e8c0bca6bd - lavu 56.69.100 - adler32.h
  Added a typedef for the type of the Adler-32 checksums
  used by av_adler32_update(). It will be changed to uint32_t
  at the next major bump.
  The type of the parameter for the length of the input buffer
  will also be changed to size_t at the next major bump.
 2021-03-19 - e318438f2f - lavf 58.75.100  - avformat.h
  AVChapter.id will be changed from int to int64_t
  on the next major version bump.
 2021-03-17 - f7db77bd87 - lavc 58.133.100 - codec.h
  Deprecated av_init_packet(). Once removed, sizeof(AVPacket) will
  no longer be a part of the public ABI.
  Deprecated AVPacketList.
 2021-03-16 - 7d09579190 - lavc 58.132.100 - codec.h
  Add AV_CODEC_CAP_OTHER_THREADS as a new name for
  AV_CODEC_CAP_AUTO_THREADS. AV_CODEC_CAP_AUTO_THREADS
  is now deprecated.
 2021-03-12 - 6e7e3a3820 - lavc 58.131.100 - avcodec.h codec.h
  Add a get_encode_buffer callback to AVCodecContext, similar to
  get_buffer2 but for encoders.
  Add avcodec_default_get_encode_buffer().
  Add AV_GET_ENCODE_BUFFER_FLAG_REF.
  Encoders may now be flagged as AV_CODEC_CAP_DR1 capable.
 2021-03-10 - 42e68fe015 - lavf 58.72.100 - avformat.h
  Change AVBufferRef related AVStream function and struct size
  parameter and fields type to size_t at next major bump.
 2021-03-10 - d79e0fe65c - lavc 58.130.100 - packet.h
  Change AVBufferRef related AVPacket function and struct size
  parameter and fields type to size_t at next major bump.
 2021-03-10 - 14040a1d91 - lavu 56.68.100 - buffer.h frame.h
  Change AVBufferRef and relevant AVFrame function and struct size
  parameter and fields type to size_t at next major bump.
 2021-03-04 - a0eec776b6 - lavc 58.128.101 - avcodec.h
  Enable err_recognition to be set for encoders.
 2021-03-03 - 2ff40b98ec - lavf 58.70.100 - avformat.h
  Deprecate AVFMT_FLAG_PRIV_OPT. It will do nothing
  as soon as av_demuxer_open() is removed.
 2021-02-27 - dd9227e48f - lavc 58.126.100 - avcodec.h
  Deprecated avcodec_get_frame_class().
 2021-02-21 - 5ca40d6d94 - lavu 56.66.100 - tx.h
  Add enum AVTXFlags and AVTXFlags.AV_TX_INPLACE
 2021-02-14 - 4f49ca7bbc - lavd 58.12.100 - avdevice.h
  Deprecated avdevice_capabilities_create() and
  avdevice_capabilities_free().
 2021-02-10 - 1bda9bb68a - lavu 56.65.100 - common.h
  Add FFABS64U()
 2021-01-26 - 5dd9567080 - lavu 56.64.100 - common.h
  Add FFABSU()
 2021-01-25 - 56709ca8aa - lavc 58.119.100 - avcodec.h
  Deprecate AVCodecContext.debug_mv, FF_DEBUG_VIS_MV_P_FOR, FF_DEBUG_VIS_MV_B_FOR,
  FF_DEBUG_VIS_MV_B_BACK
 2021-01-11 - ebdd33086a - lavc 58.116.100 - avcodec.h
  Add FF_PROFILE_VVC_MAIN_10 and FF_PROFILE_VVC_MAIN_10_444.
 2020-01-01 - baecaa16c1 - lavu 56.63.100 - video_enc_params.h
  Add AV_VIDEO_ENC_PARAMS_MPEG2
 2020-12-03 - eca12f4d5a - lavu 56.62.100 - timecode.h
  Add av_timecode_init_from_components.
 2020-11-27 - a83098ab03 - lavc 58.114.100 - avcodec.h
  Deprecate AVCodecContext.thread_safe_callbacks. Starting with
  LIBAVCODEC_VERSION_MAJOR=60, user callbacks must always be
  thread-safe when frame threading is used.
 2020-11-25 - d243dd540a - lavc 58.113.100 - avcodec.h
  Adds a new flag AV_CODEC_EXPORT_DATA_FILM_GRAIN for export_side_data.
 2020-11-25 - 4f9ee87253 - lavu 56.61.100 - film_grain_params.h
  Adds a new API for extracting codec film grain parameters as side data.
  Adds a new AVFrameSideDataType entry AV_FRAME_DATA_FILM_GRAIN_PARAMS for it.
 2020-10-28 - f95d9510ff - lavf 58.64.100 - avformat.h
  Add AVSTREAM_EVENT_FLAG_NEW_PACKETS.
 2020-09-28 - 68918d3b7f - lavu 56.60.100 - buffer.h
  Add a av_buffer_replace() convenience function.
 2020-09-13 - 837b6eb90e - lavu 56.59.100 - timecode.h
  Add av_timecode_make_smpte_tc_string2.
 2020-08-21 - 06f2651204 - lavu 56.58.100 - avstring.h
  Deprecate av_d2str(). Use av_asprintf() instead.
 2020-08-04 - 34de0abbe7 - lavu 56.58.100 - channel_layout.h
  Add AV_CH_LAYOUT_22POINT2 together with its newly required pieces:
  AV_CH_TOP_SIDE_LEFT, AV_CH_TOP_SIDE_RIGHT, AV_CH_BOTTOM_FRONT_CENTER,
  AV_CH_BOTTOM_FRONT_LEFT, AV_CH_BOTTOM_FRONT_RIGHT.
 2020-07-23 - 84655b7101 - lavu 56.57.100 - cpu.h
  Add AV_CPU_FLAG_MMI and AV_CPU_FLAG_MSA.
 2020-07-22 - 3a8e927176 - lavu 56.56.100 - imgutils.h
  Add av_image_fill_plane_sizes().
 2020-07-15 - 448a9aaa78 - lavc 58.96.100 - packet.h
  Add AV_PKT_DATA_S12M_TIMECODE.
 2020-06-12 - b09fb030c1 - lavu 56.55.100 - pixdesc.h
  Add AV_PIX_FMT_X2RGB10.
 2020-06-11 - bc8ab084fb - lavu 56.54.100 - frame.h
  Add AV_FRAME_DATA_SEI_UNREGISTERED.
 2020-06-10 - 1b4a98b029 - lavu 56.53.100 - log.h opt.h
  Add av_opt_child_class_iterate() and AVClass.child_class_iterate().
  Deprecate av_opt_child_class_next() and AVClass.child_class_next().
 -------- 8< --------- FFmpeg 4.3 was cut here -------- 8< ---------
 2020-06-05 - ec39c2276a - lavu 56.50.100 - buffer.h
  Passing NULL as alloc argument to av_buffer_pool_init2() is now allowed.
 2020-05-27 - ba6cada92e - lavc 58.88.100 - avcodec.h codec.h
  Move AVCodec-related public API to new header codec.h.
 2020-05-23 - 064b875e89 - lavu 56.49.100 - video_enc_params.h
  Add AV_VIDEO_ENC_PARAMS_H264.
 2020-05-23 - 2e08b39444 - lavu 56.48.100 - hwcontext.h
  Add av_hwdevice_ctx_create_derived_opts.
 2020-05-23 - 6b65c4ec54 - lavu 56.47.100 - rational.h
  Add av_gcd_q().
 2020-05-22 - af9e622776 - lavu 56.46.101 - opt.h
  Add AV_OPT_FLAG_CHILD_CONSTS.
 2020-05-22 - 9d443c3e68 - lavc 58.87.100 - avcodec.h codec_par.h
  Move AVBitstreamFilter-related public API to new header bsf.h.
  Move AVCodecParameters-related public API to new header codec_par.h.
 2020-05-21 - 13b1bbff0b - lavc 58.86.101 - avcodec.h
  Deprecated AV_CODEC_CAP_INTRA_ONLY and AV_CODEC_CAP_LOSSLESS.
 2020-05-17 - 84af196c65 - lavu 56.46.100 - common.h
  Add av_sat_add64() and av_sat_sub64()
 2020-05-12 - 991d417692 - lavu 56.45.100 - video_enc_params.h
                          lavc 58.84.100 - avcodec.h
  Add a new API for exporting video encoding information.
  Replaces the deprecated API for exporting QP tables from decoders.
  Add AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS to request this information from
  decoders.
 2020-05-10 - dccd07f66d - lavu 56.44.100 - hwcontext_vulkan.h
  Add enabled_inst_extensions, num_enabled_inst_extensions, enabled_dev_extensions
  and num_enabled_dev_extensions fields to AVVulkanDeviceContext
 2020-04-22 - 0e1db79e37 - lavc 58.81.100 - packet.h
                        - lavu 56.43.100 - dovi_meta.h
  Add AV_PKT_DATA_DOVI_CONF and AVDOVIDecoderConfigurationRecord.
 2020-04-15 - 22b25b3ea5 - lavc 58.79.100 - avcodec.h
  Add formal support for calling avcodec_flush_buffers() on encoders.
  Encoders that set the cap AV_CODEC_CAP_ENCODER_FLUSH will be flushed.
  For all other encoders, the call is now a no-op rather than undefined
  behaviour.
 2020-04-10 - 672946c7fe - lavc 58.78.100 - avcodec.h codec_desc.h codec_id.h packet.h
  Move AVCodecDesc-related public API to new header codec_desc.h.
  Move AVCodecID enum to new header codec_id.h.
  Move AVPacket-related public API to new header packet.h.
 2020-03-29 - 4cb0dda555 - lavf 58.42.100 - avformat.h
  av_read_frame() now guarantees to handle uninitialized input packets
  and to return refcounted packets on success.
 2020-03-27 - c52ec0367d - lavc 58.77.100 - avcodec.h
  av_packet_ref() now guarantees to return the destination packet
  in a blank state on error.
 2020-03-10 - 05d27f342b - lavc 58.75.100 - avcodec.h
  Add AV_PKT_DATA_ICC_PROFILE.
 2020-02-21 - d005a7cdfd - lavc 58.73.101 - avcodec.h
  Add AV_CODEC_EXPORT_DATA_PRFT.
 2020-02-21 - c666689491 - lavc 58.73.100 - avcodec.h
  Add AVCodecContext.export_side_data and AV_CODEC_EXPORT_DATA_MVS.
 2020-02-13 - e8f054b095 - lavu 56.41.100 - tx.h
  Add AV_TX_INT32_FFT and AV_TX_INT32_MDCT
 2020-02-12 - 3182114f88 - lavu 56.40.100 - log.h
  Add av_log_once().
 2020-02-04 - a88449ffb2 - lavu 56.39.100 - hwcontext.h
  Add AV_PIX_FMT_VULKAN
  Add AV_HWDEVICE_TYPE_VULKAN and implementation.
 2020-01-30 - 27529eeb27 - lavf 58.37.100 - avio.h
  Add avio_protocol_get_class().
 2020-01-15 - 717b2074ec - lavc 58.66.100 - avcodec.h
  Add AV_PKT_DATA_PRFT and AVProducerReferenceTime.
 2019-12-27 - 45259a0ee4 - lavu 56.38.100 - eval.h
  Add av_expr_count_func().
 2019-12-26 - 16685114d5 - lavu 56.37.100 - buffer.h
  Add av_buffer_pool_buffer_get_opaque().
 2019-11-17 - 1c23abc88f - lavu 56.36.100 - eval API
  Add av_expr_count_vars().
 2019-10-14 - f3746d31f9 - lavu 56.35.101 - opt.h
  Add AV_OPT_FLAG_RUNTIME_PARAM.
 2019-09-25 - f8406ab4b9 - lavc 58.59.100 - avcodec.h
  Add max_samples
 2019-09-04 - 2a9d461abc - lavu 56.35.100 - hwcontext_videotoolbox.h
  Add av_map_videotoolbox_format_from_pixfmt2() for full range pixfmt
 2019-09-01 - 8821d1f56e - lavu 56.34.100 - pixfmt.h
  Add EBU Tech. 3213-E AVColorPrimaries value
 2019-08-17 - 95fa73a2b4 - lavf 58.31.101 - avio.h
  4K limit removed from avio_printf.
 2019-08-17 - a82f8f2f10 - lavf 58.31.100 - avio.h
  Add avio_print_string_array and avio_print.
 2019-07-27 - 42e2319ba9 - lavu 56.33.100 - tx.h
  Add AV_TX_DOUBLE_FFT and AV_TX_DOUBLE_MDCT
 -------- 8< --------- FFmpeg 4.2 was cut here -------- 8< ---------
 2019-06-21 - a30e44098a - lavu 56.30.100 - frame.h
  Add FF_DECODE_ERROR_DECODE_SLICES
 2019-06-14 - edfced8c04 - lavu 56.29.100 - frame.h
  Add FF_DECODE_ERROR_CONCEALMENT_ACTIVE
 2019-05-15 - b79b29ddb1 - lavu 56.28.100 - tx.h
  Add av_tx_init(), av_tx_uninit() and related definitions.
 2019-04-20 - 3153a6502a - lavc 58.52.100 - avcodec.h
  Add AV_CODEC_FLAG_DROPCHANGED to allow avcodec_receive_frame to drop
  frames whose parameters differ from first decoded frame in stream.
 2019-04-12 - abfeba9724 - lavf 58.27.102
  Rename hls,applehttp demuxer to hls
 2019-01-27 - 5bcefceec8 - lavc 58.46.100 - avcodec.h
  Add discard_damaged_percentage
 2019-01-08 - 1ef4828276 - lavu 56.26.100 - frame.h
  Add AV_FRAME_DATA_REGIONS_OF_INTEREST
 2018-12-21 - 2744d6b364 - lavu 56.25.100 - hdr_dynamic_metadata.h
  Add AV_FRAME_DATA_DYNAMIC_HDR_PLUS enum value, av_dynamic_hdr_plus_alloc(),
  av_dynamic_hdr_plus_create_side_data() functions, and related structs.
 -------- 8< --------- FFmpeg 4.1 was cut here -------- 8< ---------
 2018-10-27 - 718044dc19 - lavu 56.21.100 - pixdesc.h
  Add av_read_image_line2(), av_write_image_line2()
 2018-10-24 - f9d4126f28 - lavu 56.20.100 - frame.h
  Add AV_FRAME_DATA_S12M_TIMECODE
 2018-10-11 - f6d48b618a - lavc 58.33.100 - mediacodec.h
  Add av_mediacodec_render_buffer_at_time().
 2018-09-09 - 35498c124a - lavc 58.29.100 - avcodec.h
  Add AV_PKT_DATA_AFD
 2018-08-16 - b33f5299a5 - lavc 58.23.100 - avcodec.h
  Add av_bsf_flush().
 2018-05-18 - 2b2f2f65f3 - lavf 58.15.100 - avformat.h
  Add pmt_version field to AVProgram
 2018-05-17 - 5dfeb7f081 - lavf 58.14.100 - avformat.h
  Add AV_DISPOSITION_STILL_IMAGE
 2018-05-10 - c855683427 - lavu 56.18.101 - hwcontext_cuda.h
  Add AVCUDADeviceContext.stream.
 2018-04-30 - 56b081da57 - lavu 56.18.100 - pixdesc.h
  Add AV_PIX_FMT_FLAG_ALPHA to AV_PIX_FMT_PAL8.
 2018-04-26 - 5be0410cb3 - lavu 56.17.100 - opt.h
  Add AV_OPT_FLAG_DEPRECATED.
 2018-04-26 - 71fa82bed6 - lavu 56.16.100 - threadmessage.h
  Add av_thread_message_queue_nb_elems().
 -------- 8< --------- FFmpeg 4.0 was cut here -------- 8< ---------
 2018-04-03 - d6fc031caf - lavu 56.13.100 - pixdesc.h
  Deprecate AV_PIX_FMT_FLAG_PSEUDOPAL and make allocating a pseudo palette
  optional for API users (see AV_PIX_FMT_FLAG_PSEUDOPAL doxygen for details).
 2018-04-01 - 860086ee16 - lavc 58.17.100 - avcodec.h
  Add av_packet_make_refcounted().
 2018-04-01 - f1805d160d - lavfi 7.14.100 - avfilter.h
  Deprecate use of avfilter_register(), avfilter_register_all(),
  avfilter_next(). Add av_filter_iterate().
 2018-03-25 - b7d0d912ef - lavc 58.16.100 - avcodec.h
  Add FF_SUB_CHARENC_MODE_IGNORE.
 2018-03-23 - db2a7c947e - lavu 56.12.100 - encryption_info.h
  Add AVEncryptionInitInfo and AVEncryptionInfo structures to hold new side-data
  for encryption info.
 2018-03-21 - f14ca60001 - lavc 58.15.100 - avcodec.h
  Add av_packet_make_writable().
 2018-03-18 - 4b86ac27a0 - lavu 56.11.100 - frame.h
  Add AV_FRAME_DATA_QP_TABLE_PROPERTIES and AV_FRAME_DATA_QP_TABLE_DATA.
 2018-03-15 - e0e72539cf - lavu 56.10.100 - opt.h
  Add AV_OPT_FLAG_BSF_PARAM
 2018-03-07 - 950170bd3b - lavu 56.9.100 - crc.h
  Add AV_CRC_8_EBU crc variant.
 2018-03-07 - 2a0eb86857 - lavc 58.14.100 - mediacodec.h
  Change the default behavior of avcodec_flush() on mediacodec
  video decoders. To restore the previous behavior, use the new
  delay_flush=1 option.
 2018-03-01 - 6731f60598 - lavu 56.8.100 - frame.h
  Add av_frame_new_side_data_from_buf().
 2018-02-15 - 8a8d0b319a
  Change av_ripemd_update(), av_murmur3_update() and av_hash_update() length
  parameter type to size_t at next major bump.
 2018-02-12 - bcab11a1a2 - lavfi 7.12.100 - avfilter.h
  Add AVFilterContext.extra_hw_frames.
 2018-02-12 - d23fff0d8a - lavc 58.11.100 - avcodec.h
  Add AVCodecContext.extra_hw_frames.
 2018-02-06 - 0694d87024 - lavf 58.9.100 - avformat.h
  Deprecate use of av_register_input_format(), av_register_output_format(),
  av_register_all(), av_iformat_next(), av_oformat_next().
  Add av_demuxer_iterate(), and av_muxer_iterate().
 2018-02-06 - 36c85d6e77 - lavc 58.10.100 - avcodec.h
  Deprecate use of avcodec_register(), avcodec_register_all(),
  av_codec_next(), av_register_codec_parser(), and av_parser_next().
  Add av_codec_iterate() and av_parser_iterate().
 2018-02-04 - ff46124b0d - lavf 58.8.100 - avformat.h
  Deprecate the current names of the RTSP "timeout", "stimeout", "user-agent"
  options. Introduce "listen_timeout" as replacement for the current "timeout"
  option, and "user_agent" as replacement for "user-agent". Once the deprecation
  is over, the old "timeout" option will be removed, and "stimeout" will be
  renamed to "stimeout" (the "timeout" option will essentially change semantics).
 2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
  Deprecate AVFormatContext filename field which had limited length, use the
  new dynamically allocated url field instead.
 2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
  Add url field to AVFormatContext and add ff_format_set_url helper function.
 2018-01-27 - 6194d7e564 - lavf 58.6.100 - avformat.h
  Add AVFMTCTX_UNSEEKABLE (for HLS demuxer).
 2018-01-23 - 9f07cf7c00 - lavu 56.9.100 - aes_ctr.h
  Add method to set the 16-byte IV.
 2018-01-16 - 631c56a8e4 - lavf 58.5.100 - avformat.h
  Explicitly make avformat_network_init() and avformat_network_deinit() optional.
  If these are not called, network initialization and deinitialization is
  automatic, and unlike in older versions, fully supported, unless libavformat
  is linked to ancient GnuTLS and OpenSSL.
 2018-01-16 - 6512ff72f9 - lavf 58.4.100 - avformat.h
  Deprecate AVStream.recommended_encoder_configuration. It was useful only for
  FFserver, which has been removed.
 2018-01-05 - 798dcf2432 - lavfi 7.11.101 - avfilter.h
  Deprecate avfilter_link_get_channels(). Use av_buffersink_get_channels().
 2017-01-04 - c29038f304 - lavr 4.0.0 - avresample.h
  Deprecate the entire library. Merged years ago to provide compatibility
  with Libav, it remained unmaintained by the FFmpeg project and duplicated
  functionality provided by libswresample.
  In order to improve consistency and reduce attack surface, it has been deprecated.
  Users of this library are asked to migrate to libswresample, which, as well as
  providing more functionality, is faster and has higher accuracy.
 2017-12-26 - a04c2c707d - lavc 58.9.100 - avcodec.h
  Deprecate av_lockmgr_register(). You need to build FFmpeg with threading
  support enabled to get basic thread-safety (which is the default build
  configuration).
 2017-12-24 - 8b81eabe57 - lavu 56.7.100 - cpu.h
  AVX-512 flags added.
 2017-12-16 - 8bf4e6d3ce - lavc 58.8.100 - avcodec.h
  The MediaCodec decoders now support AVCodecContext.hw_device_ctx.
 2017-12-16 - e4d9f05ca7 - lavu 56.6.100 - hwcontext.h hwcontext_mediacodec.h
  Add AV_HWDEVICE_TYPE_MEDIACODEC and a new installed header with
  MediaCodec-specific hwcontext definitions.
 2017-12-14 - b945fed629 - lavc 58.7.100 - avcodec.h
  Add AV_CODEC_CAP_HARDWARE, AV_CODEC_CAP_HYBRID, and AVCodec.wrapper_name,
  and mark all AVCodecs accordingly.
 2017-11-29 - d268094f88 - lavu 56.4.100 / 56.7.0 - stereo3d.h
  Add view field to AVStereo3D structure and AVStereo3DView enum.
 2017-11-26 - 3a71bcc213 - lavc 58.6.100 - avcodec.h
  Add const to AVCodecContext.hwaccel.
 2017-11-26 - 3536a3efb9 - lavc 58.5.100 - avcodec.h
  Deprecate user visibility of the AVHWAccel structure and the functions
  av_register_hwaccel() and av_hwaccel_next().
 2017-11-26 - 24cc0a53e9 - lavc 58.4.100 - avcodec.h
  Add AVCodecHWConfig and avcodec_get_hw_config().
 2017-11-22 - 3650cb2dfa - lavu 56.3.100 - opencl.h
  Remove experimental OpenCL API (av_opencl_*).
 2017-11-22 - b25d8ef0a7 - lavu 56.2.100 - hwcontext.h hwcontext_opencl.h
  Add AV_HWDEVICE_TYPE_OPENCL and a new installed header with
  OpenCL-specific hwcontext definitions.
 2017-11-22 - a050f56c09 - lavu 56.1.100 - pixfmt.h
  Add AV_PIX_FMT_OPENCL.
 2017-11-11 - 48e4eda11d - lavc 58.3.100 - avcodec.h
  Add avcodec_get_hw_frames_parameters().
 -------- 8< --------- FFmpeg 3.4 was cut here -------- 8< ---------
 2017-09-28 - b6cf66ae1c - lavc 57.106.104 - avcodec.h
  Add AV_PKT_DATA_A53_CC packet side data, to export closed captions
 2017-09-27 - 7aa6b8a68f - lavu 55.77.101 / lavu 55.31.1 - frame.h
  Allow passing the value of 0 (meaning "automatic") as the required alignment
  to av_frame_get_buffer().
 2017-09-27 - 522f877086 - lavu 55.77.100 / lavu 55.31.0 - cpu.h
  Add av_cpu_max_align() for querying maximum required data alignment.
 2017-09-26 - b1cf151c4d - lavc 57.106.102 - avcodec.h
  Deprecate AVCodecContext.refcounted_frames. This was useful for deprecated
  API only (avcodec_decode_video2/avcodec_decode_audio4). The new decode APIs
  (avcodec_send_packet/avcodec_receive_frame) always work with reference
  counted frames.
 2017-09-21 - 6f15f1cdc8 - lavu 55.76.100 / 56.6.0 - pixdesc.h
  Add av_color_range_from_name(), av_color_primaries_from_name(),
  av_color_transfer_from_name(), av_color_space_from_name(), and
  av_chroma_location_from_name().
 2017-09-13 - 82342cead1 - lavc 57.106.100 - avcodec.h
  Add AV_PKT_FLAG_TRUSTED.
 2017-09-13 - 9cb23cd9fe - lavu 55.75.100 - hwcontext.h hwcontext_drm.h
  Add AV_HWDEVICE_TYPE_DRM and implementation.
 2017-09-08 - 5ba2aef6ec - lavfi 6.103.100 - buffersrc.h
  Add av_buffersrc_close().
 2017-09-04 - 6cadbb16e9 - lavc 57.105.100 - avcodec.h
  Add AV_HWACCEL_CODEC_CAP_EXPERIMENTAL, replacing the deprecated
  HWACCEL_CODEC_CAP_EXPERIMENTAL flag.
 2017-09-01 - 5d76674756 - lavf 57.81.100 - avio.h
  Add avio_read_partial().
 2017-09-01 - xxxxxxx - lavf 57.80.100 / 57.11.0 - avio.h
  Add avio_context_free(). From now on it must be used for freeing AVIOContext.
 2017-08-08 - 1460408703 - lavu 55.74.100 - pixdesc.h
  Add AV_PIX_FMT_FLAG_FLOAT pixel format flag.
 2017-08-08 - 463b81de2b - lavu 55.72.100 - imgutils.h
  Add av_image_fill_black().
 2017-08-08 - caa12027ba - lavu 55.71.100 - frame.h
  Add av_frame_apply_cropping().
 2017-07-25 - 24de4fddca - lavu 55.69.100 - frame.h
  Add AV_FRAME_DATA_ICC_PROFILE side data type.
 2017-06-27 - 70143a3954 - lavc 57.100.100 - avcodec.h
  DXVA2 and D3D11 hardware accelerated decoding now supports the new hwaccel API,
  which can create the decoder context and allocate hardware frame automatically.
  See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx. For D3D11,
  the new AV_PIX_FMT_D3D11 pixfmt must be used with the new API.
 2017-06-27 - 3303511f33 - lavu 56.67.100 - hwcontext.h
  Add AV_HWDEVICE_TYPE_D3D11VA and AV_PIX_FMT_D3D11.
 2017-06-24 - 09891c5391 - lavf 57.75.100 - avio.h
  Add AVIO_DATA_MARKER_FLUSH_POINT to signal preferred flush points to aviobuf.
 2017-06-14 - d59c6a3aeb - lavu 55.66.100 - hwcontext.h
  av_hwframe_ctx_create_derived() now takes some AV_HWFRAME_MAP_* combination
  as its flags argument (which was previously unused).
 2017-06-14 - 49ae8a5e87 - lavc 57.99.100 - avcodec.h
  Add AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH.
 2017-06-14 - 0b1794a43e - lavu 55.65.100 - hwcontext.h
  Add AV_HWDEVICE_TYPE_NONE, av_hwdevice_find_type_by_name(),
  av_hwdevice_get_type_name() and av_hwdevice_iterate_types().
 2017-06-14 - b22172f6f3 - lavu 55.64.100 - hwcontext.h
  Add av_hwdevice_ctx_create_derived().
 2017-05-15 - 532b23f079 - lavc 57.96.100 - avcodec.h
  VideoToolbox hardware-accelerated decoding now supports the new hwaccel API,
  which can create the decoder context and allocate hardware frames automatically.
  See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx.
 2017-05-15 - 532b23f079 - lavu 57.63.100 - hwcontext.h
  Add AV_HWDEVICE_TYPE_VIDEOTOOLBOX and implementation.
 2017-05-08 - f089e02fa2 - lavc 57.95.100 / 57.31.0 - avcodec.h
  Add AVCodecContext.apply_cropping to control whether cropping
  is handled by libavcodec or the caller.
 2017-05-08 - a47bd5d77e - lavu 55.62.100 / 55.30.0 - frame.h
  Add AVFrame.crop_left/right/top/bottom fields for attaching cropping
  information to video frames.
 2017-xx-xx - xxxxxxxxxx
  Change av_sha_update(), av_sha512_update() and av_md5_sum()/av_md5_update() length
  parameter type to size_t at next major bump.
 2017-05-05 - c0f17a905f - lavc 57.94.100 - avcodec.h
  The cuvid decoders now support AVCodecContext.hw_device_ctx, which removes
  the requirement to set an incomplete AVCodecContext.hw_frames_ctx only to
  set the Cuda device handle.
 2017-04-11 - 8378466507 - lavu 55.61.100 - avstring.h
  Add av_strireplace().
 2016-04-06 - 157e57a181 - lavc 57.92.100 - avcodec.h
  Add AV_PKT_DATA_CONTENT_LIGHT_LEVEL packet side data.
 2016-04-06 - b378f5bd64 - lavu 55.60.100 - mastering_display_metadata.h
  Add AV_FRAME_DATA_CONTENT_LIGHT_LEVEL value, av_content_light_metadata_alloc()
  and av_content_light_metadata_create_side_data() API, and AVContentLightMetadata
  type to export content light level video properties.
 2017-03-31 - 9033e8723c - lavu 55.57.100 - spherical.h
  Add av_spherical_projection_name().
  Add av_spherical_from_name().
 2017-03-30 - 4cda23f1f1 - lavu 55.53.100 / 55.27.0 - hwcontext.h
  Add av_hwframe_map() and associated AV_HWFRAME_MAP_* flags.
  Add av_hwframe_ctx_create_derived().
 2017-03-29 - bfdcdd6d82 - lavu 55.52.100 - avutil.h
  add av_fourcc_make_string() function and av_fourcc2str() macro to replace
  av_get_codec_tag_string() from lavc.
 2017-03-27 - ddef3d902f - lavf 57.68.100 - avformat.h
  Deprecate that demuxers export the stream rotation angle in AVStream.metadata
  (via an entry named "rotate"). Use av_stream_get_side_data() with
  AV_PKT_DATA_DISPLAYMATRIX instead, and read the rotation angle with
  av_display_rotation_get(). The same is done for muxing. Instead of adding a
  "rotate" entry to AVStream.metadata, AV_PKT_DATA_DISPLAYMATRIX side data has
  to be added to the AVStream.
 2017-03-23 - 7e4ba776a2 - lavc 57.85.101 - avcodec.h
  vdpau hardware accelerated decoding now supports the new hwaccel API, which
  can create the decoder context and allocate hardware frame automatically.
  See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx.
 2017-03-23 - 156bd8278f - lavc 57.85.100 - avcodec.h
  Add AVCodecContext.hwaccel_flags field. This will control some hwaccels at
  a later point.
 2017-03-21 - fc9f14c7de - lavf 57.67.100 / 57.08.0 - avio.h
  Add AVIO_SEEKABLE_TIME flag.
 2017-03-21 - d682ae70b4 - lavf 57.66.105, lavc 57.83.101 - avformat.h, avcodec.h
  Deprecate AVFMT_FLAG_KEEP_SIDE_DATA. It will be ignored after the next major
  bump, and libavformat will behave as if it were always set.
  Deprecate av_packet_merge_side_data() and av_packet_split_side_data().
 2016-03-20 - 8200b16a9c - lavu 55.50.100 / 55.21.0 - imgutils.h
  Add av_image_copy_uc_from(), a version of av_image_copy() for copying
  from GPU mapped memory.
 2017-03-20 - 9c2436e - lavu 55.49.100 - pixdesc.h
  Add AV_PIX_FMT_FLAG_BAYER pixel format flag.
 2017-03-18 - 3796fb2692 - lavfi 6.77.100 - avfilter.h
  Deprecate AVFilterGraph.resample_lavr_opts
  It's never been used by avfilter nor passed to anything.
 2017-02-10 - 1b7ffddb3a - lavu 55.48.100 / 55.33.0 - spherical.h
  Add AV_SPHERICAL_EQUIRECTANGULAR_TILE, av_spherical_tile_bounds(),
  and projection-specific properties (bound_left, bound_top, bound_right,
  bound_bottom, padding) to AVSphericalMapping.
 2017-03-02 - ade7c1a232 - lavc 57.81.104 - videotoolbox.h
  AVVideotoolboxContext.cv_pix_fmt_type can now be set to 0 to output the
  native decoder format. (The default value is not changed.)
 2017-03-02 - 554bc4eea8 - lavu 55.47.101, lavc 57.81.102, lavf 57.66.103
  Remove requirement to use AVOption or accessors to access certain fields
  in AVFrame, AVCodecContext, and AVFormatContext that were previously
  documented as "no direct access" allowed.
 2017-02-13 - c1a5fca06f - lavc 57.80.100 - avcodec.h
  Add AVCodecContext.hw_device_ctx.
 2017-02-11 - e3af49b14b - lavu 55.47.100 - frame.h
  Add AVFrame.opaque_ref.
 2017-01-31 - 2eab48177d - lavu 55.46.100 / 55.20.0 - cpu.h
  Add AV_CPU_FLAG_SSSE3SLOW.
 2017-01-24 - c4618f842a - lavu 55.45.100 - channel_layout.h
  Add av_get_extended_channel_layout()
 2017-01-22 - 76c5a69e26 - lavu 55.44.100 - lfg.h
  Add av_lfg_init_from_data().
 2017-01-17 - 2a4a8653b6 - lavc 57.74.100 - vaapi.h
  Deprecate struct vaapi_context and the vaapi.h installed header.
  Callers should set AVCodecContext.hw_frames_ctx instead.
 2017-01-12 - dbe9dbed31 - lavfi 6.69.100 - buffersink.h
  Add av_buffersink_get_*() functions.
 2017-01-06 - 9488032e10 - lavf 57.62.100 - avio.h
  Add avio_get_dyn_buf()
 2016-12-10 - f542b152aa - lavu 55.43.100 - imgutils.h
  Add av_image_check_size2()
 2016-12-07 - e7a6f8c972 - lavc 57.67.100 / 57.29.0 - avcodec.h
  Add AV_PKT_DATA_SPHERICAL packet side data to export AVSphericalMapping
  information from containers.
 2016-12-07 - 8f58ecc344 - lavu 55.42.100 / 55.30.0 - spherical.h
  Add AV_FRAME_DATA_SPHERICAL value, av_spherical_alloc() API and
  AVSphericalMapping type to export and describe spherical video properties.
 2016-11-18 - 2ab50647ff - lavf 57.58.100 - avformat.h
  Add av_stream_add_side_data().
 2016-11-13 - 775a8477b7 - lavu 55.39.100 - hwcontext_vaapi.h
  Add AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE.
 2016-11-13 - a8d51bb424 - lavu 55.38.100 - hwcontext_vaapi.h
  Add driver quirks field to VAAPI-specific hwdevice and enum with
  members AV_VAAPI_DRIVER_QUIRK_* to represent its values.
 2016-11-10 - 638b216d4f - lavu 55.36.100 - pixfmt.h
  Add AV_PIX_FMT_GRAY12(LE/BE).
 -------- 8< --------- FFmpeg 3.2 was cut here -------- 8< ---------
 2016-10-24 - 73ead47 - lavf 57.55.100 - avformat.h
  Add AV_DISPOSITION_TIMED_THUMBNAILS
 2016-10-24 - a246fef - lavf 57.54.100 - avformat.h
  Add avformat_init_output() and AVSTREAM_INIT_IN_ macros
 2016-10-22 - f5495c9 - lavu 55.33.100 - avassert.h
  Add av_assert0_fpu() / av_assert2_fpu()
 2016-10-07 - 3f9137c / 32c8359 - lavc 57.61.100 / 57.24.0 - avcodec.h
  Decoders now export the frame timestamp as AVFrame.pts. It was
  previously exported as AVFrame.pkt_pts, which is now deprecated.
  Note: When decoding, AVFrame.pts uses the stream/packet timebase,
  and not the codec timebase.
 2016-09-28 - eba0414 - lavu 55.32.100 / 55.16.0 - hwcontext.h hwcontext_qsv.h
  Add AV_HWDEVICE_TYPE_QSV and a new installed header with QSV-specific
  hwcontext definitions.
 2016-09-26 - 32c25f0 - lavc 57.59.100 / 57.23.0 - avcodec.h
  AVCodecContext.hw_frames_ctx now may be used by decoders.
 2016-09-27 - f0b6f72 - lavf 57.51.100 - avformat.h
  Add av_stream_get_codec_timebase()
 2016-09-27 - 23c0779 - lswr 2.2.100 - swresample.h
  Add swr_build_matrix().
 2016-09-23 - 30d3e36 - lavc 57.58.100 - avcodec.h
  Add AV_CODEC_CAP_AVOID_PROBING codec capability flag.
 2016-09-14 - ae1dd0c - lavf 57.49.100 - avformat.h
  Add avformat_transfer_internal_stream_timing_info helper to help with stream
  copy.
 2016-08-29 - 4493390 - lavfi 6.58.100 - avfilter.h
  Add AVFilterContext.nb_threads.
 2016-08-15 - c3c4c72 - lavc 57.53.100 - avcodec.h
  Add trailing_padding to AVCodecContext to match the corresponding
  field in AVCodecParameters.
 2016-08-15 - b746ed7 - lavc 57.52.100 - avcodec.h
  Add a new API for chained BSF filters and passthrough (null) BSF --
  av_bsf_list_alloc(), av_bsf_list_free(), av_bsf_list_append(),
  av_bsf_list_append2(), av_bsf_list_finalize(), av_bsf_list_parse_str()
  and av_bsf_get_null_filter().
 2016-08-04 - 82a33c8 - lavf 57.46.100 - avformat.h
  Add av_get_frame_filename2()
 2016-07-09 - 775389f / 90f469a - lavc 57.50.100 / 57.20.0 - avcodec.h
  Add FF_PROFILE_H264_MULTIVIEW_HIGH and FF_PROFILE_H264_STEREO_HIGH.
 2016-06-30 - c1c7e0ab - lavf 57.41.100 - avformat.h
  Moved codecpar field from AVStream to the end of the struct, so that
  the following private fields are in the same location as in FFmpeg 3.0 (lavf 57.25.100).
 2016-06-30 - 042fb69d - lavu 55.28.100 - frame.h
  Moved hw_frames_ctx field from AVFrame to the end of the struct, so that
  the following private fields are in the same location as in FFmpeg 3.0 (lavu 55.17.103).
 2016-06-29 - 1a751455 - lavfi 6.47.100 - avfilter.h
  Fix accidental ABI breakage in AVFilterContext.
  ABI was broken in 8688d3a, lavfi 6.42.100 and released as ffmpeg 3.1.
  Because of this, ffmpeg and ffplay built against lavfi>=6.42.100 will not be
  compatible with lavfi>=6.47.100. Potentially also affects other users of
  libavfilter if they are using one of the affected fields.
 -------- 8< --------- FFmpeg 3.1 was cut here -------- 8< ---------
 2016-06-26 - 481f320 / 1c9e861 - lavu 55.27.100 / 55.13.0 - hwcontext.h
@@ -1390,7 +442,7 @@ API changes, most recent first:
  Add av_opt_get_dict_val/set_dict_val with AV_OPT_TYPE_DICT to support
  dictionary types being set as options.
-2014-08-13 - afbd4b7e09 - lavf 56.01.0 - avformat.h
+2014-08-13 - afbd4b8 - lavf 56.01.0 - avformat.h
  Add AVFormatContext.event_flags and AVStream.event_flags for signaling to
  the user when events happen in the file/stream.
@@ -1407,7 +459,7 @@ API changes, most recent first:
 2014-08-08 - 5c3c671 - lavf 55.53.100 - avio.h
  Add avio_feof() and deprecate url_feof().
-2014-08-07 - bb789016d4 - lsws 2.1.3 - swscale.h
+2014-08-07 - bb78903 - lsws 2.1.3 - swscale.h
  sws_getContext is not going to be removed in the future.
 2014-08-07 - a561662 / ad1ee5f - lavc 55.73.101 / 55.57.3 - avcodec.h
--- a/doc/Doxyfile
+++ b/doc/Doxyfile
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -24,7 +24,6 @@ HTMLPAGES   = $(AVPROGS-yes:%=doc/%.html) $(AVPROGS-yes:%=doc/%-all.html) $(COMP
              doc/fate.html                                             \
              doc/general.html                                          \
              doc/git-howto.html                                        \
              doc/mailing-list-faq.html                                 \
              doc/nut.html                                              \
              doc/platform.html                                         \
@@ -37,6 +36,30 @@ DOCS-$(CONFIG_MANPAGES)  += $(MANPAGES)
 DOCS-$(CONFIG_TXTPAGES)  += $(TXTPAGES)
 DOCS = $(DOCS-yes)
 DOC_EXAMPLES-$(CONFIG_AVIO_DIR_CMD_EXAMPLE)      += avio_dir_cmd
 DOC_EXAMPLES-$(CONFIG_AVIO_READING_EXAMPLE)      += avio_reading
 DOC_EXAMPLES-$(CONFIG_AVCODEC_EXAMPLE)           += avcodec
 DOC_EXAMPLES-$(CONFIG_DECODING_ENCODING_EXAMPLE) += decoding_encoding
 DOC_EXAMPLES-$(CONFIG_DEMUXING_DECODING_EXAMPLE) += demuxing_decoding
 DOC_EXAMPLES-$(CONFIG_EXTRACT_MVS_EXAMPLE)       += extract_mvs
 DOC_EXAMPLES-$(CONFIG_FILTER_AUDIO_EXAMPLE)      += filter_audio
 DOC_EXAMPLES-$(CONFIG_FILTERING_AUDIO_EXAMPLE)   += filtering_audio
 DOC_EXAMPLES-$(CONFIG_FILTERING_VIDEO_EXAMPLE)   += filtering_video
 DOC_EXAMPLES-$(CONFIG_METADATA_EXAMPLE)          += metadata
 DOC_EXAMPLES-$(CONFIG_MUXING_EXAMPLE)            += muxing
 DOC_EXAMPLES-$(CONFIG_QSVDEC_EXAMPLE)            += qsvdec
 DOC_EXAMPLES-$(CONFIG_REMUXING_EXAMPLE)          += remuxing
 DOC_EXAMPLES-$(CONFIG_RESAMPLING_AUDIO_EXAMPLE)  += resampling_audio
 DOC_EXAMPLES-$(CONFIG_SCALING_VIDEO_EXAMPLE)     += scaling_video
 DOC_EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE)     += transcode_aac
 DOC_EXAMPLES-$(CONFIG_TRANSCODING_EXAMPLE)       += transcoding
 ALL_DOC_EXAMPLES_LIST = $(DOC_EXAMPLES-) $(DOC_EXAMPLES-yes)
 DOC_EXAMPLES       := $(DOC_EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF))
 ALL_DOC_EXAMPLES   := $(ALL_DOC_EXAMPLES_LIST:%=doc/examples/%$(PROGSSUF)$(EXESUF))
 ALL_DOC_EXAMPLES_G := $(ALL_DOC_EXAMPLES_LIST:%=doc/examples/%$(PROGSSUF)_g$(EXESUF))
 PROGS              += $(DOC_EXAMPLES)
 all-$(CONFIG_DOC): doc
 doc: documentation
@@ -44,6 +67,8 @@ doc: documentation
 apidoc: doc/doxy/html
 documentation: $(DOCS)
 examples: $(DOC_EXAMPLES)
 TEXIDEP = perl $(SRC_PATH)/doc/texidep.pl $(SRC_PATH) $< $@ >$(@:%=%.d)
 doc/%.txt: TAG = TXT
@@ -96,13 +121,15 @@ doc/%.3: doc/%.pod $(GENTEXI)
 	$(M)pod2man --section=3 --center=" " --release=" " --date=" " $< > $@
 $(DOCS) doc/doxy/html: | doc/
 $(DOC_EXAMPLES:%$(EXESUF)=%.o): | doc/examples
 OBJDIRS += doc/examples
-DOXY_INPUT      = $(INSTHEADERS)
+DOXY_INPUT      = $(INSTHEADERS) $(DOC_EXAMPLES:%$(EXESUF)=%.c) $(LIB_EXAMPLES:%$(EXESUF)=%.c)
-DOXY_INPUT_DEPS = $(addprefix $(SRC_PATH)/, $(DOXY_INPUT)) ffbuild/config.mak
+DOXY_INPUT_DEPS = $(addprefix $(SRC_PATH)/, $(DOXY_INPUT))
 doc/doxy/html: TAG = DOXY
 doc/doxy/html: $(SRC_PATH)/doc/Doxyfile $(SRC_PATH)/doc/doxy-wrapper.sh $(DOXY_INPUT_DEPS)
-	$(M)$(SRC_PATH)/doc/doxy-wrapper.sh $$PWD/doc/doxy $(SRC_PATH) doc/Doxyfile $(DOXYGEN) $(DOXY_INPUT);
+	$(M)OUT_DIR=$$PWD/doc/doxy; cd $(SRC_PATH); ./doc/doxy-wrapper.sh $$OUT_DIR $< $(DOXYGEN) $(DOXY_INPUT);
 install-doc: install-html install-man
@@ -144,7 +171,11 @@ clean:: docclean
 distclean:: docclean
 	$(RM) doc/config.texi
-docclean::
+examplesclean:
 	$(RM) $(ALL_DOC_EXAMPLES) $(ALL_DOC_EXAMPLES_G)
 	$(RM) $(CLEANSUFFIXES:%=doc/examples/%)
 docclean: examplesclean
 	$(RM) $(CLEANSUFFIXES:%=doc/%)
 	$(RM) $(TXTPAGES) doc/*.html doc/*.pod doc/*.1 doc/*.3 doc/avoptions_*.texi
 	$(RM) -r doc/doxy/html
--- a/doc/bitstream_filters.texi
+++ b/doc/bitstream_filters.texi
@@ -18,7 +18,7 @@ comma-separated list of filters, whose parameters follow the filter
 name after a '='.
@example
-ffmpeg -i INPUT -c:v copy -bsf:v filter1[=opt1=str1:opt2=str2][,filter2] OUTPUT
+ffmpeg -i INPUT -c:v copy -bsf:v filter1[=opt1=str1/opt2=str2][,filter2] OUTPUT
@end example
 Below is a description of the currently available bitstream filters,
@@ -26,101 +26,36 @@ with their parameters, if any.
@section aac_adtstoasc
-Convert MPEG-2/4 AAC ADTS to an MPEG-4 Audio Specific Configuration
+Convert MPEG-2/4 AAC ADTS to MPEG-4 Audio Specific Configuration
-bitstream.
+bitstream filter.
 This filter creates an MPEG-4 AudioSpecificConfig from an MPEG-2/4
 ADTS header and removes the ADTS header.
-This filter is required for example when copying an AAC stream from a
+This is required for example when copying an AAC stream from a raw
-raw ADTS AAC or an MPEG-TS container to MP4A-LATM, to an FLV file, or
+ADTS AAC container to a FLV or a MOV/MP4 file.
 to MOV/MP4 files and related formats such as 3GP or M4A. Please note
 that it is auto-inserted for MP4A-LATM and MOV/MP4 and related formats.
@section av1_metadata
 Modify metadata embedded in an AV1 stream.
@table @option
@item td
 Insert or remove temporal delimiter OBUs in all temporal units of the
 stream.
@table @samp
@item insert
 Insert a TD at the beginning of every TU which does not already have one.
@item remove
 Remove the TD from the beginning of every TU which has one.
@end table
@item color_primaries
@item transfer_characteristics
@item matrix_coefficients
 Set the color description fields in the stream (see AV1 section 6.4.2).
@item color_range
 Set the color range in the stream (see AV1 section 6.4.2; note that
 this cannot be set for streams using BT.709 primaries, sRGB transfer
 characteristic and identity (RGB) matrix coefficients).
@table @samp
@item tv
 Limited range.
@item pc
 Full range.
@end table
@item chroma_sample_position
 Set the chroma sample location in the stream (see AV1 section 6.4.2).
 This can only be set for 4:2:0 streams.
@table @samp
@item vertical
 Left position (matching the default in MPEG-2 and H.264).
@item colocated
 Top-left position.
@end table
@item tick_rate
 Set the tick rate (@emph{time_scale / num_units_in_display_tick}) in
 the timing info in the sequence header.
@item num_ticks_per_picture
 Set the number of ticks in each picture, to indicate that the stream
 has a fixed framerate.  Ignored if @option{tick_rate} is not also set.
@item delete_padding
 Deletes Padding OBUs.
@end table
@section chomp
 Remove zero padding at the end of a packet.
@section dca_core
 Extract the core from a DCA/DTS stream, dropping extensions such as
 DTS-HD.
@section dump_extra
-Add extradata to the beginning of the filtered packets except when
+Add extradata to the beginning of the filtered packets.
 said packets already exactly begin with the extradata that is intended
 to be added.
@table @option
@item freq
 The additional argument specifies which packets should be filtered.
 It accepts the values:
@table @samp
@item a
 add extradata to all key packets, but only if @var{local_header} is
 set in the @option{flags2} codec context field
@item k
@item keyframe
 add extradata to all key packets
@item e
@item all
 add extradata to all packets
@end table
@end table
 If not specified it is assumed @samp{k}.
@@ -132,165 +67,9 @@ the header stored in extradata to the key packets:
 ffmpeg -i INPUT -map 0 -flags:v +global_header -c:v libx264 -bsf:v dump_extra out.ts
@end example
-@section eac3_core
+@section dca_core
-Extract the core from a E-AC-3 stream, dropping extra channels.
+Extract DCA core from DTS-HD streams.
@section extract_extradata
 Extract the in-band extradata.
 Certain codecs allow the long-term headers (e.g. MPEG-2 sequence headers,
 or H.264/HEVC (VPS/)SPS/PPS) to be transmitted either "in-band" (i.e. as a part
 of the bitstream containing the coded frames) or "out of band" (e.g. on the
 container level). This latter form is called "extradata" in FFmpeg terminology.
 This bitstream filter detects the in-band headers and makes them available as
 extradata.
@table @option
@item remove
 When this option is enabled, the long-term headers are removed from the
 bitstream after extraction.
@end table
@section filter_units
 Remove units with types in or not in a given set from the stream.
@table @option
@item pass_types
 List of unit types or ranges of unit types to pass through while removing
 all others.  This is specified as a '|'-separated list of unit type values
 or ranges of values with '-'.
@item remove_types
 Identical to @option{pass_types}, except the units in the given set
 removed and all others passed through.
@end table
 Extradata is unchanged by this transformation, but note that if the stream
 contains inline parameter sets then the output may be unusable if they are
 removed.
 For example, to remove all non-VCL NAL units from an H.264 stream:
@example
 ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=pass_types=1-5' OUTPUT
@end example
 To remove all AUDs, SEI and filler from an H.265 stream:
@example
 ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=remove_types=35|38-40' OUTPUT
@end example
@section hapqa_extract
 Extract Rgb or Alpha part of an HAPQA file, without recompression, in order to create an HAPQ or an HAPAlphaOnly file.
@table @option
@item texture
 Specifies the texture to keep.
@table @option
@item color
@item alpha
@end table
@end table
 Convert HAPQA to HAPQ
@example
 ffmpeg -i hapqa_inputfile.mov -c copy -bsf:v hapqa_extract=texture=color -tag:v HapY -metadata:s:v:0 encoder="HAPQ" hapq_file.mov
@end example
 Convert HAPQA to HAPAlphaOnly
@example
 ffmpeg -i hapqa_inputfile.mov -c copy -bsf:v hapqa_extract=texture=alpha -tag:v HapA -metadata:s:v:0 encoder="HAPAlpha Only" hapalphaonly_file.mov
@end example
@section h264_metadata
 Modify metadata embedded in an H.264 stream.
@table @option
@item aud
 Insert or remove AUD NAL units in all access units of the stream.
@table @samp
@item insert
@item remove
@end table
@item sample_aspect_ratio
 Set the sample aspect ratio of the stream in the VUI parameters.
@item overscan_appropriate_flag
 Set whether the stream is suitable for display using overscan
 or not (see H.264 section E.2.1).
@item video_format
@item video_full_range_flag
 Set the video format in the stream (see H.264 section E.2.1 and
 table E-2).
@item colour_primaries
@item transfer_characteristics
@item matrix_coefficients
 Set the colour description in the stream (see H.264 section E.2.1
 and tables E-3, E-4 and E-5).
@item chroma_sample_loc_type
 Set the chroma sample location in the stream (see H.264 section
 E.2.1 and figure E-1).
@item tick_rate
 Set the tick rate (time_scale / num_units_in_tick) in the VUI
 parameters.  This is the smallest time unit representable in the
 stream, and in many cases represents the field rate of the stream
 (double the frame rate).
@item fixed_frame_rate_flag
 Set whether the stream has fixed framerate - typically this indicates
 that the framerate is exactly half the tick rate, but the exact
 meaning is dependent on interlacing and the picture structure (see
 H.264 section E.2.1 and table E-6).
@item zero_new_constraint_set_flags
 Zero constraint_set4_flag and constraint_set5_flag in the SPS. These
 bits were reserved in a previous version of the H.264 spec, and thus
 some hardware decoders require these to be zero. The result of zeroing
 this is still a valid bitstream.
@item crop_left
@item crop_right
@item crop_top
@item crop_bottom
 Set the frame cropping offsets in the SPS.  These values will replace
 the current ones if the stream is already cropped.
 These fields are set in pixels.  Note that some sizes may not be
 representable if the chroma is subsampled or the stream is interlaced
 (see H.264 section 7.4.2.1.1).
@item sei_user_data
 Insert a string as SEI unregistered user data.  The argument must
 be of the form @emph{UUID+string}, where the UUID is as hex digits
 possibly separated by hyphens, and the string can be anything.
 For example, @samp{086f3693-b7b3-4f2c-9653-21492feee5b8+hello} will
 insert the string ``hello'' associated with the given UUID.
@item delete_filler
 Deletes both filler NAL units and filler SEI messages.
@item level
 Set the level in the SPS.  Refer to H.264 section A.3 and tables A-1
 to A-5.
 The argument must be the name of a level (for example, @samp{4.2}), a
 level_idc value (for example, @samp{42}), or the special name @samp{auto}
 indicating that the filter should attempt to guess the level from the
 input stream properties.
@end table
@section h264_mp4toannexb
@@ -299,7 +78,7 @@ prefixed mode (as defined in the Annex B of the ITU-T H.264
 specification).
 This is required by some streaming formats, typically the MPEG-2
-transport stream format (muxer @code{mpegts}).
+transport stream format ("mpegts").
 For example to remux an MP4 file containing an H.264 stream to mpegts
 format with @command{ffmpeg}, you can use the command:
@@ -308,101 +87,6 @@ format with @command{ffmpeg}, you can use the command:
 ffmpeg -i INPUT.mp4 -codec copy -bsf:v h264_mp4toannexb OUTPUT.ts
@end example
 Please note that this filter is auto-inserted for MPEG-TS (muxer
@code{mpegts}) and raw H.264 (muxer @code{h264}) output formats.
@section h264_redundant_pps
 This applies a specific fixup to some Blu-ray streams which contain
 redundant PPSs modifying irrelevant parameters of the stream which
 confuse other transformations which require correct extradata.
 A new single global PPS is created, and all of the redundant PPSs
 within the stream are removed.
@section hevc_metadata
 Modify metadata embedded in an HEVC stream.
@table @option
@item aud
 Insert or remove AUD NAL units in all access units of the stream.
@table @samp
@item insert
@item remove
@end table
@item sample_aspect_ratio
 Set the sample aspect ratio in the stream in the VUI parameters.
@item video_format
@item video_full_range_flag
 Set the video format in the stream (see H.265 section E.3.1 and
 table E.2).
@item colour_primaries
@item transfer_characteristics
@item matrix_coefficients
 Set the colour description in the stream (see H.265 section E.3.1
 and tables E.3, E.4 and E.5).
@item chroma_sample_loc_type
 Set the chroma sample location in the stream (see H.265 section
 E.3.1 and figure E.1).
@item tick_rate
 Set the tick rate in the VPS and VUI parameters (time_scale /
 num_units_in_tick). Combined with @option{num_ticks_poc_diff_one}, this can
 set a constant framerate in the stream.  Note that it is likely to be
 overridden by container parameters when the stream is in a container.
@item num_ticks_poc_diff_one
 Set poc_proportional_to_timing_flag in VPS and VUI and use this value
 to set num_ticks_poc_diff_one_minus1 (see H.265 sections 7.4.3.1 and
 E.3.1).  Ignored if @option{tick_rate} is not also set.
@item crop_left
@item crop_right
@item crop_top
@item crop_bottom
 Set the conformance window cropping offsets in the SPS.  These values
 will replace the current ones if the stream is already cropped.
 These fields are set in pixels.  Note that some sizes may not be
 representable if the chroma is subsampled (H.265 section 7.4.3.2.1).
@item level
 Set the level in the VPS and SPS.  See H.265 section A.4 and tables
 A.6 and A.7.
 The argument must be the name of a level (for example, @samp{5.1}), a
@emph{general_level_idc} value (for example, @samp{153} for level 5.1),
 or the special name @samp{auto} indicating that the filter should
 attempt to guess the level from the input stream properties.
@end table
@section hevc_mp4toannexb
 Convert an HEVC/H.265 bitstream from length prefixed mode to start code
 prefixed mode (as defined in the Annex B of the ITU-T H.265
 specification).
 This is required by some streaming formats, typically the MPEG-2
 transport stream format (muxer @code{mpegts}).
 For example to remux an MP4 file containing an HEVC stream to mpegts
 format with @command{ffmpeg}, you can use the command:
@example
 ffmpeg -i INPUT.mp4 -codec copy -bsf:v hevc_mp4toannexb OUTPUT.ts
@end example
 Please note that this filter is auto-inserted for MPEG-TS (muxer
@code{mpegts}) and raw HEVC/H.265 (muxer @code{h265} or
@code{hevc}) output formats.
@section imxdump
 Modifies the bitstream to fit in MOV and to be usable by the Final Cut
@@ -453,58 +137,11 @@ exiftran -i -9 frame*.jpg
 ffmpeg -i frame_%d.jpg -c:v copy rotated.avi
@end example
-@section mjpegadump
+@section mjpega_dump_header
-Add an MJPEG A header to the bitstream, to enable decoding by
+@section movsub
 Quicktime.
-@anchor{mov2textsub}
+@section mp3_header_decompress
@section mov2textsub
 Extract a representable text file from MOV subtitles, stripping the
 metadata header from each subtitle packet.
 See also the @ref{text2movsub} filter.
@section mp3decomp
 Decompress non-standard compressed MP3 audio headers.
@section mpeg2_metadata
 Modify metadata embedded in an MPEG-2 stream.
@table @option
@item display_aspect_ratio
 Set the display aspect ratio in the stream.
 The following fixed values are supported:
@table @option
@item 4/3
@item 16/9
@item 221/100
@end table
 Any other value will result in square pixels being signalled instead
 (see H.262 section 6.3.3 and table 6-3).
@item frame_rate
 Set the frame rate in the stream.  This is constructed from a table
 of known values combined with a small multiplier and divisor - if
 the supplied value is not exactly representable, the nearest
 representable value will be used instead (see H.262 section 6.3.3
 and table 6-4).
@item video_format
 Set the video format in the stream (see H.262 section 6.3.6 and
 table 6-6).
@item colour_primaries
@item transfer_characteristics
@item matrix_coefficients
 Set the colour description in the stream (see H.262 section 6.3.6
 and tables 6-7, 6-8 and 6-9).
@end table
@section mpeg4_unpack_bframes
@@ -528,327 +165,20 @@ ffmpeg -i INPUT.avi -codec copy -bsf:v mpeg4_unpack_bframes OUTPUT.avi
@section noise
-Damages the contents of packets or simply drops them without damaging the
+Damages the contents of packets without damaging the container. Can be
-container. Can be used for fuzzing or testing error resilience/concealment.
+used for fuzzing or testing error resilience/concealment.
 Parameters:
-@table @option
+A numeral string, whose value is related to how often output bytes will
-@item amount
+be modified. Therefore, values below or equal to 0 are forbidden, and
-Accepts an expression whose evaluation per-packet determines how often bytes in that
+the lower the more frequent bytes will be modified, with 1 meaning
-packet will be modified. A value below 0 will result in a variable frequency.
+every byte is modified.
 Default is 0 which results in no modification. However, if neither amount nor drop is specified,
 amount will be set to @var{-1}. See below for accepted variables.
@item drop
 Accepts an expression evaluated per-packet whose value determines whether that packet is dropped.
 Evaluation to a positive value results in the packet being dropped. Evaluation to a negative
 value results in a variable chance of it being dropped, roughly inverse in proportion to the magnitude
 of the value. Default is 0 which results in no drops. See below for accepted variables.
@item dropamount
 Accepts a non-negative integer, which assigns a variable chance of it being dropped, roughly inverse
 in proportion to the value. Default is 0 which results in no drops. This option is kept for backwards
 compatibility and is equivalent to setting drop to a negative value with the same magnitude
 i.e. @code{dropamount=4} is the same as @code{drop=-4}. Ignored if drop is also specified.
@end table
 Both @code{amount} and @code{drop} accept expressions containing the following variables:
@table @samp
@item n
 The index of the packet, starting from zero.
@item tb
 The timebase for packet timestamps.
@item pts
 Packet presentation timestamp.
@item dts
 Packet decoding timestamp.
@item nopts
 Constant representing AV_NOPTS_VALUE.
@item startpts
 First non-AV_NOPTS_VALUE PTS seen in the stream.
@item startdts
 First non-AV_NOPTS_VALUE DTS seen in the stream.
@item duration
@itemx d
 Packet duration, in timebase units.
@item pos
 Packet position in input; may be -1 when unknown or not set.
@item size
 Packet size, in bytes.
@item key
 Whether packet is marked as a keyframe.
@item state
 A pseudo random integer, primarily derived from the content of packet payload.
@end table
@subsection Examples
 Apply modification to every byte but don't drop any packets.
@example
-ffmpeg -i INPUT -c copy -bsf noise=1 output.mkv
+ffmpeg -i INPUT -c copy -bsf noise[=1] output.mkv
@end example
 Drop every video packet not marked as a keyframe after timestamp 30s but do not
 modify any of the remaining packets.
@example
 ffmpeg -i INPUT -c copy -bsf:v noise=drop='gt(t\,30)*not(key)' output.mkv
@end example
 Drop one second of audio every 10 seconds and add some random noise to the rest.
@example
 ffmpeg -i INPUT -c copy -bsf:a noise=amount=-1:drop='between(mod(t\,10)\,9\,10)' output.mkv
@end example
@section null
 This bitstream filter passes the packets through unchanged.
@section pcm_rechunk
 Repacketize PCM audio to a fixed number of samples per packet or a fixed packet
 rate per second. This is similar to the @ref{asetnsamples,,asetnsamples audio
 filter,ffmpeg-filters} but works on audio packets instead of audio frames.
@table @option
@item nb_out_samples, n
 Set the number of samples per each output audio packet. The number is intended
 as the number of samples @emph{per each channel}. Default value is 1024.
@item pad, p
 If set to 1, the filter will pad the last audio packet with silence, so that it
 will contain the same number of samples (or roughly the same number of samples,
 see @option{frame_rate}) as the previous ones. Default value is 1.
@item frame_rate, r
 This option makes the filter output a fixed number of packets per second instead
 of a fixed number of samples per packet. If the audio sample rate is not
 divisible by the frame rate then the number of samples will not be constant but
 will vary slightly so that each packet will start as close to the frame
 boundary as possible. Using this option has precedence over @option{nb_out_samples}.
@end table
 You can generate the well known 1602-1601-1602-1601-1602 pattern of 48kHz audio
 for NTSC frame rate using the @option{frame_rate} option.
@example
 ffmpeg -f lavfi -i sine=r=48000:d=1 -c pcm_s16le -bsf pcm_rechunk=r=30000/1001 -f framecrc -
@end example
@section prores_metadata
 Modify color property metadata embedded in prores stream.
@table @option
@item color_primaries
 Set the color primaries.
 Available values are:
@table @samp
@item auto
 Keep the same color primaries property (default).
@item unknown
@item bt709
@item bt470bg
 BT601 625
@item smpte170m
 BT601 525
@item bt2020
@item smpte431
 DCI P3
@item smpte432
 P3 D65
@end table
@item transfer_characteristics
 Set the color transfer.
 Available values are:
@table @samp
@item auto
 Keep the same transfer characteristics property (default).
@item unknown
@item bt709
 BT 601, BT 709, BT 2020
@item smpte2084
 SMPTE ST 2084
@item arib-std-b67
 ARIB STD-B67
@end table
@item matrix_coefficients
 Set the matrix coefficient.
 Available values are:
@table @samp
@item auto
 Keep the same colorspace property (default).
@item unknown
@item bt709
@item smpte170m
 BT 601
@item bt2020nc
@end table
@end table
 Set Rec709 colorspace for each frame of the file
@example
 ffmpeg -i INPUT -c copy -bsf:v prores_metadata=color_primaries=bt709:color_trc=bt709:colorspace=bt709 output.mov
@end example
 Set Hybrid Log-Gamma parameters for each frame of the file
@example
 ffmpeg -i INPUT -c copy -bsf:v prores_metadata=color_primaries=bt2020:color_trc=arib-std-b67:colorspace=bt2020nc output.mov
@end example
 applies the modification to every byte.
@section remove_extra
 Remove extradata from packets.
 It accepts the following parameter:
@table @option
@item freq
 Set which frame types to remove extradata from.
@table @samp
@item k
 Remove extradata from non-keyframes only.
@item keyframe
 Remove extradata from keyframes only.
@item e, all
 Remove extradata from all frames.
@end table
@end table
@section setts
 Set PTS and DTS in packets.
 It accepts the following parameters:
@table @option
@item ts
@item pts
@item dts
 Set expressions for PTS, DTS or both.
@end table
 The expressions are evaluated through the eval API and can contain the following
 constants:
@table @option
@item N
 The count of the input packet. Starting from 0.
@item TS
 The demux timestamp in input in case of @code{ts} or @code{dts} option or presentation
 timestamp in case of @code{pts} option.
@item POS
 The original position in the file of the packet, or undefined if undefined
 for the current packet
@item DTS
 The demux timestamp in input.
@item PTS
 The presentation timestamp in input.
@item STARTDTS
 The DTS of the first packet.
@item STARTPTS
 The PTS of the first packet.
@item PREV_INDTS
 The previous input DTS.
@item PREV_INPTS
 The previous input PTS.
@item PREV_OUTDTS
 The previous output DTS.
@item PREV_OUTPTS
 The previous output PTS.
@item TB
 The timebase of stream packet belongs.
@item SR
 The sample rate of stream packet belongs.
@item NOPTS
 The AV_NOPTS_VALUE constant.
@end table
@anchor{text2movsub}
@section text2movsub
 Convert text subtitles to MOV subtitles (as used by the @code{mov_text}
 codec) with metadata headers.
 See also the @ref{mov2textsub} filter.
@section trace_headers
 Log trace output containing all syntax elements in the coded stream
 headers (everything above the level of individual coded blocks).
 This can be useful for debugging low-level stream issues.
 Supports AV1, H.264, H.265, (M)JPEG, MPEG-2 and VP9, but depending
 on the build only a subset of these may be available.
@section truehd_core
 Extract the core from a TrueHD stream, dropping ATMOS data.
@section vp9_metadata
 Modify metadata embedded in a VP9 stream.
@table @option
@item color_space
 Set the color space value in the frame header.  Note that any frame
 set to RGB will be implicitly set to PC range and that RGB is
 incompatible with profiles 0 and 2.
@table @samp
@item unknown
@item bt601
@item bt709
@item smpte170
@item smpte240
@item bt2020
@item rgb
@end table
@item color_range
 Set the color range value in the frame header.  Note that any value
 imposed by the color space will take precedence over this value.
@table @samp
@item tv
@item pc
@end table
@end table
@section vp9_superframe
 Merge VP9 invisible (alt-ref) frames back into VP9 superframes. This
 fixes merging of split/segmented VP9 streams where the alt-ref frame
 was split from its visible counterpart.
@section vp9_superframe_split
 Split VP9 superframes into single frames.
@section vp9_raw_reorder
 Given a VP9 stream with correct timestamps but possibly out of order,
 insert additional show-existing-frame packets to correct the ordering.
@c man end BITSTREAM FILTERS
--- a/doc/build_system.txt
+++ b/doc/build_system.txt
@@ -36,20 +36,15 @@ install
 examples
    Build all examples located in doc/examples.
-checkheaders
+libavformat/output-example
-    Check headers dependencies.
+    Build the libavformat basic example.
-alltools
+libswscale/swscale-test
-    Build all tools in tools directory.
+    Build the swscale self-test (useful also as an example).
 config
    Reconfigure the project with the current configuration.
 tools/target_dec_<decoder>_fuzzer
    Build fuzzer to fuzz the specified decoder.
 tools/target_bsf_<filter>_fuzzer
    Build fuzzer to fuzz the specified bitstream filter.
 Useful standard make commands:
 make -t <target>
--- a/doc/codecs.texi
+++ b/doc/codecs.texi
@@ -44,20 +44,26 @@ Use 1/4 pel motion compensation.
 Use loop filter.
@item qscale
 Use fixed qscale.
@item gmc
 Use gmc.
@item mv0
 Always try a mb with mv=<0,0>.
@item input_preserved
@item pass1
 Use internal 2pass ratecontrol in first pass mode.
@item pass2
 Use internal 2pass ratecontrol in second pass mode.
@item gray
 Only decode/encode grayscale.
@item emu_edge
 Do not draw edges.
@item psnr
 Set error[?] variables during encoding.
@item truncated
 Input bitstream might be randomly truncated.
@item drop_changed
 Don't output frames whose parameters differ from first decoded frame in stream.
 Error AVERROR_INPUT_CHANGED is returned when a frame is dropped.
@item naq
 Normalize adaptive quantization.
@item ildct
 Use interlaced DCT.
@item low_delay
@@ -70,14 +76,50 @@ This ensures that file and data checksums are reproducible and match between
 platforms. Its primary use is for regression testing.
@item aic
 Apply H263 advanced intra coding / mpeg4 ac prediction.
@item cbp
 Deprecated, use mpegvideo private options instead.
@item qprd
 Deprecated, use mpegvideo private options instead.
@item ilme
 Apply interlaced motion estimation.
@item cgop
 Use closed gop.
@item output_corrupt
 Output even potentially corrupted frames.
@end table
@item me_method @var{integer} (@emph{encoding,video})
 Set motion estimation method.
 Possible values:
@table @samp
@item zero
 zero motion estimation (fastest)
@item full
 full motion estimation (slowest)
@item epzs
 EPZS motion estimation (default)
@item esa
 esa motion estimation (alias for full)
@item tesa
 tesa motion estimation
@item dia
 dia motion estimation (alias for epzs)
@item log
 log motion estimation
@item phods
 phods motion estimation
@item x1
 X1 motion estimation
@item hex
 hex motion estimation
@item umh
 umh motion estimation
@item iter
 iter motion estimation
@end table
@item extradata_size @var{integer}
 Set extradata size.
@item time_base @var{rational number}
 Set codec time base.
@@ -96,8 +138,7 @@ Set audio sampling rate (in Hz).
 Set number of audio channels.
@item cutoff @var{integer} (@emph{encoding,audio})
-Set cutoff bandwidth. (Supported only by selected encoders, see
+Set cutoff bandwidth.
 their respective documentation sections.)
@item frame_size @var{integer} (@emph{encoding,audio})
 Set audio frame size.
@@ -144,6 +185,24 @@ Default value is 0.
@item b_qfactor @var{float} (@emph{encoding,video})
 Set qp factor between P and B frames.
@item rc_strategy @var{integer} (@emph{encoding,video})
 Set ratecontrol method.
@item b_strategy @var{integer} (@emph{encoding,video})
 Set strategy to choose between I/P/B-frames.
@item ps @var{integer} (@emph{encoding,video})
 Set RTP payload size in bytes.
@item mv_bits @var{integer}
@item header_bits @var{integer}
@item i_tex_bits @var{integer}
@item p_tex_bits @var{integer}
@item i_count @var{integer}
@item p_count @var{integer}
@item skip_count @var{integer}
@item misc_bits @var{integer}
@item frame_bits @var{integer}
@item codec_tag @var{integer}
@item bug @var{flags} (@emph{decoding,video})
 Workaround not auto detected encoder bugs.
@@ -152,6 +211,8 @@ Possible values:
@table @samp
@item autodetect
@item old_msmpeg4
 some old lavc generated msmpeg4v3 files (no autodetection)
@item xvid_ilace
 Xvid interlacing bug (autodetected if fourcc==XVIX)
@item ump4
@@ -160,6 +221,8 @@ Xvid interlacing bug (autodetected if fourcc==XVIX)
 padding bug (autodetected)
@item amv
@item ac_vlc
 illegal vlc bug (autodetected per fourcc)
@item qpel_chroma
@item std_qpel
@@ -180,6 +243,14 @@ Workaround various bugs in microsoft broken decoders.
 trancated frames
@end table
@item lelim @var{integer} (@emph{encoding,video})
 Set single coefficient elimination threshold for luminance (negative
 values also consider DC coefficient).
@item celim @var{integer} (@emph{encoding,video})
 Set single coefficient elimination threshold for chrominance (negative
 values also consider dc coefficient)
@item strict @var{integer} (@emph{decoding/encoding,audio,video})
 Specify how strictly to follow the standards.
@@ -233,8 +304,29 @@ consider things that a sane encoder should not do as an error
@item block_align @var{integer}
@item mpeg_quant @var{integer} (@emph{encoding,video})
 Use MPEG quantizers instead of H.263.
@item qsquish @var{float} (@emph{encoding,video})
 How to keep quantizer between qmin and qmax (0 = clip, 1 = use
 differentiable function).
@item rc_qmod_amp @var{float} (@emph{encoding,video})
 Set experimental quantizer modulation.
@item rc_qmod_freq @var{integer} (@emph{encoding,video})
 Set experimental quantizer modulation.
@item rc_override_count @var{integer}
@item rc_eq @var{string} (@emph{encoding,video})
 Set rate control equation. When computing the expression, besides the
 standard functions defined in the section 'Expression Evaluation', the
 following functions are available: bits2qp(bits), qp2bits(qp). Also
 the following constants are available: iTex pTex tex mv fCode iCount
 mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex
 avgTex.
@item maxrate @var{integer} (@emph{encoding,audio,video})
 Set max bitrate tolerance (in bits/s). Requires bufsize to be set.
@@ -245,12 +337,18 @@ encode. It is of little use elsewise.
@item bufsize @var{integer} (@emph{encoding,audio,video})
 Set ratecontrol buffer size (in bits).
@item rc_buf_aggressivity @var{float} (@emph{encoding,video})
 Currently useless.
@item i_qfactor @var{float} (@emph{encoding,video})
 Set QP factor between P and I frames.
@item i_qoffset @var{float} (@emph{encoding,video})
 Set QP offset between P and I frames.
@item rc_init_cplx @var{float} (@emph{encoding,video})
 Set initial complexity for 1-pass encoding.
@item dct @var{integer} (@emph{encoding,video})
 Set DCT algorithm.
@@ -315,7 +413,11 @@ Automatically pick a IDCT compatible with the simple one
@item simpleneon
-@item xvid
+@item simplealpha
@item ipp
@item xvidmmx
@item faani
 floating point AAN IDCT
@@ -338,6 +440,19 @@ favor predicting from the previous frame instead of the current
@item bits_per_coded_sample @var{integer}
@item pred @var{integer} (@emph{encoding,video})
 Set prediction method.
 Possible values:
@table @samp
@item left
@item plane
@item median
@end table
@item aspect @var{rational number} (@emph{encoding,video})
 Set sample aspect ratio.
@@ -359,6 +474,8 @@ rate control
 macroblock (MB) type
@item qp
 per-block quantization parameter (QP)
@item mv
 motion vector
@item dct_coeff
@item green_metadata
@@ -368,12 +485,18 @@ display complexity metadata for the upcoming frame, GoP or for a given duration.
@item startcode
@item pts
@item er
 error recognition
@item mmco
 memory management control operations (H.264)
@item bugs
@item vis_qp
 visualize quantization parameter (QP), lower QP are tinted greener
@item vis_mb_type
 visualize block types
@item buffers
 picture buffer allocations
@item thread_ops
@@ -382,6 +505,21 @@ threading operations
 skip motion compensation
@end table
@item vismv @var{integer} (@emph{decoding,video})
 Visualize motion vectors (MVs).
 This option is deprecated, see the codecview filter instead.
 Possible values:
@table @samp
@item pf
 forward predicted MVs of P-frames
@item bf
 forward predicted MVs of B-frames
@item bb
 backward predicted MVs of B-frames
@end table
@item cmp @var{integer} (@emph{encoding,video})
 Set full pel me compare function.
@@ -532,28 +670,13 @@ noise preserving sum of squared differences
@item dia_size @var{integer} (@emph{encoding,video})
 Set diamond type & size for motion estimation.
@table @samp
@item (1024, INT_MAX)
 full motion estimation(slowest)
@item (768, 1024]
 umh motion estimation
@item (512, 768]
 hex motion estimation
@item (256, 512]
 l2s diamond motion estimation
@item [2,256]
 var diamond motion estimation
@item (-1,  2)
 small diamond motion estimation
@item -1
 funny diamond motion estimation
@item (INT_MIN, -1)
 sab diamond motion estimation
@end table
@item last_pred @var{integer} (@emph{encoding,video})
 Set amount of motion predictors from the previous frame.
@item preme @var{integer} (@emph{encoding,video})
 Set pre motion estimation.
@item precmp @var{integer} (@emph{encoding,video})
 Set pre motion estimation compare function.
@@ -597,13 +720,44 @@ Set diamond type & size for motion estimation pre-pass.
@item subq @var{integer} (@emph{encoding,video})
 Set sub pel motion estimation quality.
@item dtg_active_format @var{integer}
@item me_range @var{integer} (@emph{encoding,video})
 Set limit motion vectors range (1023 for DivX player).
@item ibias @var{integer} (@emph{encoding,video})
 Set intra quant bias.
@item pbias @var{integer} (@emph{encoding,video})
 Set inter quant bias.
@item color_table_id @var{integer}
@item global_quality @var{integer} (@emph{encoding,audio,video})
@item coder @var{integer} (@emph{encoding,video})
 Possible values:
@table @samp
@item vlc
 variable length coder / huffman coder
@item ac
 arithmetic coder
@item raw
 raw (no encoding)
@item rle
 run-length coder
@item deflate
 deflate-based coder
@end table
@item context @var{integer} (@emph{encoding,video})
 Set context model.
@item slice_flags @var{integer}
@item xvmc_acceleration @var{integer}
@item mbd @var{integer} (@emph{encoding,video})
 Set macroblock decision algorithm (high quality mode).
@@ -617,16 +771,32 @@ use fewest bits
 use best rate distortion
@end table
@item stream_codec_tag @var{integer}
@item sc_threshold @var{integer} (@emph{encoding,video})
 Set scene change threshold.
@item lmin @var{integer} (@emph{encoding,video})
 Set min lagrange factor (VBR).
@item lmax @var{integer} (@emph{encoding,video})
 Set max lagrange factor (VBR).
@item nr @var{integer} (@emph{encoding,video})
 Set noise reduction.
@item rc_init_occupancy @var{integer} (@emph{encoding,video})
 Set number of bits which should be loaded into the rc buffer before
 decoding starts.
-@item flags2 @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
+@item flags2 @var{flags} (@emph{decoding/encoding,audio,video})
 Possible values:
@table @samp
@item fast
 Allow non spec compliant speedup tricks.
@item sgop
 Deprecated, use mpegvideo private options instead.
@item noout
 Skip bitstream encoding.
@item ignorecrop
@@ -637,32 +807,17 @@ Place global headers at every keyframe instead of in extradata.
 Frame data might be split into multiple chunks.
@item showall
 Show all frames before the first keyframe.
@item skiprd
 Deprecated, use mpegvideo private options instead.
@item export_mvs
 Export motion vectors into frame side-data (see @code{AV_FRAME_DATA_MOTION_VECTORS})
 for codecs that support it. See also @file{doc/examples/export_mvs.c}.
@item skip_manual
 Do not skip samples and export skip information as frame side data.
@item ass_ro_flush_noop
 Do not reset ASS ReadOrder field on flush.
@end table
-@item export_side_data @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
+@item error @var{integer} (@emph{encoding,video})
-Possible values:
+@item qns @var{integer} (@emph{encoding,video})
-@table @samp
+Deprecated, use mpegvideo private options instead.
@item mvs
 Export motion vectors into frame side-data (see @code{AV_FRAME_DATA_MOTION_VECTORS})
 for codecs that support it. See also @file{doc/examples/export_mvs.c}.
@item prft
 Export encoder Producer Reference Time into packet side-data (see @code{AV_PKT_DATA_PRFT})
 for codecs that support it.
@item venc_params
 Export video encoding parameters through frame side data (see @code{AV_FRAME_DATA_VIDEO_ENC_PARAMS})
 for codecs that support it. At present, those are H.264 and VP9.
@item film_grain
 Export film grain parameters through frame side data (see @code{AV_FRAME_DATA_FILM_GRAIN_PARAMS}).
 Supported at present by AV1 decoders.
@end table
@item threads @var{integer} (@emph{decoding/encoding,video})
 Set the number of threads to be used, in case the selected codec
@@ -676,6 +831,12 @@ automatically select the number of threads to set
 Default value is @samp{auto}.
@item me_threshold @var{integer} (@emph{encoding,video})
 Set motion estimation threshold.
@item mb_threshold @var{integer} (@emph{encoding,video})
 Set macroblock threshold.
@item dc @var{integer} (@emph{encoding,video})
 Set intra_dc_precision.
@@ -690,8 +851,49 @@ Set number of macroblock rows at the bottom which are skipped.
@item profile @var{integer} (@emph{encoding,audio,video})
-Set encoder codec profile. Default value is @samp{unknown}. Encoder specific
+Possible values:
-profiles are documented in the relevant encoder documentation.
+@table @samp
@item unknown
@item aac_main
@item aac_low
@item aac_ssr
@item aac_ltp
@item aac_he
@item aac_he_v2
@item aac_ld
@item aac_eld
@item mpeg2_aac_low
@item mpeg2_aac_he
@item mpeg4_sp
@item mpeg4_core
@item mpeg4_main
@item mpeg4_asp
@item dts
@item dts_es
@item dts_96_24
@item dts_hd_hra
@item dts_hd_ma
@end table
@item level @var{integer} (@emph{encoding,audio,video})
@@ -704,12 +906,67 @@ Possible values:
@item lowres @var{integer} (@emph{decoding,audio,video})
 Decode at 1= 1/2, 2=1/4, 3=1/8 resolutions.
@item skip_threshold @var{integer} (@emph{encoding,video})
 Set frame skip threshold.
@item skip_factor @var{integer} (@emph{encoding,video})
 Set frame skip factor.
@item skip_exp @var{integer} (@emph{encoding,video})
 Set frame skip exponent.
 Negative values behave identical to the corresponding positive ones, except
 that the score is normalized.
 Positive values exist primarily for compatibility reasons and are not so useful.
@item skipcmp @var{integer} (@emph{encoding,video})
 Set frame skip compare function.
 Possible values:
@table @samp
@item sad
 sum of absolute differences, fast (default)
@item sse
 sum of squared errors
@item satd
 sum of absolute Hadamard transformed differences
@item dct
 sum of absolute DCT transformed differences
@item psnr
 sum of squared quantization errors (avoid, low quality)
@item bit
 number of bits needed for the block
@item rd
 rate distortion optimal, slow
@item zero
 0
@item vsad
 sum of absolute vertical differences
@item vsse
 sum of squared vertical differences
@item nsse
 noise preserving sum of squared differences
@item w53
 5/3 wavelet, only used in snow
@item w97
 9/7 wavelet, only used in snow
@item dctmax
@item chroma
@end table
@item border_mask @var{float} (@emph{encoding,video})
 Increase the quantizer for macroblocks close to borders.
@item mblmin @var{integer} (@emph{encoding,video})
 Set min macroblock lagrange factor (VBR).
@item mblmax @var{integer} (@emph{encoding,video})
 Set max macroblock lagrange factor (VBR).
@item mepc @var{integer} (@emph{encoding,video})
 Set motion estimation bitrate penalty compensation (1.0 = 256).
@item skip_loop_filter @var{integer} (@emph{decoding,video})
@item skip_idct        @var{integer} (@emph{decoding,video})
@item skip_frame       @var{integer} (@emph{decoding,video})
@@ -737,9 +994,6 @@ Discard all bidirectional frames.
@item nokey
 Discard all frames excepts keyframes.
@item nointra
 Discard all frames except I frames.
@item all
 Discard all frames.
@end table
@@ -749,17 +1003,38 @@ Default value is @samp{default}.
@item bidir_refine @var{integer} (@emph{encoding,video})
 Refine the two motion vectors used in bidirectional macroblocks.
@item brd_scale @var{integer} (@emph{encoding,video})
 Downscale frames for dynamic B-frame decision.
@item keyint_min @var{integer} (@emph{encoding,video})
 Set minimum interval between IDR-frames.
@item refs @var{integer} (@emph{encoding,video})
 Set reference frames to consider for motion compensation.
@item chromaoffset @var{integer} (@emph{encoding,video})
 Set chroma qp offset from luma.
@item trellis @var{integer} (@emph{encoding,audio,video})
 Set rate-distortion optimal quantization.
@item sc_factor @var{integer} (@emph{encoding,video})
 Set value multiplied by qscale for each frame and added to
 scene_change_score.
@item mv0_threshold @var{integer} (@emph{encoding,video})
@item b_sensitivity @var{integer} (@emph{encoding,video})
 Adjust sensitivity of b_frame_strategy 1.
@item compression_level @var{integer} (@emph{encoding,audio,video})
@item min_prediction_order @var{integer} (@emph{encoding,audio})
@item max_prediction_order @var{integer} (@emph{encoding,audio})
@item timecode_frame_start @var{integer} (@emph{encoding,video})
 Set GOP timecode frame start number, in non drop frame format.
@item request_channels @var{integer} (@emph{decoding,audio})
 Set desired number of audio channels.
@item bits_per_raw_sample @var{integer}
@item channel_layout @var{integer} (@emph{decoding/encoding,audio})
@@ -774,34 +1049,7 @@ Possible values:
@item rc_max_vbv_use @var{float} (@emph{encoding,video})
@item rc_min_vbv_use @var{float} (@emph{encoding,video})
@item ticks_per_frame @var{integer} (@emph{decoding/encoding,audio,video})
@item color_primaries @var{integer} (@emph{decoding/encoding,video})
 Possible values:
@table @samp
@item bt709
 BT.709
@item bt470m
 BT.470 M
@item bt470bg
 BT.470 BG
@item smpte170m
 SMPTE 170 M
@item smpte240m
 SMPTE 240 M
@item film
 Film
@item bt2020
 BT.2020
@item smpte428
@item smpte428_1
 SMPTE ST 428-1
@item smpte431
 SMPTE 431-2
@item smpte432
 SMPTE 432-1
@item jedec-p22
 JEDEC P22
@end table
@item color_trc @var{integer} (@emph{decoding/encoding,video})
 Possible values:
@@ -812,104 +1060,35 @@ BT.709
 BT.470 M
@item gamma28
 BT.470 BG
@item smpte170m
 SMPTE 170 M
@item smpte240m
 SMPTE 240 M
@item linear
-Linear
+SMPTE 170 M
@item log
-@item log100
+SMPTE 240 M
 Log
@item log_sqrt
-@item log316
+Linear
 Log square root
@item iec61966_2_4
-@item iec61966-2-4
+Log
 IEC 61966-2-4
@item bt1361
-@item bt1361e
+Log square root
 BT.1361
@item iec61966_2_1
-@item iec61966-2-1
+IEC 61966-2-4
 IEC 61966-2-1
@item bt2020_10
@item bt2020_10bit
-BT.2020 - 10 bit
+BT.1361
@item bt2020_12
@item bt2020_12bit
-BT.2020 - 12 bit
+IEC 61966-2-1
@item smpte2084
-SMPTE ST 2084
+BT.2020 - 10 bit
@item smpte428
@item smpte428_1
-SMPTE ST 428-1
+BT.2020 - 12 bit
@item arib-std-b67
 ARIB STD-B67
@end table
@item colorspace @var{integer} (@emph{decoding/encoding,video})
 Possible values:
@table @samp
@item rgb
 RGB
@item bt709
 BT.709
@item fcc
 FCC
@item bt470bg
 BT.470 BG
@item smpte170m
 SMPTE 170 M
@item smpte240m
 SMPTE 240 M
@item ycocg
 YCOCG
@item bt2020nc
@item bt2020_ncl
 BT.2020 NCL
@item bt2020c
@item bt2020_cl
 BT.2020 CL
@item smpte2085
 SMPTE 2085
@item chroma-derived-nc
 Chroma-derived NCL
@item chroma-derived-c
 Chroma-derived CL
@item ictcp
 ICtCp
@end table
@item color_range @var{integer} (@emph{decoding/encoding,video})
 If used as input parameter, it serves as a hint to the decoder, which
 color_range the input has.
 Possible values:
@table @samp
@item tv
@item mpeg
 MPEG (219*2^(n-8))
@item pc
@item jpeg
 JPEG (2^n-1)
@end table
@item chroma_sample_location @var{integer} (@emph{decoding/encoding,video})
 Possible values:
@table @samp
@item left
@item center
@item topleft
@item top
@item bottomleft
@item bottom
@end table
@item log_level_offset @var{integer}
 Set the log level offset.
@@ -988,37 +1167,23 @@ Interlaced video, top coded first, bottom displayed first
 Interlaced video, bottom coded first, top displayed first
@end table
-@item skip_alpha @var{bool} (@emph{decoding,video})
+@item skip_alpha @var{integer} (@emph{decoding,video})
 Set to 1 to disable processing alpha (transparency). This works like the
@samp{gray} flag in the @option{flags} option which skips chroma information
 instead of alpha. Default is 0.
@item codec_whitelist @var{list} (@emph{input})
-"," separated list of allowed decoders. By default all are allowed.
+"," separated List of allowed decoders. By default all are allowed.
@item dump_separator @var{string} (@emph{input})
 Separator used to separate the fields printed on the command line about the
 Stream parameters.
-For example, to separate the fields with newlines and indentation:
+For example to separate the fields with newlines and indention:
@example
 ffprobe -dump_separator "
                          "  -i ~/videos/matrixbench_mpeg2.mpg
@end example
@item max_pixels @var{integer} (@emph{decoding/encoding,video})
 Maximum number of pixels per image. This value can be used to avoid out of
 memory failures due to large images.
@item apply_cropping @var{bool} (@emph{decoding,video})
 Enable cropping if cropping parameters are multiples of the required
 alignment for the left and top parameters. If the alignment is not met the
 cropping will be partially applied to maintain alignment.
 Default is 1 (enabled).
 Note: The required alignment depends on if @code{AV_CODEC_FLAG_UNALIGNED} is set and the
 CPU. @code{AV_CODEC_FLAG_UNALIGNED} cannot be changed from the command line. Also hardware
 decoders will not apply left/top Cropping.
@end table
@c man end CODEC OPTIONS
--- a/doc/decoders.texi
+++ b/doc/decoders.texi
@@ -25,18 +25,12 @@ enabled decoders.
 A description of some of the currently available video decoders
 follows.
-@section av1
+@section hevc
-AOMedia Video 1 (AV1) decoder.
+HEVC / H.265 decoder.
-@subsection Options
+Note: the @option{skip_loop_filter} option has effect only at level
-
+@code{all}.
@table @option
@item operating_point
 Select an operating point of a scalable AV1 bitstream (0 - 31). Default is 0.
@end table
@section rawvideo
@@ -60,72 +54,6 @@ top-field-first is assumed
@end table
@section libdav1d
 dav1d AV1 decoder.
 libdav1d allows libavcodec to decode the AOMedia Video 1 (AV1) codec.
 Requires the presence of the libdav1d headers and library during configuration.
 You need to explicitly configure the build with @code{--enable-libdav1d}.
@subsection Options
 The following options are supported by the libdav1d wrapper.
@table @option
@item framethreads
 Set amount of frame threads to use during decoding. The default value is 0 (autodetect).
 This option is deprecated for libdav1d >= 1.0 and will be removed in the future. Use the
 global option @code{threads} instead.
@item tilethreads
 Set amount of tile threads to use during decoding. The default value is 0 (autodetect).
 This option is deprecated for libdav1d >= 1.0 and will be removed in the future. Use the
 global option @code{threads} instead.
@item filmgrain
 Apply film grain to the decoded video if present in the bitstream. Defaults to the
 internal default of the library.
 This option is deprecated and will be removed in the future. See the global option
@code{export_side_data} to export Film Grain parameters instead of applying it.
@item oppoint
 Select an operating point of a scalable AV1 bitstream (0 - 31). Defaults to the
 internal default of the library.
@item alllayers
 Output all spatial layers of a scalable AV1 bitstream. The default value is false.
@end table
@section libdavs2
 AVS2-P2/IEEE1857.4 video decoder wrapper.
 This decoder allows libavcodec to decode AVS2 streams with davs2 library.
@c man end VIDEO DECODERS
@section libuavs3d
 AVS3-P2/IEEE1857.10 video decoder.
 libuavs3d allows libavcodec to decode AVS3 streams.
 Requires the presence of the libuavs3d headers and library during configuration.
 You need to explicitly configure the build with @code{--enable-libuavs3d}.
@subsection Options
 The following option is supported by the libuavs3d wrapper.
@table @option
@item frame_threads
 Set amount of frame threads to use during decoding. The default value is 0 (autodetect).
@end table
@c man end VIDEO DECODERS
@chapter Audio Decoders
@@ -147,7 +75,7 @@ the undocumented RealAudio 3 (a.k.a. dnet).
@item -drc_scale @var{value}
 Dynamic Range Scale Factor. The factor to apply to dynamic range values
-from the AC-3 stream. This factor is applied exponentially. The default value is 1.
+from the AC-3 stream. This factor is applied exponentially.
 There are 3 notable scale factor ranges:
@table @option
@item drc_scale == 0
@@ -181,7 +109,7 @@ correctly by using lavc's old buggy lpc logic for decoding.
@section ffwavesynth
-Internal wave synthesizer.
+Internal wave synthetizer.
 This decoder generates wave patterns according to predefined sequences. Its
 use is purely internal and the format of the data it accepts is not publicly
@@ -267,31 +195,6 @@ without this library.
@chapter Subtitles Decoders
@c man begin SUBTILES DECODERS
@section libaribb24
 ARIB STD-B24 caption decoder.
 Implements profiles A and C of the ARIB STD-B24 standard.
@subsection libaribb24 Decoder Options
@table @option
@item -aribb24-base-path @var{path}
 Sets the base path for the libaribb24 library. This is utilized for reading of
 configuration files (for custom unicode conversions), and for dumping of
 non-text symbols as images under that location.
 Unset by default.
@item -aribb24-skip-ruby-text @var{boolean}
 Tells the decoder wrapper to skip text blocks that contain half-height ruby
 text.
 Enabled by default.
@end table
@section dvbsub
@subsection Options
@@ -299,8 +202,6 @@ Enabled by default.
@table @option
@item compute_clut
@table @option
@item -2
 Compute clut once if no matching CLUT is in the stream.
@item -1
 Compute clut if no matching CLUT is in the stream.
@item 0
@@ -329,7 +230,7 @@ palette is stored in the IFO file, and therefore not available when reading
 from dumped VOB files.
 The format for this option is a string containing 16 24-bits hexadecimal
-numbers (without 0x prefix) separated by commas, for example @code{0d00ee,
+numbers (without 0x prefix) separated by comas, for example @code{0d00ee,
 ee450d, 101010, eaeaea, 0ce60b, ec14ed, ebff0b, 0d617a, 7b7b7b, d1d1d1,
 7b2a0e, 0d950c, 0f007b, cf0dec, cfa80c, 7c127b}.
@@ -354,30 +255,18 @@ configuration. You need to explicitly configure the build with
@table @option
@item txt_page
-List of teletext page numbers to decode. Pages that do not match the specified
+List of teletext page numbers to decode. You may use the special * string to
-list are dropped. You may use the special @code{*} string to match all pages,
+match all pages. Pages that do not match the specified list are dropped.
 or @code{subtitle} to match all subtitle pages.
 Default value is *.
@item txt_default_region
 Set default character set used for decoding, a value between 0 and 87 (see
 ETS 300 706, Section 15, Table 32). Default value is -1, which does not
 override the libzvbi default. This option is needed for some legacy level 1.0
 transmissions which cannot signal the proper charset.
@item txt_chop_top
 Discards the top teletext line. Default value is 1.
@item txt_format
-Specifies the format of the decoded subtitles.
+Specifies the format of the decoded subtitles. The teletext decoder is capable
-@table @option
+of decoding the teletext pages to bitmaps or to simple text, you should use
-@item bitmap
+"bitmap" for teletext pages, because certain graphics and colors cannot be
-The default format, you should use this for teletext pages, because certain
+expressed in simple text. You might use "text" for teletext based subtitles if
-graphics and colors cannot be expressed in simple text or even ASS.
+your application can handle simple text based subtitles. Default value is
-@item text
+bitmap.
 Simple text based output without formatting.
@item ass
 Formatted ASS output, subtitle pages and teletext pages are returned in
 different styles, subtitle pages are stripped down to text, but an effort is
 made to keep the text alignment and the formatting.
@end table
@item txt_left
 X offset of generated bitmaps, default is 0.
@item txt_top
@@ -386,12 +275,11 @@ Y offset of generated bitmaps, default is 0.
 Chops leading and trailing spaces and removes empty lines from the generated
 text. This option is useful for teletext based subtitles where empty spaces may
 be present at the start or at the end of the lines or empty lines may be
-present between the subtitle lines because of double-sized teletext characters.
+present between the subtitle lines because of double-sized teletext charactes.
 Default value is 1.
@item txt_duration
 Sets the display duration of the decoded teletext pages or subtitles in
-milliseconds. Default value is -1 which means infinity or until the next
+miliseconds. Default value is 30000 which is 30 seconds.
 subtitle event comes.
@item txt_transparent
 Force transparent background of the generated teletext bitmaps. Default value
 is 0 which means an opaque background.
--- a/doc/demuxers.texi
+++ b/doc/demuxers.texi
@@ -13,9 +13,8 @@ You can disable all the demuxers using the configure option
 the option @code{--enable-demuxer=@var{DEMUXER}}, or disable it
 with the option @code{--disable-demuxer=@var{DEMUXER}}.
-The option @code{-demuxers} of the ff* tools will display the list of
+The option @code{-formats} of the ff* tools will display the list of
-enabled demuxers. Use @code{-formats} to view a combined list of
+enabled demuxers.
 enabled demuxers and muxers.
 The description of some of the currently available demuxers follows.
@@ -25,12 +24,16 @@ Audible Format 2, 3, and 4 demuxer.
 This demuxer is used to demux Audible Format 2, 3, and 4 (.aa) files.
-@section aac
+@section applehttp
-Raw Audio Data Transport Stream AAC demuxer.
+Apple HTTP Live Streaming demuxer.
-This demuxer is used to demux an ADTS input containing a single AAC stream
+This demuxer presents all AVStreams from all variant streams.
-alongwith any ID3v1/2 or APE tags in it.
+The id field is set to the bitrate variant index number. By setting
 the discard flags on AVStreams (by pressing 'a' or 'v' in ffplay),
 the caller can decide which variant streams to actually receive.
 The total bitrate of the variant that the stream belongs to is
 available in a metadata key named "variant_bitrate".
@section apng
@@ -44,15 +47,12 @@ between the last fcTL and IEND chunks.
@table @option
@item -ignore_loop @var{bool}
-Ignore the loop variable in the file if set. Default is enabled.
+Ignore the loop variable in the file if set.
@item -max_fps @var{int}
-Maximum framerate in frames per second. Default of 0 imposes no limit.
+Maximum framerate in frames per second (0 for no limit).
@item -default_fps @var{int}
 Default framerate in frames per second when none is specified in the file
-(0 meaning as fast as possible). Default is 15.
+(0 meaning as fast as possible).
@end table
@section asf
@@ -72,7 +72,7 @@ Do not try to resynchronize by looking for a certain optional start code.
 Virtual concatenation script demuxer.
 This demuxer reads a list of files and other directives from a text file and
-demuxes them one after the other, as if all their packets had been muxed
+demuxes them one after the other, as if all their packet had been muxed
 together.
 The timestamps in the files are adjusted so that the first file starts at 0
@@ -103,10 +103,11 @@ backslash or single quotes.
 All subsequent file-related directives apply to that file.
@item @code{ffconcat version 1.0}
-Identify the script type and version.
+Identify the script type and version. It also sets the @option{safe} option
 to 1 if it was -1.
 To make FFmpeg recognize the format automatically, this directive must
-appear exactly as is (no extra space or byte-order-mark) on the very first
+appears exactly as is (no extra space or byte-order-mark) on the very first
 line of the script.
@item @code{duration @var{dur}}
@@ -157,16 +158,6 @@ directive) will be reduced based on their specified Out point.
 Metadata of the packets of the file. The specified metadata will be set for
 each file packet. You can specify this directive multiple times to add multiple
 metadata entries.
 This directive is deprecated, use @code{file_packet_meta} instead.
@item @code{file_packet_meta @var{key} @var{value}}
 Metadata of the packets of the file. The specified metadata will be set for
 each file packet. You can specify this directive multiple times to add multiple
 metadata entries.
@item @code{option @var{key} @var{value}}
 Option to access, open and probe the file.
 Can be present multiple times.
@item @code{stream}
 Introduce a stream in the virtual file.
@@ -184,20 +175,6 @@ subfiles will be used.
 This is especially useful for MPEG-PS (VOB) files, where the order of the
 streams is not reliable.
@item @code{stream_meta @var{key} @var{value}}
 Metadata for the stream.
 Can be present multiple times.
@item @code{stream_codec @var{value}}
 Codec for the stream.
@item @code{stream_extradata @var{hex_string}}
 Extradata for the string, encoded in hexadecimal.
@item @code{chapter @var{id} @var{start} @var{end}}
 Add a chapter. @var{id} is an unique identifier, possibly small and
 consecutive.
@end table
@subsection Options
@@ -207,8 +184,7 @@ This demuxer accepts the following option:
@table @option
@item safe
-If set to 1, reject unsafe file paths and directives.
+If set to 1, reject unsafe file paths. A file path is considered safe if it
 A file path is considered safe if it
 does not contain a protocol specification and is relative and all components
 only contain characters from the portable character set (letters, digits,
 period, underscore and hyphen) and have no period at the beginning of a
@@ -218,6 +194,9 @@ If set to 0, any file name is accepted.
 The default is 1.
 -1 is equivalent to 1 if the format was automatically
 probed and 0 otherwise.
@item auto_convert
 If set to 1, try to perform automatic conversions on packet data to make the
 streams concatenable.
@@ -264,46 +243,30 @@ file subdir/file-2.wav
@end example
@end itemize
-@section dash
+@section flv
 Dynamic Adaptive Streaming over HTTP demuxer.
 This demuxer presents all AVStreams found in the manifest.
 By setting the discard flags on AVStreams the caller can decide
 which streams to actually receive.
 Each stream mirrors the @code{id} and @code{bandwidth} properties from the
@code{<Representation>} as metadata keys named "id" and "variant_bitrate" respectively.
@section imf
 Interoperable Master Format demuxer.
 This demuxer presents audio and video streams found in an IMF Composition.
@section flv, live_flv, kux
 Adobe Flash Video Format demuxer.
-This demuxer is used to demux FLV files and RTMP network streams. In case of live network streams, if you force format, you may use live_flv option instead of flv to survive timestamp discontinuities.
+This demuxer is used to demux FLV files and RTMP network streams.
 KUX is a flv variant used on the Youku platform.
@example
 ffmpeg -f flv -i myfile.flv ...
 ffmpeg -f live_flv -i rtmp://<any.server>/anything/key ....
@end example
@table @option
@item -flv_metadata @var{bool}
 Allocate the streams according to the onMetaData array content.
@item -flv_ignore_prevtag @var{bool}
 Ignore the size of previous tag value.
@item -flv_full_metadata @var{bool}
 Output all context of the onMetadata.
@end table
@section libgme
 The Game Music Emu library is a collection of video game music file emulators.
 See @url{http://code.google.com/p/game-music-emu/} for more information.
 Some files have multiple tracks. The demuxer will pick the first track by
 default. The @option{track_index} option can be used to select a different
 track. Track indexes start at 0. The demuxer exports the number of tracks as
@var{tracks} meta data entry.
 For very large files, the @option{max_size} option may have to be adjusted.
@section gif
 Animated GIF demuxer.
@@ -343,52 +306,6 @@ used to end the output video at the length of the shortest input file,
 which in this case is @file{input.mp4} as the GIF in this example loops
 infinitely.
@section hls
 HLS demuxer
 Apple HTTP Live Streaming demuxer.
 This demuxer presents all AVStreams from all variant streams.
 The id field is set to the bitrate variant index number. By setting
 the discard flags on AVStreams (by pressing 'a' or 'v' in ffplay),
 the caller can decide which variant streams to actually receive.
 The total bitrate of the variant that the stream belongs to is
 available in a metadata key named "variant_bitrate".
 It accepts the following options:
@table @option
@item live_start_index
 segment index to start live streams at (negative values are from the end).
@item allowed_extensions
 ',' separated list of file extensions that hls is allowed to access.
@item max_reload
 Maximum number of times a insufficient list is attempted to be reloaded.
 Default value is 1000.
@item m3u8_hold_counters
 The maximum number of times to load m3u8 when it refreshes without new segments.
 Default value is 1000.
@item http_persistent
 Use persistent HTTP connections. Applicable only for HTTP streams.
 Enabled by default.
@item http_multiple
 Use multiple HTTP connections for downloading HTTP segments.
 Enabled by default for HTTP/1.1 servers.
@item http_seekable
 Use HTTP partial requests for downloading HTTP segments.
 0 = disable, 1 = enable, -1 = auto, Default is auto.
@item seg_format_options
 Set options for the demuxer of media segments using a list of key=value pairs separated by @code{:}.
@end table
@section image2
 Image file demuxer.
@@ -497,17 +414,6 @@ nanosecond precision.
@item video_size
 Set the video size of the images to read. If not specified the video
 size is guessed from the first image file in the sequence.
@item export_path_metadata
 If set to 1, will add two extra fields to the metadata found in input, making them
 also available for other filters (see @var{drawtext} filter for examples). Default
 value is 0. The extra fields are described below:
@table @option
@item lavf.image2dec.source_path
 Corresponds to the full path to the input file being read.
@item lavf.image2dec.source_basename
 Corresponds to the name of the file being read.
@end table
@end table
@subsection Examples
@@ -535,123 +441,9 @@ ffmpeg -framerate 10 -pattern_type glob -i "*.png" out.mkv
@end example
@end itemize
-@section libgme
+@section mov/mp4/3gp/QuickTime
-The Game Music Emu library is a collection of video game music file emulators.
+QuickTime / MP4 demuxer.
 See @url{https://bitbucket.org/mpyne/game-music-emu/overview} for more information.
 It accepts the following options:
@table @option
@item track_index
 Set the index of which track to demux. The demuxer can only export one track.
 Track indexes start at 0. Default is to pick the first track. Number of tracks
 is exported as @var{tracks} metadata entry.
@item sample_rate
 Set the sampling rate of the exported track. Range is 1000 to 999999. Default is 44100.
@item max_size @emph{(bytes)}
 The demuxer buffers the entire file into memory. Adjust this value to set the maximum buffer size,
 which in turn, acts as a ceiling for the size of files that can be read.
 Default is 50 MiB.
@end table
@section libmodplug
 ModPlug based module demuxer
 See @url{https://github.com/Konstanty/libmodplug}
 It will export one 2-channel 16-bit 44.1 kHz audio stream.
 Optionally, a @code{pal8} 16-color video stream can be exported with or without printed metadata.
 It accepts the following options:
@table @option
@item noise_reduction
 Apply a simple low-pass filter. Can be 1 (on) or 0 (off). Default is 0.
@item reverb_depth
 Set amount of reverb. Range 0-100. Default is 0.
@item reverb_delay
 Set delay in ms, clamped to 40-250 ms. Default is 0.
@item bass_amount
 Apply bass expansion a.k.a. XBass or megabass. Range is 0 (quiet) to 100 (loud). Default is 0.
@item bass_range
 Set cutoff i.e. upper-bound for bass frequencies. Range is 10-100 Hz. Default is 0.
@item surround_depth
 Apply a Dolby Pro-Logic surround effect. Range is 0 (quiet) to 100 (heavy). Default is 0.
@item surround_delay
 Set surround delay in ms, clamped to 5-40 ms. Default is 0.
@item max_size
 The demuxer buffers the entire file into memory. Adjust this value to set the maximum buffer size,
 which in turn, acts as a ceiling for the size of files that can be read. Range is 0 to 100 MiB.
 0 removes buffer size limit (not recommended). Default is 5 MiB.
@item video_stream_expr
 String which is evaluated using the eval API to assign colors to the generated video stream.
 Variables which can be used are @code{x}, @code{y}, @code{w}, @code{h}, @code{t}, @code{speed},
@code{tempo}, @code{order}, @code{pattern} and @code{row}.
@item video_stream
 Generate video stream. Can be 1 (on) or 0 (off). Default is 0.
@item video_stream_w
 Set video frame width in 'chars' where one char indicates 8 pixels. Range is 20-512. Default is 30.
@item video_stream_h
 Set video frame height in 'chars' where one char indicates 8 pixels. Range is 20-512. Default is 30.
@item video_stream_ptxt
 Print metadata on video stream. Includes @code{speed}, @code{tempo}, @code{order}, @code{pattern},
@code{row} and @code{ts} (time in ms). Can be 1 (on) or 0 (off). Default is 1.
@end table
@section libopenmpt
 libopenmpt based module demuxer
 See @url{https://lib.openmpt.org/libopenmpt/} for more information.
 Some files have multiple subsongs (tracks) this can be set with the @option{subsong}
 option.
 It accepts the following options:
@table @option
@item subsong
 Set the subsong index. This can be either  'all', 'auto', or the index of the
 subsong. Subsong indexes start at 0. The default is 'auto'.
 The default value is to let libopenmpt choose.
@item layout
 Set the channel layout. Valid values are 1, 2, and 4 channel layouts.
 The default value is STEREO.
@item sample_rate
 Set the sample rate for libopenmpt to output.
 Range is from 1000 to INT_MAX. The value default is 48000.
@end table
@section mov/mp4/3gp
 Demuxer for Quicktime File Format & ISO/IEC Base Media File Format (ISO/IEC 14496-12 or MPEG-4 Part 12, ISO/IEC 15444-12 or JPEG 2000 Part 12).
 Registered extensions: mov, mp4, m4a, 3gp, 3g2, mj2, psp, m4b, ism, ismv, isma, f4v
@subsection Options
 This demuxer accepts the following options:
@table @option
@@ -662,88 +454,10 @@ Enabling this can theoretically leak information in some use cases.
@item use_absolute_path
 Allows loading of external tracks via absolute paths, disabled by default.
 Enabling this poses a security risk. It should only be enabled if the source
-is known to be non-malicious.
+is known to be non malicious.
@item seek_streams_individually
 When seeking, identify the closest point in each stream individually and demux packets in
 that stream from identified point. This can lead to a different sequence of packets compared
 to demuxing linearly from the beginning. Default is true.
@item ignore_editlist
 Ignore any edit list atoms. The demuxer, by default, modifies the stream index to reflect the
 timeline described by the edit list. Default is false.
@item advanced_editlist
 Modify the stream index to reflect the timeline described by the edit list. @code{ignore_editlist}
 must be set to false for this option to be effective.
 If both @code{ignore_editlist} and this option are set to false, then only the
 start of the stream index is modified to reflect initial dwell time or starting timestamp
 described by the edit list. Default is true.
@item ignore_chapters
 Don't parse chapters. This includes GoPro 'HiLight' tags/moments. Note that chapters are
 only parsed when input is seekable. Default is false.
@item use_mfra_for
 For seekable fragmented input, set fragment's starting timestamp from media fragment random access box, if present.
 Following options are available:
@table @samp
@item auto
 Auto-detect whether to set mfra timestamps as PTS or DTS @emph{(default)}
@item dts
 Set mfra timestamps as DTS
@item pts
 Set mfra timestamps as PTS
@item 0
 Don't use mfra box to set timestamps
@end table
@item use_tfdt
 For fragmented input, set fragment's starting timestamp to @code{baseMediaDecodeTime} from the @code{tfdt} box.
 Default is enabled, which will prefer to use the @code{tfdt} box to set DTS. Disable to use the @code{earliest_presentation_time} from the @code{sidx} box.
 In either case, the timestamp from the @code{mfra} box will be used if it's available and @code{use_mfra_for} is
 set to pts or dts.
@item export_all
 Export unrecognized boxes within the @var{udta} box as metadata entries. The first four
 characters of the box type are set as the key. Default is false.
@item export_xmp
 Export entire contents of @var{XMP_} box and @var{uuid} box as a string with key @code{xmp}. Note that
 if @code{export_all} is set and this option isn't, the contents of @var{XMP_} box are still exported
 but with key @code{XMP_}. Default is false.
@item activation_bytes
 4-byte key required to decrypt Audible AAX and AAX+ files. See Audible AAX subsection below.
@item audible_fixed_key
 Fixed key used for handling Audible AAX/AAX+ files. It has been pre-set so should not be necessary to
 specify.
@item decryption_key
 16-byte key, in hex, to decrypt files encrypted using ISO Common Encryption (CENC/AES-128 CTR; ISO/IEC 23001-7).
@item max_stts_delta
 Very high sample deltas written in a trak's stts box may occasionally be intended but usually they are written in
 error or used to store a negative value for dts correction when treated as signed 32-bit integers. This option lets
 the user set an upper limit, beyond which the delta is clamped to 1. Values greater than the limit if negative when
 cast to int32 are used to adjust onward dts.
 Unit is the track time scale. Range is 0 to UINT_MAX. Default is @code{UINT_MAX - 48000*10} which allows upto
 a 10 second dts correction for 48 kHz audio streams while accommodating 99.9% of @code{uint32} range.
@end table
@subsection Audible AAX
 Audible AAX files are encrypted M4B files, and they can be decrypted by specifying a 4 byte activation secret.
@example
 ffmpeg -activation_bytes 1CEB00DA -i test.aax -vn -c:a copy output.mp4
@end example
@section mpegts
 MPEG-2 transport stream demuxer.
@@ -754,9 +468,6 @@ This demuxer accepts the following options:
 Set size limit for looking up a new synchronization. Default value is
 65536.
@item skip_unknown_pmt
 Skip PMTs for programs not defined in the PAT. Default value is 0.
@item fix_teletext_pts
 Override teletext packet PTS and DTS values with the timestamps calculated
 from the PCR of the first program which the teletext stream is part of and is
@@ -771,10 +482,6 @@ Show the detected raw packet size, cannot be set by the user.
 Scan and combine all PMTs. The value is an integer with value from -1
 to 1 (-1 means automatic setting, 1 means enabled, 0 means
 disabled). Default value is -1.
@item merge_pmt_versions
 Re-use existing streams when a PMT's version is updated and elementary
 streams move to different PIDs. Default value is 0.
@end table
@section mpjpeg
@@ -872,20 +579,4 @@ Example: convert the captions to a format most players understand:
 ffmpeg -i http://www.ted.com/talks/subtitles/id/1/lang/en talk1-en.srt
@end example
@section vapoursynth
 Vapoursynth wrapper.
 Due to security concerns, Vapoursynth scripts will not
 be autodetected so the input format has to be forced. For ff* CLI tools,
 add @code{-f vapoursynth} before the input @code{-i yourscript.vpy}.
 This demuxer accepts the following option:
@table @option
@item max_script_size
 The demuxer buffers the entire script into memory. Adjust this value to set the maximum buffer size,
 which in turn, acts as a ceiling for the size of scripts that can be read.
 Default is 1 MiB.
@end table
@c man end DEMUXERS
--- a/doc/dev_community/community.md
+++ b/doc/dev_community/community.md
@@ -1,79 +0,0 @@
 # FFmpeg project
 ## Organisation
 The FFmpeg project is organized through a community working on global consensus.
 Decisions are taken by the ensemble of active members, through voting and
 are aided by two committees.
 ## General Assembly
 The ensemble of active members is called the General Assembly (GA).
 The General Assembly is sovereign and legitimate for all its decisions
 regarding the FFmpeg project.
 The General Assembly is made up of active contributors.
 Contributors are considered "active contributors" if they have pushed more
 than 20 patches in the last 36 months in the main FFmpeg repository, or
 if they have been voted in by the GA.
 Additional members are added to the General Assembly through a vote after
 proposal by a member of the General Assembly.
 They are part of the GA for two years, after which they need a confirmation by
 the GA.
 ## Voting
 Voting is done using a ranked voting system, currently running on https://vote.ffmpeg.org/ .
 Majority vote means more than 50% of the expressed ballots.
 ## Technical Committee
 The Technical Committee (TC) is here to arbitrate and make decisions when
 technical conflicts occur in the project.
 They will consider the merits of all the positions, judge them and make a
 decision.
 The TC resolves technical conflicts but is not a technical steering committee.
 Decisions by the TC are binding for all the contributors.
 Decisions made by the TC can be re-opened after 1 year or by a majority vote
 of the General Assembly, requested by one of the member of the GA.
 The TC is elected by the General Assembly for a duration of 1 year, and
 is composed of 5 members.
 Members can be re-elected if they wish. A majority vote in the General Assembly
 can trigger a new election of the TC.
 The members of the TC can be elected from outside of the GA.
 Candidates for election can either be suggested or self-nominated.
 The conflict resolution process is detailed in the [resolution process](resolution_process.md) document.
 ## Community committee
 The Community Committee (CC) is here to arbitrage and make decisions when
 inter-personal conflicts occur in the project. It will decide quickly and
 take actions, for the sake of the project.
 The CC can remove privileges of offending members, including removal of
 commit access and temporary ban from the community.
 Decisions made by the CC can be re-opened after 1 year or by a majority vote
 of the General Assembly. Indefinite bans from the community must be confirmed
 by the General Assembly, in a majority vote.
 The CC is elected by the General Assembly for a duration of 1 year, and is
 composed of 5 members.
 Members can be re-elected if they wish. A majority vote in the General Assembly
 can trigger a new election of the CC.
 The members of the CC can be elected from outside of the GA.
 Candidates for election can either be suggested or self-nominated.
 The CC is governed by and responsible for enforcing the Code of Conduct.
--- a/doc/dev_community/resolution_process.md
+++ b/doc/dev_community/resolution_process.md
@@ -1,91 +0,0 @@
 # Technical Committee
 _This document only makes sense with the rules from [the community document](community)_.
 The Technical Committee (**TC**) is here to arbitrate and make decisions when
 technical conflicts occur in the project.
 The TC main role is to resolve technical conflicts.
 It is therefore not a technical steering committee, but it is understood that
 some decisions might impact the future of the project.
 # Process
 ## Seizing
 The TC can take possession of any technical matter that it sees fit.
 To involve the TC in a matter, email tc@ or CC them on an ongoing discussion.
 As members of TC are developers, they also can email tc@ to raise an issue.
 ## Announcement
 The TC, once seized, must announce itself on the main mailing list, with a _[TC]_ tag.
 The TC has 2 modes of operation: a RFC one and an internal one.
 If the TC thinks it needs the input from the larger community, the TC can call
 for a RFC. Else, it can decide by itself.
 If the disagreement involves a member of the TC, that member should recuse
 themselves from the decision.
 The decision to use a RFC process or an internal discussion is a discretionary
 decision of the TC.
 The TC can also reject a seizure for a few reasons such as:
 the matter was not discussed enough previously; it lacks expertise to reach a
 beneficial decision on the matter; or the matter is too trivial.
 ### RFC call
 In the RFC mode, one person from the TC posts on the mailing list the
 technical question and will request input from the community.
 The mail will have the following specification:
 * a precise title
 * a specific tag [TC RFC]
 * a top-level email
 * contain a precise question that does not exceed 100 words and that is answerable by developers
 * may have an extra description, or a link to a previous discussion, if deemed necessary,
 * contain a precise end date for the answers.
 The answers from the community must be on the main mailing list and must have
 the following specification:
 * keep the tag and the title unchanged
 * limited to 400 words
 * a first-level, answering directly to the main email
 * answering to the question.
 Further replies to answers are permitted, as long as they conform to the
 community standards of politeness, they are limited to 100 words, and are not
 nested more than once. (max-depth=2)
 After the end-date, mails on the thread will be ignored.
 Violations of those rules will be escalated through the Community Committee.
 After all the emails are in, the TC has 96 hours to give its final decision.
 Exceptionally, the TC can request an extra delay, that will be notified on the
 mailing list.
 ### Within TC
 In the internal case, the TC has 96 hours to give its final decision.
 Exceptionally, the TC can request an extra delay.
 ## Decisions
 The decisions from the TC will be sent on the mailing list, with the _[TC]_ tag.
 Internally, the TC should take decisions with a majority, or using
 ranked-choice voting.
 The decision from the TC should be published with a summary of the reasons that
 lead to this decision.
 The decisions from the TC are final, until the matters are reopened after
 no less than one year.
--- a/doc/developer.texi
+++ b/doc/developer.texi
@@ -10,7 +10,9 @@
@contents
-@chapter Notes for external developers
+@chapter Developers Guide
@section Notes for external developers
 This document is mostly useful for internal FFmpeg developers.
 External developers who need to use the API in their application should
@@ -28,13 +30,15 @@ For more detailed legal information about the use of FFmpeg in
 external programs read the @file{LICENSE} file in the source tree and
 consult @url{https://ffmpeg.org/legal.html}.
-@chapter Contributing
+@section Contributing
-There are 2 ways by which code gets into FFmpeg:
+There are 3 ways by which code gets into FFmpeg.
@itemize @bullet
-@item Submitting patches to the ffmpeg-devel mailing list.
+@item Submitting patches to the main developer mailing list.
      See @ref{Submitting patches} for details.
@item Directly committing changes to the main tree.
@item Committing changes to a git clone, for example on github.com or
      gitorious.org. And asking us to merge these changes.
@end itemize
 Whichever way, changes should be reviewed by the maintainer of the code
@@ -43,9 +47,9 @@ The developer making the commit and the author are responsible for their changes
 and should try to fix issues their commit causes.
@anchor{Coding Rules}
-@chapter Coding Rules
+@section Coding Rules
-@section Code formatting conventions
+@subsection Code formatting conventions
 There are the following guidelines regarding the indentation in files:
@@ -70,7 +74,7 @@ The presentation is one inspired by 'indent -i4 -kr -nut'.
 The main priority in FFmpeg is simplicity and small code size in order to
 minimize the bug count.
-@section Comments
+@subsection Comments
 Use the JavaDoc/Doxygen  format (see examples below) so that code documentation
 can be generated automatically. All nontrivial functions should have a comment
 above them explaining what the function does, even if it is just one sentence.
@@ -110,7 +114,7 @@ int myfunc(int my_parameter)
 ...
@end example
-@section C language features
+@subsection C language features
 FFmpeg is programmed in the ISO C90 language with a few additional
 features from ISO C99, namely:
@@ -127,17 +131,6 @@ designated struct initializers (@samp{struct s x = @{ .i = 17 @};});
@item
 compound literals (@samp{x = (struct s) @{ 17, 23 @};}).
@item
 for loops with variable definition (@samp{for (int i = 0; i < 8; i++)});
@item
 Variadic macros (@samp{#define ARRAY(nb, ...) (int[nb + 1])@{ nb, __VA_ARGS__ @}});
@item
 Implementation defined behavior for signed integers is assumed to match the
 expected behavior for two's complement. Non representable values in integer
 casts are binary truncated. Shift right of signed values uses sign extension.
@end itemize
 These features are supported by all compilers we care about, so we will not
@@ -162,7 +155,7 @@ mixing statements and declarations;
 GCC statement expressions (@samp{(x = (@{ int y = 4; y; @})}).
@end itemize
-@section Naming conventions
+@subsection Naming conventions
 All names should be composed with underscores (_), not CamelCase. For example,
@samp{avfilter_get_video_buffer} is an acceptable function name and
@samp{AVFilterGetVideo} is not. The exception from this are type names, like
@@ -186,7 +179,7 @@ e.g. @samp{ff_w64_demuxer}.
@item
 For variables and functions visible outside of file scope, used internally
 across multiple libraries, use @code{avpriv_} as prefix, for example,
-@samp{avpriv_report_missing_feature}.
+@samp{avpriv_aac_parse_header}.
@item
 Each library has its own prefix for public symbols, in addition to the
@@ -206,7 +199,7 @@ letter as they are reserved by the C standard. Names starting with @code{_}
 are reserved at the file level and may not be used for externally visible
 symbols. If in doubt, just avoid names starting with @code{_} altogether.
-@section Miscellaneous conventions
+@subsection Miscellaneous conventions
@itemize @bullet
@item
@@ -218,7 +211,7 @@ Casts should be used only when necessary. Unneeded parentheses
 should also be avoided if they don't make the code easier to understand.
@end itemize
-@section Editor configuration
+@subsection Editor configuration
 In order to configure Vim to follow FFmpeg formatting conventions, paste
 the following snippet into your @file{.vimrc}:
@example
@@ -251,10 +244,10 @@ For Emacs, add these roughly equivalent lines to your @file{.emacs.d/init.el}:
 (setq c-default-style "ffmpeg")
@end lisp
-@chapter Development Policy
+@section Development Policy
-@section Patches/Committing
+@enumerate
-@subheading Licenses for patches must be compatible with FFmpeg.
+@item
 Contributions should be licensed under the
@uref{http://www.gnu.org/licenses/lgpl-2.1.html, LGPL 2.1},
 including an "or any later version" clause, or, if you prefer
@@ -267,15 +260,15 @@ preferred.
 If you add a new file, give it a proper license header. Do not copy and
 paste it from a random place, use an existing file as template.
-@subheading You must not commit code which breaks FFmpeg!
+@item
-This means unfinished code which is enabled and breaks compilation,
+You must not commit code which breaks FFmpeg! (Meaning unfinished but
-or compiles but does not work/breaks the regression tests. Code which
+enabled code which breaks compilation or compiles but does not work or
-is unfinished but disabled may be permitted under-circumstances, like
+breaks the regression tests)
-missing samples or an implementation with a small subset of features.
+You can commit unfinished stuff (for testing etc), but it must be disabled
-Always check the mailing list for any reviewers with issues and test
+(#ifdef etc) by default so it does not interfere with other developers'
-FATE before you push.
+work.
-@subheading Keep the main commit message short with an extended description below.
+@item
 The commit message should have a short first line in the form of
 a @samp{topic: short description} as a header, separated by a newline
 from the body consisting of an explanation of why the change is necessary.
@@ -283,24 +276,30 @@ If the commit fixes a known bug on the bug tracker, the commit message
 should include its bug ID. Referring to the issue on the bug tracker does
 not exempt you from writing an excerpt of the bug in the commit message.
-@subheading Testing must be adequate but not excessive.
+@item
-If it works for you, others, and passes FATE then it should be OK to commit
+You do not have to over-test things. If it works for you, and you think it
-it, provided it fits the other committing criteria. You should not worry about
+should work for others, then commit. If your code has problems
-over-testing things. If your code has problems (portability, triggers
+(portability, triggers compiler bugs, unusual environment etc) they will be
-compiler bugs, unusual environment etc) they will be reported and eventually
+reported and eventually fixed.
 fixed.
-@subheading Do not commit unrelated changes together.
+@item
-They should be split them into self-contained pieces. Also do not forget
+Do not commit unrelated changes together, split them into self-contained
-that if part B depends on part A, but A does not depend on B, then A can
+pieces. Also do not forget that if part B depends on part A, but A does not
-and should be committed first and separate from B. Keeping changes well
+depend on B, then A can and should be committed first and separate from B.
-split into self-contained parts makes reviewing and understanding them on
+Keeping changes well split into self-contained parts makes reviewing and
-the commit log mailing list easier. This also helps in case of debugging
+understanding them on the commit log mailing list easier. This also helps
-later on.
+in case of debugging later on.
 Also if you have doubts about splitting or not splitting, do not hesitate to
 ask/discuss it on the developer mailing list.
-@subheading Ask before you change the build system (configure, etc).
+@item
 Do not change behavior of the programs (renaming options etc) or public
 API or ABI without first discussing it on the ffmpeg-devel mailing list.
 Do not remove functionality from the code. Just improve!
 Note: Redundant code can be removed.
@item
 Do not commit changes to the build system (Makefiles, configure script)
 which change behavior, defaults etc, without asking first. The same
 applies to compiler warning fixes, trivial looking fixes and to code
@@ -309,7 +308,7 @@ the way we do. Send your changes as patches to the ffmpeg-devel mailing
 list, and if the code maintainers say OK, you may commit. This does not
 apply to files you wrote and/or maintain.
-@subheading Cosmetic changes should be kept in separate patches.
+@item
 We refuse source indentation and other cosmetic changes if they are mixed
 with functional changes, such commits will be rejected and removed. Every
 developer has his own indentation style, you should not change it. Of course
@@ -323,7 +322,7 @@ NOTE: If you had to put if()@{ .. @} over a large (> 5 lines) chunk of code,
 then either do NOT change the indentation of the inner part within (do not
 move it to the right)! or do so in a separate commit
-@subheading Commit messages should always be filled out properly.
+@item
 Always fill out the commit log message. Describe in a few lines what you
 changed and why. You can refer to mailing list postings if you fix a
 particular bug. Comments such as "fixed!" or "Changed it." are unacceptable.
@@ -335,31 +334,47 @@ area changed: Short 1 line description
 details describing what and why and giving references.
@end example
-@subheading Credit the author of the patch.
+@item
 Make sure the author of the commit is set correctly. (see git commit --author)
 If you apply a patch, send an
 answer to ffmpeg-devel (or wherever you got the patch from) saying that
 you applied the patch.
-@subheading Complex patches should refer to discussion surrounding them.
+@item
 When applying patches that have been discussed (at length) on the mailing
 list, reference the thread in the log message.
-@subheading Always wait long enough before pushing changes
+@item
 Do NOT commit to code actively maintained by others without permission.
-Send a patch to ffmpeg-devel. If no one answers within a reasonable
+Send a patch to ffmpeg-devel instead. If no one answers within a reasonable
-time-frame (12h for build failures and security fixes, 3 days small changes,
+timeframe (12h for build failures and security fixes, 3 days small changes,
 1 week for big patches) then commit your patch if you think it is OK.
 Also note, the maintainer can simply ask for more time to review!
-@section Code
+@item
-@subheading API/ABI changes should be discussed before they are made.
+Subscribe to the ffmpeg-cvslog mailing list. The diffs of all commits
-Do not change behavior of the programs (renaming options etc) or public
+are sent there and reviewed by all the other developers. Bugs and possible
-API or ABI without first discussing it on the ffmpeg-devel mailing list.
+improvements or general questions regarding commits are discussed there. We
-Do not remove widely used functionality or features (redundant code can be removed).
+expect you to react if problems with your code are uncovered.
-@subheading Remember to check if you need to bump versions for libav*.
+@item
-Depending on the change, you may need to change the version integer.
+Update the documentation if you change behavior or add features. If you are
 unsure how best to do this, send a patch to ffmpeg-devel, the documentation
 maintainer(s) will review and commit your stuff.
@item
 Try to keep important discussions and requests (also) on the public
 developer mailing list, so that all developers can benefit from them.
@item
 Never write to unallocated memory, never write over the end of arrays,
 always check values read from some untrusted source before using them
 as array index or other risky things.
@item
 Remember to check if you need to bump versions for the specific libav*
 parts (libavutil, libavcodec, libavformat) you are changing. You need
 to change the version integer.
 Incrementing the first component means no backward compatibility to
 previous versions (e.g. removal of a function from the public API).
 Incrementing the second component means backward compatible change
@@ -369,7 +384,7 @@ Incrementing the third component means a noteworthy binary compatible
 change (e.g. encoder bug fix that matters for the decoder). The third
 component always starts at 100 to distinguish FFmpeg from Libav.
-@subheading Warnings for correct code may be disabled if there is no other option.
+@item
 Compiler warnings indicate potential bugs or code with bad style. If a type of
 warning always points to correct and clean code, that warning should
 be disabled, not the code changed.
@@ -378,54 +393,17 @@ If it is a bug, the bug has to be fixed. If it is not, the code should
 be changed to not generate a warning unless that causes a slowdown
 or obfuscates the code.
-@subheading Check untrusted input properly.
+@item
 Never write to unallocated memory, never write over the end of arrays,
 always check values read from some untrusted source before using them
 as array index or other risky things.
@section Documentation/Other
@subheading Subscribe to the ffmpeg-devel mailing list.
 It is important to be subscribed to the
@uref{https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-devel, ffmpeg-devel}
 mailing list. Almost any non-trivial patch is to be sent there for review.
 Other developers may have comments about your contribution. We expect you see
 those comments, and to improve it if requested. (N.B. Experienced committers
 have other channels, and may sometimes skip review for trivial fixes.) Also,
 discussion here about bug fixes and FFmpeg improvements by other developers may
 be helpful information for you. Finally, by being a list subscriber, your
 contribution will be posted immediately to the list, without the moderation
 hold which messages from non-subscribers experience.
 However, it is more important to the project that we receive your patch than
 that you be subscribed to the ffmpeg-devel list. If you have a patch, and don't
 want to subscribe and discuss the patch, then please do send it to the list
 anyway.
@subheading Subscribe to the ffmpeg-cvslog mailing list.
 Diffs of all commits are sent to the
@uref{https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-cvslog, ffmpeg-cvslog}
 mailing list. Some developers read this list to review all code base changes
 from all sources. Subscribing to this list is not mandatory.
@subheading Keep the documentation up to date.
 Update the documentation if you change behavior or add features. If you are
 unsure how best to do this, send a patch to ffmpeg-devel, the documentation
 maintainer(s) will review and commit your stuff.
@subheading Important discussions should be accessible to all.
 Try to keep important discussions and requests (also) on the public
 developer mailing list, so that all developers can benefit from them.
@subheading Check your entries in MAINTAINERS.
 Make sure that no parts of the codebase that you maintain are missing from the
@file{MAINTAINERS} file. If something that you want to maintain is missing add it with
 your name after it.
 If at some point you no longer want to maintain some code, then please help in
 finding a new maintainer and also don't forget to update the @file{MAINTAINERS} file.
@end enumerate
 We think our rules are not too hard. If you have comments, contact us.
-@chapter Code of conduct
+@section Code of conduct
 Be friendly and respectful towards others and third parties.
 Treat others the way you yourself want to be treated.
@@ -455,7 +433,7 @@ Finally, keep in mind the immortal words of Bill and Ted,
 "Be excellent to each other."
@anchor{Submitting patches}
-@chapter Submitting patches
+@section Submitting patches
 First, read the @ref{Coding Rules} above if you did not yet, in particular
 the rules regarding patch submission.
@@ -488,28 +466,8 @@ Patches should be posted to the
 mailing list. Use @code{git send-email} when possible since it will properly
 send patches without requiring extra care. If you cannot, then send patches
 as base64-encoded attachments, so your patch is not trashed during
-transmission. Also ensure the correct mime type is used
+transmission.
 (text/x-diff or text/x-patch or at least text/plain) and that only one
 patch is inline or attached per mail.
 You can check @url{https://patchwork.ffmpeg.org}, if your patch does not show up, its mime type
 likely was wrong.
@subheading Sending patches from email clients
 Using @code{git send-email} might not be desirable for everyone. The
 following trick allows to send patches via email clients in a safe
 way. It has been tested with Outlook and Thunderbird (with X-Unsent
 extension) and might work with other applications.
 Create your patch like this:
@verbatim
 git format-patch -s -o "outputfolder" --add-header "X-Unsent: 1" --suffix .eml --to ffmpeg-devel@ffmpeg.org -1 1a2b3c4d
@end verbatim
 Now you'll just need to open the eml file with the email application
 and execute 'Send'.
@subheading Reviews
 Your patch will be reviewed on the mailing list. You will likely be asked
 to make some changes and are expected to send in an improved version that
 incorporates the requests from the review. This process may go through
@@ -520,7 +478,7 @@ Give us a few days to react. But if some time passes without reaction,
 send a reminder by email. Your patch should eventually be dealt with.
-@chapter New codecs or formats checklist
+@section New codecs or formats checklist
@enumerate
@item
@@ -572,7 +530,7 @@ Did you make sure it compiles standalone, i.e. with
@end enumerate
-@chapter Patch submission checklist
+@section patch submission checklist
@enumerate
@item
@@ -582,9 +540,9 @@ Does @code{make fate} pass with the patch applied?
 Was the patch generated with git format-patch or send-email?
@item
-Did you sign-off your patch? (@code{git commit -s})
+Did you sign off your patch? (git commit -s)
-See @uref{https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/Documentation/process/submitting-patches.rst, Sign your work} for the meaning
+See @url{http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob_plain;f=Documentation/SubmittingPatches} for the meaning
-of @dfn{sign-off}.
+of sign off.
@item
 Did you provide a clear git commit log message?
@@ -641,7 +599,7 @@ If the patch fixes a bug, did you provide a verbose analysis of the bug?
 If the patch fixes a bug, did you provide enough information, including
 a sample, so the bug can be reproduced and the fix can be verified?
 Note please do not attach samples >100k to mails but rather provide a
-URL, you can upload to @url{https://streams.videolan.org/upload/}.
+URL, you can upload to ftp://upload.ffmpeg.org.
@item
 Did you provide a verbose summary about what the patch does change?
@@ -685,7 +643,7 @@ Test your code with valgrind and or Address Sanitizer to ensure it's free
 of leaks, out of array accesses, etc.
@end enumerate
-@chapter Patch review process
+@section Patch review process
 All patches posted to ffmpeg-devel will be reviewed, unless they contain a
 clear note that the patch is not for the git master branch.
@@ -716,7 +674,7 @@ to be reviewed, please consider helping to review other patches, that is a great
 way to get everyone's patches reviewed sooner.
@anchor{Regression tests}
-@chapter Regression tests
+@section Regression tests
 Before submitting a patch (or committing to the repository), you should at least
 test that you did not break anything.
@@ -727,7 +685,7 @@ Running 'make fate' accomplishes this, please see @url{fate.html} for details.
 this case, the reference results of the regression tests shall be modified
 accordingly].
-@section Adding files to the fate-suite dataset
+@subsection Adding files to the fate-suite dataset
 When there is no muxer or encoder available to generate test media for a
 specific test then the media has to be included in the fate-suite.
@@ -738,7 +696,7 @@ Once you have a working fate test and fate sample, provide in the commit
 message or introductory message for the patch series that you post to
 the ffmpeg-devel mailing list, a direct link to download the sample media.
-@section Visualizing Test Coverage
+@subsection Visualizing Test Coverage
 The FFmpeg build system allows visualizing the test coverage in an easy
 manner with the coverage tools @code{gcov}/@code{lcov}.  This involves
@@ -765,7 +723,7 @@ You can use the command @code{make lcov-reset} to reset the coverage
 measurements. You will need to rerun @code{make lcov} after running a
 new test.
-@section Using Valgrind
+@subsection Using Valgrind
 The configure script provides a shortcut for using valgrind to spot bugs
 related to memory handling. Just add the option
@@ -779,7 +737,7 @@ In case you need finer control over how valgrind is invoked, use the
 your configure line instead.
@anchor{Release process}
-@chapter Release process
+@section Release process
 FFmpeg maintains a set of @strong{release branches}, which are the
 recommended deliverable for system integrators and distributors (such as
@@ -811,7 +769,7 @@ adjustments to the symbol versioning file. Please discuss such changes
 on the @strong{ffmpeg-devel} mailing list in time to allow forward planning.
@anchor{Criteria for Point Releases}
-@section Criteria for Point Releases
+@subsection Criteria for Point Releases
 Changes that match the following criteria are valid candidates for
 inclusion into a point release:
@@ -835,7 +793,7 @@ point releases of the same release branch.
 The order for checking the rules is (1 OR 2 OR 3) AND 4.
-@section Release Checklist
+@subsection Release Checklist
 The release process involves the following steps:
--- a/doc/doxy-wrapper.sh
+++ b/doc/doxy-wrapper.sh
@@ -1,13 +1,10 @@
 #!/bin/sh
 OUT_DIR="${1}"
-SRC_DIR="${2}"
+DOXYFILE="${2}"
-DOXYFILE="${3}"
+DOXYGEN="${3}"
 DOXYGEN="${4}"
-shift 4
+shift 3
 cd ${SRC_DIR}
 if [ -e "VERSION" ]; then
    VERSION=`cat "VERSION"`
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
--- a/doc/examples/.gitignore
+++ b/doc/examples/.gitignore
@@ -1,24 +1,16 @@
-/avio_list_dir
+/avio_dir_cmd
 /avio_reading
-/decode_audio
+/decoding_encoding
 /decode_video
 /demuxing_decoding
 /encode_audio
 /encode_video
 /extract_mvs
 /filter_audio
 /filtering_audio
 /filtering_video
 /http_multiclient
 /hw_decode
 /metadata
 /muxing
 /pc-uninstalled
 /qsvdec
 /remuxing
 /resampling_audio
 /scaling_video
 /transcode_aac
 /transcoding
 /vaapi_encode
 /vaapi_transcode
--- a/doc/examples/Makefile
+++ b/doc/examples/Makefile
@@ -1,64 +1,46 @@
-EXAMPLES-$(CONFIG_AVIO_LIST_DIR_EXAMPLE)     += avio_list_dir
+# use pkg-config for getting CFLAGS and LDLIBS
-EXAMPLES-$(CONFIG_AVIO_READING_EXAMPLE)      += avio_reading
+FFMPEG_LIBS=    libavdevice                        \
-EXAMPLES-$(CONFIG_DECODE_AUDIO_EXAMPLE)      += decode_audio
+                libavformat                        \
-EXAMPLES-$(CONFIG_DECODE_VIDEO_EXAMPLE)      += decode_video
+                libavfilter                        \
-EXAMPLES-$(CONFIG_DEMUXING_DECODING_EXAMPLE) += demuxing_decoding
+                libavcodec                         \
-EXAMPLES-$(CONFIG_ENCODE_AUDIO_EXAMPLE)      += encode_audio
+                libswresample                      \
-EXAMPLES-$(CONFIG_ENCODE_VIDEO_EXAMPLE)      += encode_video
+                libswscale                         \
-EXAMPLES-$(CONFIG_EXTRACT_MVS_EXAMPLE)       += extract_mvs
+                libavutil                          \
 EXAMPLES-$(CONFIG_FILTER_AUDIO_EXAMPLE)      += filter_audio
 EXAMPLES-$(CONFIG_FILTERING_AUDIO_EXAMPLE)   += filtering_audio
 EXAMPLES-$(CONFIG_FILTERING_VIDEO_EXAMPLE)   += filtering_video
 EXAMPLES-$(CONFIG_HTTP_MULTICLIENT_EXAMPLE)  += http_multiclient
 EXAMPLES-$(CONFIG_HW_DECODE_EXAMPLE)         += hw_decode
 EXAMPLES-$(CONFIG_METADATA_EXAMPLE)          += metadata
 EXAMPLES-$(CONFIG_MUXING_EXAMPLE)            += muxing
 EXAMPLES-$(CONFIG_QSVDEC_EXAMPLE)            += qsvdec
 EXAMPLES-$(CONFIG_REMUXING_EXAMPLE)          += remuxing
 EXAMPLES-$(CONFIG_RESAMPLING_AUDIO_EXAMPLE)  += resampling_audio
 EXAMPLES-$(CONFIG_SCALING_VIDEO_EXAMPLE)     += scaling_video
 EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE)     += transcode_aac
 EXAMPLES-$(CONFIG_TRANSCODING_EXAMPLE)       += transcoding
 EXAMPLES-$(CONFIG_VAAPI_ENCODE_EXAMPLE)      += vaapi_encode
 EXAMPLES-$(CONFIG_VAAPI_TRANSCODE_EXAMPLE)   += vaapi_transcode
-EXAMPLES       := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF))
+CFLAGS += -Wall -g
-EXAMPLES_G     := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)_g$(EXESUF))
+CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
-ALL_EXAMPLES   := $(EXAMPLES) $(EXAMPLES-:%=doc/examples/%$(PROGSSUF)$(EXESUF))
+LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
 ALL_EXAMPLES_G := $(EXAMPLES_G) $(EXAMPLES-:%=doc/examples/%$(PROGSSUF)_g$(EXESUF))
 PROGS          += $(EXAMPLES)
-EXAMPLE_MAKEFILE := $(SRC_PATH)/doc/examples/Makefile
+EXAMPLES=       avio_dir_cmd                       \
-EXAMPLES_FILES := $(wildcard $(SRC_PATH)/doc/examples/*.c) $(SRC_PATH)/doc/examples/README $(EXAMPLE_MAKEFILE)
+                avio_reading                       \
                decoding_encoding                  \
                demuxing_decoding                  \
                extract_mvs                        \
                filtering_video                    \
                filtering_audio                    \
                http_multiclient                   \
                metadata                           \
                muxing                             \
                remuxing                           \
                resampling_audio                   \
                scaling_video                      \
                transcode_aac                      \
                transcoding                        \
-$(foreach P,$(EXAMPLES),$(eval OBJS-$(P:%$(PROGSSUF)$(EXESUF)=%) = $(P:%$(PROGSSUF)$(EXESUF)=%).o))
+OBJS=$(addsuffix .o,$(EXAMPLES))
 $(EXAMPLES_G): %$(PROGSSUF)_g$(EXESUF): %.o
-examples: $(EXAMPLES)
+# the following examples make explicit use of the math library
 avcodec:           LDLIBS += -lm
 decoding_encoding: LDLIBS += -lm
 muxing:            LDLIBS += -lm
 resampling_audio:  LDLIBS += -lm
-$(EXAMPLES:%$(PROGSSUF)$(EXESUF)=%.o): | doc/examples
+.phony: all clean-test clean
 OUTDIRS += doc/examples
-DOXY_INPUT += $(EXAMPLES:%$(PROGSSUF)$(EXESUF)=%.c)
+all: $(OBJS) $(EXAMPLES)
-install: install-examples
+clean-test:
 	$(RM) test*.pgm test.h264 test.mp2 test.sw test.mpg
-install-examples: $(EXAMPLES_FILES)
+clean: clean-test
-	$(Q)mkdir -p "$(DATADIR)/examples"
+	$(RM) $(EXAMPLES) $(OBJS)
 	$(INSTALL) -m 644 $(EXAMPLES_FILES) "$(DATADIR)/examples"
 	$(INSTALL) -m 644 $(EXAMPLE_MAKEFILE:%=%.example) "$(DATADIR)/examples/Makefile"
 uninstall: uninstall-examples
 uninstall-examples:
 	$(RM) -r "$(DATADIR)/examples"
 examplesclean:
 	$(RM) $(ALL_EXAMPLES) $(ALL_EXAMPLES_G)
 	$(RM) $(CLEANSUFFIXES:%=doc/examples/%)
 docclean:: examplesclean
 -include $(wildcard $(EXAMPLES:%$(PROGSSUF)$(EXESUF)=%.d))
 .PHONY: examples
--- a/doc/examples/Makefile.example
+++ b/doc/examples/Makefile.example
@@ -1,50 +0,0 @@
 # use pkg-config for getting CFLAGS and LDLIBS
 FFMPEG_LIBS=    libavdevice                        \
                libavformat                        \
                libavfilter                        \
                libavcodec                         \
                libswresample                      \
                libswscale                         \
                libavutil                          \
 CFLAGS += -Wall -g
 CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
 LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
 EXAMPLES=       avio_list_dir                      \
                avio_reading                       \
                decode_audio                       \
                decode_video                       \
                demuxing_decoding                  \
                encode_audio                       \
                encode_video                       \
                extract_mvs                        \
                filtering_video                    \
                filtering_audio                    \
                http_multiclient                   \
                hw_decode                          \
                metadata                           \
                muxing                             \
                remuxing                           \
                resampling_audio                   \
                scaling_video                      \
                transcode_aac                      \
                transcoding                        \
 OBJS=$(addsuffix .o,$(EXAMPLES))
 # the following examples make explicit use of the math library
 avcodec:           LDLIBS += -lm
 encode_audio:      LDLIBS += -lm
 muxing:            LDLIBS += -lm
 resampling_audio:  LDLIBS += -lm
 .phony: all clean-test clean
 all: $(OBJS) $(EXAMPLES)
 clean-test:
 	$(RM) test*.pgm test.h264 test.mp2 test.sw test.mpg
 clean: clean-test
 	$(RM) $(EXAMPLES) $(OBJS)
--- a/doc/examples/avio_list_dir.c
+++ b/doc/examples/avio_list_dir.c
@@ -102,15 +102,38 @@ static int list_op(const char *input_dir)
    return ret;
 }
 static int del_op(const char *url)
 {
    int ret = avpriv_io_delete(url);
    if (ret < 0)
        av_log(NULL, AV_LOG_ERROR, "Cannot delete '%s': %s.\n", url, av_err2str(ret));
    return ret;
 }
 static int move_op(const char *src, const char *dst)
 {
    int ret = avpriv_io_move(src, dst);
    if (ret < 0)
        av_log(NULL, AV_LOG_ERROR, "Cannot move '%s' into '%s': %s.\n", src, dst, av_err2str(ret));
    return ret;
 }
 static void usage(const char *program_name)
 {
-    fprintf(stderr, "usage: %s input_dir\n"
+    fprintf(stderr, "usage: %s OPERATION entry1 [entry2]\n"
-            "API example program to show how to list files in directory "
+            "API example program to show how to manipulate resources "
-            "accessed through AVIOContext.\n", program_name);
+            "accessed through AVIOContext.\n"
            "OPERATIONS:\n"
            "list      list content of the directory\n"
            "move      rename content in directory\n"
            "del       delete content in directory\n",
            program_name);
 }
 int main(int argc, char *argv[])
 {
    const char *op = NULL;
    int ret;
    av_log_set_level(AV_LOG_DEBUG);
@@ -120,9 +143,36 @@ int main(int argc, char *argv[])
        return 1;
    }
    /* register codecs and formats and other lavf/lavc components*/
    av_register_all();
    avformat_network_init();
-    ret = list_op(argv[1]);
+    op = argv[1];
    if (strcmp(op, "list") == 0) {
        if (argc < 3) {
            av_log(NULL, AV_LOG_INFO, "Missing argument for list operation.\n");
            ret = AVERROR(EINVAL);
        } else {
            ret = list_op(argv[2]);
        }
    } else if (strcmp(op, "del") == 0) {
        if (argc < 3) {
            av_log(NULL, AV_LOG_INFO, "Missing argument for del operation.\n");
            ret = AVERROR(EINVAL);
        } else {
            ret = del_op(argv[2]);
        }
    } else if (strcmp(op, "move") == 0) {
        if (argc < 4) {
            av_log(NULL, AV_LOG_INFO, "Missing argument for move operation.\n");
            ret = AVERROR(EINVAL);
        } else {
            ret = move_op(argv[2], argv[3]);
        }
    } else {
        av_log(NULL, AV_LOG_INFO, "Invalid operation %s\n", op);
        ret = AVERROR(EINVAL);
    }
    avformat_network_deinit();
--- a/doc/examples/avio_reading.c
+++ b/doc/examples/avio_reading.c
@@ -44,8 +44,6 @@ static int read_packet(void *opaque, uint8_t *buf, int buf_size)
    struct buffer_data *bd = (struct buffer_data *)opaque;
    buf_size = FFMIN(buf_size, bd->size);
    if (!buf_size)
        return AVERROR_EOF;
    printf("ptr:%p size:%zu\n", bd->ptr, bd->size);
    /* copy internal buffer data to buf */
@@ -74,6 +72,9 @@ int main(int argc, char *argv[])
    }
    input_filename = argv[1];
    /* register codecs and formats and other lavf/lavc components*/
    av_register_all();
    /* slurp file content into buffer */
    ret = av_file_map(input_filename, &buffer, &buffer_size, 0, NULL);
    if (ret < 0)
@@ -117,12 +118,11 @@ int main(int argc, char *argv[])
 end:
    avformat_close_input(&fmt_ctx);
    /* note: the internal buffer could have changed, and be != avio_ctx_buffer */
-    if (avio_ctx)
+    if (avio_ctx) {
        av_freep(&avio_ctx->buffer);
-    avio_context_free(&avio_ctx);
+        av_freep(&avio_ctx);
-
+    }
    av_file_unmap(buffer, buffer_size);
    if (ret < 0) {
--- a/doc/examples/decode_audio.c
+++ b/doc/examples/decode_audio.c
@@ -1,236 +0,0 @@
 /*
 * Copyright (c) 2001 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * audio decoding with libavcodec API example
 *
 * @example decode_audio.c
 */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <libavutil/frame.h>
 #include <libavutil/mem.h>
 #include <libavcodec/avcodec.h>
 #define AUDIO_INBUF_SIZE 20480
 #define AUDIO_REFILL_THRESH 4096
 static int get_format_from_sample_fmt(const char **fmt,
                                      enum AVSampleFormat sample_fmt)
 {
    int i;
    struct sample_fmt_entry {
        enum AVSampleFormat sample_fmt; const char *fmt_be, *fmt_le;
    } sample_fmt_entries[] = {
        { AV_SAMPLE_FMT_U8,  "u8",    "u8"    },
        { AV_SAMPLE_FMT_S16, "s16be", "s16le" },
        { AV_SAMPLE_FMT_S32, "s32be", "s32le" },
        { AV_SAMPLE_FMT_FLT, "f32be", "f32le" },
        { AV_SAMPLE_FMT_DBL, "f64be", "f64le" },
    };
    *fmt = NULL;
    for (i = 0; i < FF_ARRAY_ELEMS(sample_fmt_entries); i++) {
        struct sample_fmt_entry *entry = &sample_fmt_entries[i];
        if (sample_fmt == entry->sample_fmt) {
            *fmt = AV_NE(entry->fmt_be, entry->fmt_le);
            return 0;
        }
    }
    fprintf(stderr,
            "sample format %s is not supported as output format\n",
            av_get_sample_fmt_name(sample_fmt));
    return -1;
 }
 static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame,
                   FILE *outfile)
 {
    int i, ch;
    int ret, data_size;
    /* send the packet with the compressed data to the decoder */
    ret = avcodec_send_packet(dec_ctx, pkt);
    if (ret < 0) {
        fprintf(stderr, "Error submitting the packet to the decoder\n");
        exit(1);
    }
    /* read all the output frames (in general there may be any number of them */
    while (ret >= 0) {
        ret = avcodec_receive_frame(dec_ctx, frame);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
            return;
        else if (ret < 0) {
            fprintf(stderr, "Error during decoding\n");
            exit(1);
        }
        data_size = av_get_bytes_per_sample(dec_ctx->sample_fmt);
        if (data_size < 0) {
            /* This should not occur, checking just for paranoia */
            fprintf(stderr, "Failed to calculate data size\n");
            exit(1);
        }
        for (i = 0; i < frame->nb_samples; i++)
            for (ch = 0; ch < dec_ctx->channels; ch++)
                fwrite(frame->data[ch] + data_size*i, 1, data_size, outfile);
    }
 }
 int main(int argc, char **argv)
 {
    const char *outfilename, *filename;
    const AVCodec *codec;
    AVCodecContext *c= NULL;
    AVCodecParserContext *parser = NULL;
    int len, ret;
    FILE *f, *outfile;
    uint8_t inbuf[AUDIO_INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
    uint8_t *data;
    size_t   data_size;
    AVPacket *pkt;
    AVFrame *decoded_frame = NULL;
    enum AVSampleFormat sfmt;
    int n_channels = 0;
    const char *fmt;
    if (argc <= 2) {
        fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
        exit(0);
    }
    filename    = argv[1];
    outfilename = argv[2];
    pkt = av_packet_alloc();
    /* find the MPEG audio decoder */
    codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
    if (!codec) {
        fprintf(stderr, "Codec not found\n");
        exit(1);
    }
    parser = av_parser_init(codec->id);
    if (!parser) {
        fprintf(stderr, "Parser not found\n");
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate audio codec context\n");
        exit(1);
    }
    /* open it */
    if (avcodec_open2(c, codec, NULL) < 0) {
        fprintf(stderr, "Could not open codec\n");
        exit(1);
    }
    f = fopen(filename, "rb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    outfile = fopen(outfilename, "wb");
    if (!outfile) {
        av_free(c);
        exit(1);
    }
    /* decode until eof */
    data      = inbuf;
    data_size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);
    while (data_size > 0) {
        if (!decoded_frame) {
            if (!(decoded_frame = av_frame_alloc())) {
                fprintf(stderr, "Could not allocate audio frame\n");
                exit(1);
            }
        }
        ret = av_parser_parse2(parser, c, &pkt->data, &pkt->size,
                               data, data_size,
                               AV_NOPTS_VALUE, AV_NOPTS_VALUE, 0);
        if (ret < 0) {
            fprintf(stderr, "Error while parsing\n");
            exit(1);
        }
        data      += ret;
        data_size -= ret;
        if (pkt->size)
            decode(c, pkt, decoded_frame, outfile);
        if (data_size < AUDIO_REFILL_THRESH) {
            memmove(inbuf, data, data_size);
            data = inbuf;
            len = fread(data + data_size, 1,
                        AUDIO_INBUF_SIZE - data_size, f);
            if (len > 0)
                data_size += len;
        }
    }
    /* flush the decoder */
    pkt->data = NULL;
    pkt->size = 0;
    decode(c, pkt, decoded_frame, outfile);
    /* print output pcm infomations, because there have no metadata of pcm */
    sfmt = c->sample_fmt;
    if (av_sample_fmt_is_planar(sfmt)) {
        const char *packed = av_get_sample_fmt_name(sfmt);
        printf("Warning: the sample format the decoder produced is planar "
               "(%s). This example will output the first channel only.\n",
               packed ? packed : "?");
        sfmt = av_get_packed_sample_fmt(sfmt);
    }
    n_channels = c->channels;
    if ((ret = get_format_from_sample_fmt(&fmt, sfmt)) < 0)
        goto end;
    printf("Play the output audio file with the command:\n"
           "ffplay -f %s -ac %d -ar %d %s\n",
           fmt, n_channels, c->sample_rate,
           outfilename);
 end:
    fclose(outfile);
    fclose(f);
    avcodec_free_context(&c);
    av_parser_close(parser);
    av_frame_free(&decoded_frame);
    av_packet_free(&pkt);
    return 0;
 }
--- a/doc/examples/decode_video.c
+++ b/doc/examples/decode_video.c
@@ -1,187 +0,0 @@
 /*
 * Copyright (c) 2001 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * video decoding with libavcodec API example
 *
 * @example decode_video.c
 */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <libavcodec/avcodec.h>
 #define INBUF_SIZE 4096
 static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,
                     char *filename)
 {
    FILE *f;
    int i;
    f = fopen(filename,"wb");
    fprintf(f, "P5\n%d %d\n%d\n", xsize, ysize, 255);
    for (i = 0; i < ysize; i++)
        fwrite(buf + i * wrap, 1, xsize, f);
    fclose(f);
 }
 static void decode(AVCodecContext *dec_ctx, AVFrame *frame, AVPacket *pkt,
                   const char *filename)
 {
    char buf[1024];
    int ret;
    ret = avcodec_send_packet(dec_ctx, pkt);
    if (ret < 0) {
        fprintf(stderr, "Error sending a packet for decoding\n");
        exit(1);
    }
    while (ret >= 0) {
        ret = avcodec_receive_frame(dec_ctx, frame);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
            return;
        else if (ret < 0) {
            fprintf(stderr, "Error during decoding\n");
            exit(1);
        }
        printf("saving frame %3d\n", dec_ctx->frame_number);
        fflush(stdout);
        /* the picture is allocated by the decoder. no need to
           free it */
        snprintf(buf, sizeof(buf), "%s-%d", filename, dec_ctx->frame_number);
        pgm_save(frame->data[0], frame->linesize[0],
                 frame->width, frame->height, buf);
    }
 }
 int main(int argc, char **argv)
 {
    const char *filename, *outfilename;
    const AVCodec *codec;
    AVCodecParserContext *parser;
    AVCodecContext *c= NULL;
    FILE *f;
    AVFrame *frame;
    uint8_t inbuf[INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
    uint8_t *data;
    size_t   data_size;
    int ret;
    AVPacket *pkt;
    if (argc <= 2) {
        fprintf(stderr, "Usage: %s <input file> <output file>\n"
                "And check your input file is encoded by mpeg1video please.\n", argv[0]);
        exit(0);
    }
    filename    = argv[1];
    outfilename = argv[2];
    pkt = av_packet_alloc();
    if (!pkt)
        exit(1);
    /* set end of buffer to 0 (this ensures that no overreading happens for damaged MPEG streams) */
    memset(inbuf + INBUF_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);
    /* find the MPEG-1 video decoder */
    codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO);
    if (!codec) {
        fprintf(stderr, "Codec not found\n");
        exit(1);
    }
    parser = av_parser_init(codec->id);
    if (!parser) {
        fprintf(stderr, "parser not found\n");
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate video codec context\n");
        exit(1);
    }
    /* For some codecs, such as msmpeg4 and mpeg4, width and height
       MUST be initialized there because this information is not
       available in the bitstream. */
    /* open it */
    if (avcodec_open2(c, codec, NULL) < 0) {
        fprintf(stderr, "Could not open codec\n");
        exit(1);
    }
    f = fopen(filename, "rb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    frame = av_frame_alloc();
    if (!frame) {
        fprintf(stderr, "Could not allocate video frame\n");
        exit(1);
    }
    while (!feof(f)) {
        /* read raw data from the input file */
        data_size = fread(inbuf, 1, INBUF_SIZE, f);
        if (!data_size)
            break;
        /* use the parser to split the data into frames */
        data = inbuf;
        while (data_size > 0) {
            ret = av_parser_parse2(parser, c, &pkt->data, &pkt->size,
                                   data, data_size, AV_NOPTS_VALUE, AV_NOPTS_VALUE, 0);
            if (ret < 0) {
                fprintf(stderr, "Error while parsing\n");
                exit(1);
            }
            data      += ret;
            data_size -= ret;
            if (pkt->size)
                decode(c, frame, pkt, outfilename);
        }
    }
    /* flush the decoder */
    decode(c, frame, NULL, outfilename);
    fclose(f);
    av_parser_close(parser);
    avcodec_free_context(&c);
    av_frame_free(&frame);
    av_packet_free(&pkt);
    return 0;
 }
--- a/doc/examples/decoding_encoding.c
+++ b/doc/examples/decoding_encoding.c
@@ -0,0 +1,665 @@
 /*
 * Copyright (c) 2001 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * libavcodec API use example.
 *
 * @example decoding_encoding.c
 * Note that libavcodec only handles codecs (MPEG, MPEG-4, etc...),
 * not file formats (AVI, VOB, MP4, MOV, MKV, MXF, FLV, MPEG-TS, MPEG-PS, etc...).
 * See library 'libavformat' for the format handling
 */
 #include <math.h>
 #include <libavutil/opt.h>
 #include <libavcodec/avcodec.h>
 #include <libavutil/channel_layout.h>
 #include <libavutil/common.h>
 #include <libavutil/imgutils.h>
 #include <libavutil/mathematics.h>
 #include <libavutil/samplefmt.h>
 #define INBUF_SIZE 4096
 #define AUDIO_INBUF_SIZE 20480
 #define AUDIO_REFILL_THRESH 4096
 /* check that a given sample format is supported by the encoder */
 static int check_sample_fmt(AVCodec *codec, enum AVSampleFormat sample_fmt)
 {
    const enum AVSampleFormat *p = codec->sample_fmts;
    while (*p != AV_SAMPLE_FMT_NONE) {
        if (*p == sample_fmt)
            return 1;
        p++;
    }
    return 0;
 }
 /* just pick the highest supported samplerate */
 static int select_sample_rate(AVCodec *codec)
 {
    const int *p;
    int best_samplerate = 0;
    if (!codec->supported_samplerates)
        return 44100;
    p = codec->supported_samplerates;
    while (*p) {
        best_samplerate = FFMAX(*p, best_samplerate);
        p++;
    }
    return best_samplerate;
 }
 /* select layout with the highest channel count */
 static int select_channel_layout(AVCodec *codec)
 {
    const uint64_t *p;
    uint64_t best_ch_layout = 0;
    int best_nb_channels   = 0;
    if (!codec->channel_layouts)
        return AV_CH_LAYOUT_STEREO;
    p = codec->channel_layouts;
    while (*p) {
        int nb_channels = av_get_channel_layout_nb_channels(*p);
        if (nb_channels > best_nb_channels) {
            best_ch_layout    = *p;
            best_nb_channels = nb_channels;
        }
        p++;
    }
    return best_ch_layout;
 }
 /*
 * Audio encoding example
 */
 static void audio_encode_example(const char *filename)
 {
    AVCodec *codec;
    AVCodecContext *c= NULL;
    AVFrame *frame;
    AVPacket pkt;
    int i, j, k, ret, got_output;
    int buffer_size;
    FILE *f;
    uint16_t *samples;
    float t, tincr;
    printf("Encode audio file %s\n", filename);
    /* find the MP2 encoder */
    codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
    if (!codec) {
        fprintf(stderr, "Codec not found\n");
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate audio codec context\n");
        exit(1);
    }
    /* put sample parameters */
    c->bit_rate = 64000;
    /* check that the encoder supports s16 pcm input */
    c->sample_fmt = AV_SAMPLE_FMT_S16;
    if (!check_sample_fmt(codec, c->sample_fmt)) {
        fprintf(stderr, "Encoder does not support sample format %s",
                av_get_sample_fmt_name(c->sample_fmt));
        exit(1);
    }
    /* select other audio parameters supported by the encoder */
    c->sample_rate    = select_sample_rate(codec);
    c->channel_layout = select_channel_layout(codec);
    c->channels       = av_get_channel_layout_nb_channels(c->channel_layout);
    /* open it */
    if (avcodec_open2(c, codec, NULL) < 0) {
        fprintf(stderr, "Could not open codec\n");
        exit(1);
    }
    f = fopen(filename, "wb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    /* frame containing input raw audio */
    frame = av_frame_alloc();
    if (!frame) {
        fprintf(stderr, "Could not allocate audio frame\n");
        exit(1);
    }
    frame->nb_samples     = c->frame_size;
    frame->format         = c->sample_fmt;
    frame->channel_layout = c->channel_layout;
    /* the codec gives us the frame size, in samples,
     * we calculate the size of the samples buffer in bytes */
    buffer_size = av_samples_get_buffer_size(NULL, c->channels, c->frame_size,
                                             c->sample_fmt, 0);
    if (buffer_size < 0) {
        fprintf(stderr, "Could not get sample buffer size\n");
        exit(1);
    }
    samples = av_malloc(buffer_size);
    if (!samples) {
        fprintf(stderr, "Could not allocate %d bytes for samples buffer\n",
                buffer_size);
        exit(1);
    }
    /* setup the data pointers in the AVFrame */
    ret = avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
                                   (const uint8_t*)samples, buffer_size, 0);
    if (ret < 0) {
        fprintf(stderr, "Could not setup audio frame\n");
        exit(1);
    }
    /* encode a single tone sound */
    t = 0;
    tincr = 2 * M_PI * 440.0 / c->sample_rate;
    for (i = 0; i < 200; i++) {
        av_init_packet(&pkt);
        pkt.data = NULL; // packet data will be allocated by the encoder
        pkt.size = 0;
        for (j = 0; j < c->frame_size; j++) {
            samples[2*j] = (int)(sin(t) * 10000);
            for (k = 1; k < c->channels; k++)
                samples[2*j + k] = samples[2*j];
            t += tincr;
        }
        /* encode the samples */
        ret = avcodec_encode_audio2(c, &pkt, frame, &got_output);
        if (ret < 0) {
            fprintf(stderr, "Error encoding audio frame\n");
            exit(1);
        }
        if (got_output) {
            fwrite(pkt.data, 1, pkt.size, f);
            av_packet_unref(&pkt);
        }
    }
    /* get the delayed frames */
    for (got_output = 1; got_output; i++) {
        ret = avcodec_encode_audio2(c, &pkt, NULL, &got_output);
        if (ret < 0) {
            fprintf(stderr, "Error encoding frame\n");
            exit(1);
        }
        if (got_output) {
            fwrite(pkt.data, 1, pkt.size, f);
            av_packet_unref(&pkt);
        }
    }
    fclose(f);
    av_freep(&samples);
    av_frame_free(&frame);
    avcodec_close(c);
    av_free(c);
 }
 /*
 * Audio decoding.
 */
 static void audio_decode_example(const char *outfilename, const char *filename)
 {
    AVCodec *codec;
    AVCodecContext *c= NULL;
    int len;
    FILE *f, *outfile;
    uint8_t inbuf[AUDIO_INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
    AVPacket avpkt;
    AVFrame *decoded_frame = NULL;
    av_init_packet(&avpkt);
    printf("Decode audio file %s to %s\n", filename, outfilename);
    /* find the MPEG audio decoder */
    codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
    if (!codec) {
        fprintf(stderr, "Codec not found\n");
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate audio codec context\n");
        exit(1);
    }
    /* open it */
    if (avcodec_open2(c, codec, NULL) < 0) {
        fprintf(stderr, "Could not open codec\n");
        exit(1);
    }
    f = fopen(filename, "rb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    outfile = fopen(outfilename, "wb");
    if (!outfile) {
        av_free(c);
        exit(1);
    }
    /* decode until eof */
    avpkt.data = inbuf;
    avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);
    while (avpkt.size > 0) {
        int i, ch;
        int got_frame = 0;
        if (!decoded_frame) {
            if (!(decoded_frame = av_frame_alloc())) {
                fprintf(stderr, "Could not allocate audio frame\n");
                exit(1);
            }
        }
        len = avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
        if (len < 0) {
            fprintf(stderr, "Error while decoding\n");
            exit(1);
        }
        if (got_frame) {
            /* if a frame has been decoded, output it */
            int data_size = av_get_bytes_per_sample(c->sample_fmt);
            if (data_size < 0) {
                /* This should not occur, checking just for paranoia */
                fprintf(stderr, "Failed to calculate data size\n");
                exit(1);
            }
            for (i=0; i<decoded_frame->nb_samples; i++)
                for (ch=0; ch<c->channels; ch++)
                    fwrite(decoded_frame->data[ch] + data_size*i, 1, data_size, outfile);
        }
        avpkt.size -= len;
        avpkt.data += len;
        avpkt.dts =
        avpkt.pts = AV_NOPTS_VALUE;
        if (avpkt.size < AUDIO_REFILL_THRESH) {
            /* Refill the input buffer, to avoid trying to decode
             * incomplete frames. Instead of this, one could also use
             * a parser, or use a proper container format through
             * libavformat. */
            memmove(inbuf, avpkt.data, avpkt.size);
            avpkt.data = inbuf;
            len = fread(avpkt.data + avpkt.size, 1,
                        AUDIO_INBUF_SIZE - avpkt.size, f);
            if (len > 0)
                avpkt.size += len;
        }
    }
    fclose(outfile);
    fclose(f);
    avcodec_close(c);
    av_free(c);
    av_frame_free(&decoded_frame);
 }
 /*
 * Video encoding example
 */
 static void video_encode_example(const char *filename, int codec_id)
 {
    AVCodec *codec;
    AVCodecContext *c= NULL;
    int i, ret, x, y, got_output;
    FILE *f;
    AVFrame *frame;
    AVPacket pkt;
    uint8_t endcode[] = { 0, 0, 1, 0xb7 };
    printf("Encode video file %s\n", filename);
    /* find the video encoder */
    codec = avcodec_find_encoder(codec_id);
    if (!codec) {
        fprintf(stderr, "Codec not found\n");
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate video codec context\n");
        exit(1);
    }
    /* put sample parameters */
    c->bit_rate = 400000;
    /* resolution must be a multiple of two */
    c->width = 352;
    c->height = 288;
    /* frames per second */
    c->time_base = (AVRational){1,25};
    /* emit one intra frame every ten frames
     * check frame pict_type before passing frame
     * to encoder, if frame->pict_type is AV_PICTURE_TYPE_I
     * then gop_size is ignored and the output of encoder
     * will always be I frame irrespective to gop_size
     */
    c->gop_size = 10;
    c->max_b_frames = 1;
    c->pix_fmt = AV_PIX_FMT_YUV420P;
    if (codec_id == AV_CODEC_ID_H264)
        av_opt_set(c->priv_data, "preset", "slow", 0);
    /* open it */
    if (avcodec_open2(c, codec, NULL) < 0) {
        fprintf(stderr, "Could not open codec\n");
        exit(1);
    }
    f = fopen(filename, "wb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    frame = av_frame_alloc();
    if (!frame) {
        fprintf(stderr, "Could not allocate video frame\n");
        exit(1);
    }
    frame->format = c->pix_fmt;
    frame->width  = c->width;
    frame->height = c->height;
    /* the image can be allocated by any means and av_image_alloc() is
     * just the most convenient way if av_malloc() is to be used */
    ret = av_image_alloc(frame->data, frame->linesize, c->width, c->height,
                         c->pix_fmt, 32);
    if (ret < 0) {
        fprintf(stderr, "Could not allocate raw picture buffer\n");
        exit(1);
    }
    /* encode 1 second of video */
    for (i = 0; i < 25; i++) {
        av_init_packet(&pkt);
        pkt.data = NULL;    // packet data will be allocated by the encoder
        pkt.size = 0;
        fflush(stdout);
        /* prepare a dummy image */
        /* Y */
        for (y = 0; y < c->height; y++) {
            for (x = 0; x < c->width; x++) {
                frame->data[0][y * frame->linesize[0] + x] = x + y + i * 3;
            }
        }
        /* Cb and Cr */
        for (y = 0; y < c->height/2; y++) {
            for (x = 0; x < c->width/2; x++) {
                frame->data[1][y * frame->linesize[1] + x] = 128 + y + i * 2;
                frame->data[2][y * frame->linesize[2] + x] = 64 + x + i * 5;
            }
        }
        frame->pts = i;
        /* encode the image */
        ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
        if (ret < 0) {
            fprintf(stderr, "Error encoding frame\n");
            exit(1);
        }
        if (got_output) {
            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
            fwrite(pkt.data, 1, pkt.size, f);
            av_packet_unref(&pkt);
        }
    }
    /* get the delayed frames */
    for (got_output = 1; got_output; i++) {
        fflush(stdout);
        ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
        if (ret < 0) {
            fprintf(stderr, "Error encoding frame\n");
            exit(1);
        }
        if (got_output) {
            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
            fwrite(pkt.data, 1, pkt.size, f);
            av_packet_unref(&pkt);
        }
    }
    /* add sequence end code to have a real MPEG file */
    fwrite(endcode, 1, sizeof(endcode), f);
    fclose(f);
    avcodec_close(c);
    av_free(c);
    av_freep(&frame->data[0]);
    av_frame_free(&frame);
    printf("\n");
 }
 /*
 * Video decoding example
 */
 static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,
                     char *filename)
 {
    FILE *f;
    int i;
    f = fopen(filename,"w");
    fprintf(f, "P5\n%d %d\n%d\n", xsize, ysize, 255);
    for (i = 0; i < ysize; i++)
        fwrite(buf + i * wrap, 1, xsize, f);
    fclose(f);
 }
 static int decode_write_frame(const char *outfilename, AVCodecContext *avctx,
                              AVFrame *frame, int *frame_count, AVPacket *pkt, int last)
 {
    int len, got_frame;
    char buf[1024];
    len = avcodec_decode_video2(avctx, frame, &got_frame, pkt);
    if (len < 0) {
        fprintf(stderr, "Error while decoding frame %d\n", *frame_count);
        return len;
    }
    if (got_frame) {
        printf("Saving %sframe %3d\n", last ? "last " : "", *frame_count);
        fflush(stdout);
        /* the picture is allocated by the decoder, no need to free it */
        snprintf(buf, sizeof(buf), outfilename, *frame_count);
        pgm_save(frame->data[0], frame->linesize[0],
                 frame->width, frame->height, buf);
        (*frame_count)++;
    }
    if (pkt->data) {
        pkt->size -= len;
        pkt->data += len;
    }
    return 0;
 }
 static void video_decode_example(const char *outfilename, const char *filename)
 {
    AVCodec *codec;
    AVCodecContext *c= NULL;
    int frame_count;
    FILE *f;
    AVFrame *frame;
    uint8_t inbuf[INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
    AVPacket avpkt;
    av_init_packet(&avpkt);
    /* set end of buffer to 0 (this ensures that no overreading happens for damaged MPEG streams) */
    memset(inbuf + INBUF_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);
    printf("Decode video file %s to %s\n", filename, outfilename);
    /* find the MPEG-1 video decoder */
    codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO);
    if (!codec) {
        fprintf(stderr, "Codec not found\n");
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate video codec context\n");
        exit(1);
    }
    if (codec->capabilities & AV_CODEC_CAP_TRUNCATED)
        c->flags |= AV_CODEC_FLAG_TRUNCATED; // we do not send complete frames
    /* For some codecs, such as msmpeg4 and mpeg4, width and height
       MUST be initialized there because this information is not
       available in the bitstream. */
    /* open it */
    if (avcodec_open2(c, codec, NULL) < 0) {
        fprintf(stderr, "Could not open codec\n");
        exit(1);
    }
    f = fopen(filename, "rb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    frame = av_frame_alloc();
    if (!frame) {
        fprintf(stderr, "Could not allocate video frame\n");
        exit(1);
    }
    frame_count = 0;
    for (;;) {
        avpkt.size = fread(inbuf, 1, INBUF_SIZE, f);
        if (avpkt.size == 0)
            break;
        /* NOTE1: some codecs are stream based (mpegvideo, mpegaudio)
           and this is the only method to use them because you cannot
           know the compressed data size before analysing it.
           BUT some other codecs (msmpeg4, mpeg4) are inherently frame
           based, so you must call them with all the data for one
           frame exactly. You must also initialize 'width' and
           'height' before initializing them. */
        /* NOTE2: some codecs allow the raw parameters (frame size,
           sample rate) to be changed at any frame. We handle this, so
           you should also take care of it */
        /* here, we use a stream based decoder (mpeg1video), so we
           feed decoder and see if it could decode a frame */
        avpkt.data = inbuf;
        while (avpkt.size > 0)
            if (decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 0) < 0)
                exit(1);
    }
    /* Some codecs, such as MPEG, transmit the I- and P-frame with a
       latency of one frame. You must do the following to have a
       chance to get the last frame of the video. */
    avpkt.data = NULL;
    avpkt.size = 0;
    decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 1);
    fclose(f);
    avcodec_close(c);
    av_free(c);
    av_frame_free(&frame);
    printf("\n");
 }
 int main(int argc, char **argv)
 {
    const char *output_type;
    /* register all the codecs */
    avcodec_register_all();
    if (argc < 2) {
        printf("usage: %s output_type\n"
               "API example program to decode/encode a media stream with libavcodec.\n"
               "This program generates a synthetic stream and encodes it to a file\n"
               "named test.h264, test.mp2 or test.mpg depending on output_type.\n"
               "The encoded stream is then decoded and written to a raw data output.\n"
               "output_type must be chosen between 'h264', 'mp2', 'mpg'.\n",
               argv[0]);
        return 1;
    }
    output_type = argv[1];
    if (!strcmp(output_type, "h264")) {
        video_encode_example("test.h264", AV_CODEC_ID_H264);
    } else if (!strcmp(output_type, "mp2")) {
        audio_encode_example("test.mp2");
        audio_decode_example("test.pcm", "test.mp2");
    } else if (!strcmp(output_type, "mpg")) {
        video_encode_example("test.mpg", AV_CODEC_ID_MPEG1VIDEO);
        video_decode_example("test%02d.pgm", "test.mpg");
    } else {
        fprintf(stderr, "Invalid output type '%s', choose between 'h264', 'mp2', or 'mpg'\n",
                output_type);
        return 1;
    }
    return 0;
 }
--- a/doc/examples/demuxing_decoding.c
+++ b/doc/examples/demuxing_decoding.c
@@ -32,7 +32,6 @@
 #include <libavutil/imgutils.h>
 #include <libavutil/samplefmt.h>
 #include <libavutil/timestamp.h>
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 static AVFormatContext *fmt_ctx = NULL;
@@ -52,105 +51,110 @@ static int video_dst_bufsize;
 static int video_stream_idx = -1, audio_stream_idx = -1;
 static AVFrame *frame = NULL;
-static AVPacket *pkt = NULL;
+static AVPacket pkt;
 static int video_frame_count = 0;
 static int audio_frame_count = 0;
-static int output_video_frame(AVFrame *frame)
+/* Enable or disable frame reference counting. You are not supposed to support
-{
+ * both paths in your application but pick the one most appropriate to your
-    if (frame->width != width || frame->height != height ||
+ * needs. Look for the use of refcount in this example to see what are the
-        frame->format != pix_fmt) {
+ * differences of API usage between them. */
-        /* To handle this change, one could call av_image_alloc again and
+static int refcount = 0;
         * decode the following frames into another rawvideo file. */
        fprintf(stderr, "Error: Width, height and pixel format have to be "
                "constant in a rawvideo file, but the width, height or "
                "pixel format of the input video changed:\n"
                "old: width = %d, height = %d, format = %s\n"
                "new: width = %d, height = %d, format = %s\n",
                width, height, av_get_pix_fmt_name(pix_fmt),
                frame->width, frame->height,
                av_get_pix_fmt_name(frame->format));
        return -1;
    }
-    printf("video_frame n:%d coded_n:%d\n",
+static int decode_packet(int *got_frame, int cached)
           video_frame_count++, frame->coded_picture_number);
    /* copy decoded frame to destination buffer:
     * this is required since rawvideo expects non aligned data */
    av_image_copy(video_dst_data, video_dst_linesize,
                  (const uint8_t **)(frame->data), frame->linesize,
                  pix_fmt, width, height);
    /* write to rawvideo file */
    fwrite(video_dst_data[0], 1, video_dst_bufsize, video_dst_file);
    return 0;
 }
 static int output_audio_frame(AVFrame *frame)
 {
    size_t unpadded_linesize = frame->nb_samples * av_get_bytes_per_sample(frame->format);
    printf("audio_frame n:%d nb_samples:%d pts:%s\n",
           audio_frame_count++, frame->nb_samples,
           av_ts2timestr(frame->pts, &audio_dec_ctx->time_base));
    /* Write the raw audio data samples of the first plane. This works
     * fine for packed formats (e.g. AV_SAMPLE_FMT_S16). However,
     * most audio decoders output planar audio, which uses a separate
     * plane of audio samples for each channel (e.g. AV_SAMPLE_FMT_S16P).
     * In other words, this code will write only the first audio channel
     * in these cases.
     * You should use libswresample or libavfilter to convert the frame
     * to packed data. */
    fwrite(frame->extended_data[0], 1, unpadded_linesize, audio_dst_file);
    return 0;
 }
 static int decode_packet(AVCodecContext *dec, const AVPacket *pkt)
 {
    int ret = 0;
    int decoded = pkt.size;
-    // submit the packet to the decoder
+    *got_frame = 0;
    ret = avcodec_send_packet(dec, pkt);
    if (ret < 0) {
        fprintf(stderr, "Error submitting a packet for decoding (%s)\n", av_err2str(ret));
        return ret;
    }
-    // get all the available frames from the decoder
+    if (pkt.stream_index == video_stream_idx) {
-    while (ret >= 0) {
+        /* decode video frame */
-        ret = avcodec_receive_frame(dec, frame);
+        ret = avcodec_decode_video2(video_dec_ctx, frame, got_frame, &pkt);
        if (ret < 0) {
-            // those two return values are special and mean there is no output
+            fprintf(stderr, "Error decoding video frame (%s)\n", av_err2str(ret));
            // frame available, but there were no errors during decoding
            if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
                return 0;
            fprintf(stderr, "Error during decoding (%s)\n", av_err2str(ret));
            return ret;
        }
-        // write the frame data to output file
+        if (*got_frame) {
        if (dec->codec->type == AVMEDIA_TYPE_VIDEO)
            ret = output_video_frame(frame);
        else
            ret = output_audio_frame(frame);
-        av_frame_unref(frame);
+            if (frame->width != width || frame->height != height ||
-        if (ret < 0)
+                frame->format != pix_fmt) {
                /* To handle this change, one could call av_image_alloc again and
                 * decode the following frames into another rawvideo file. */
                fprintf(stderr, "Error: Width, height and pixel format have to be "
                        "constant in a rawvideo file, but the width, height or "
                        "pixel format of the input video changed:\n"
                        "old: width = %d, height = %d, format = %s\n"
                        "new: width = %d, height = %d, format = %s\n",
                        width, height, av_get_pix_fmt_name(pix_fmt),
                        frame->width, frame->height,
                        av_get_pix_fmt_name(frame->format));
                return -1;
            }
            printf("video_frame%s n:%d coded_n:%d pts:%s\n",
                   cached ? "(cached)" : "",
                   video_frame_count++, frame->coded_picture_number,
                   av_ts2timestr(frame->pts, &video_dec_ctx->time_base));
            /* copy decoded frame to destination buffer:
             * this is required since rawvideo expects non aligned data */
            av_image_copy(video_dst_data, video_dst_linesize,
                          (const uint8_t **)(frame->data), frame->linesize,
                          pix_fmt, width, height);
            /* write to rawvideo file */
            fwrite(video_dst_data[0], 1, video_dst_bufsize, video_dst_file);
        }
    } else if (pkt.stream_index == audio_stream_idx) {
        /* decode audio frame */
        ret = avcodec_decode_audio4(audio_dec_ctx, frame, got_frame, &pkt);
        if (ret < 0) {
            fprintf(stderr, "Error decoding audio frame (%s)\n", av_err2str(ret));
            return ret;
        }
        /* Some audio decoders decode only part of the packet, and have to be
         * called again with the remainder of the packet data.
         * Sample: fate-suite/lossless-audio/luckynight-partial.shn
         * Also, some decoders might over-read the packet. */
        decoded = FFMIN(ret, pkt.size);
        if (*got_frame) {
            size_t unpadded_linesize = frame->nb_samples * av_get_bytes_per_sample(frame->format);
            printf("audio_frame%s n:%d nb_samples:%d pts:%s\n",
                   cached ? "(cached)" : "",
                   audio_frame_count++, frame->nb_samples,
                   av_ts2timestr(frame->pts, &audio_dec_ctx->time_base));
            /* Write the raw audio data samples of the first plane. This works
             * fine for packed formats (e.g. AV_SAMPLE_FMT_S16). However,
             * most audio decoders output planar audio, which uses a separate
             * plane of audio samples for each channel (e.g. AV_SAMPLE_FMT_S16P).
             * In other words, this code will write only the first audio channel
             * in these cases.
             * You should use libswresample or libavfilter to convert the frame
             * to packed data. */
            fwrite(frame->extended_data[0], 1, unpadded_linesize, audio_dst_file);
        }
    }
-    return 0;
+    /* If we use frame reference counting, we own the data and need
     * to de-reference it when we don't use it anymore */
    if (*got_frame && refcount)
        av_frame_unref(frame);
    return decoded;
 }
 static int open_codec_context(int *stream_idx,
-                              AVCodecContext **dec_ctx, AVFormatContext *fmt_ctx, enum AVMediaType type)
+                              AVFormatContext *fmt_ctx, enum AVMediaType type)
 {
    int ret, stream_index;
    AVStream *st;
-    const AVCodec *dec = NULL;
+    AVCodecContext *dec_ctx = NULL;
    AVCodec *dec = NULL;
    AVDictionary *opts = NULL;
    ret = av_find_best_stream(fmt_ctx, type, -1, -1, NULL, 0);
    if (ret < 0) {
@@ -162,30 +166,17 @@ static int open_codec_context(int *stream_idx,
        st = fmt_ctx->streams[stream_index];
        /* find decoder for the stream */
-        dec = avcodec_find_decoder(st->codecpar->codec_id);
+        dec_ctx = st->codec;
        dec = avcodec_find_decoder(dec_ctx->codec_id);
        if (!dec) {
            fprintf(stderr, "Failed to find %s codec\n",
                    av_get_media_type_string(type));
            return AVERROR(EINVAL);
        }
-        /* Allocate a codec context for the decoder */
+        /* Init the decoders, with or without reference counting */
-        *dec_ctx = avcodec_alloc_context3(dec);
+        av_dict_set(&opts, "refcounted_frames", refcount ? "1" : "0", 0);
-        if (!*dec_ctx) {
+        if ((ret = avcodec_open2(dec_ctx, dec, &opts)) < 0) {
            fprintf(stderr, "Failed to allocate the %s codec context\n",
                    av_get_media_type_string(type));
            return AVERROR(ENOMEM);
        }
        /* Copy codec parameters from input stream to output codec context */
        if ((ret = avcodec_parameters_to_context(*dec_ctx, st->codecpar)) < 0) {
            fprintf(stderr, "Failed to copy %s codec parameters to decoder context\n",
                    av_get_media_type_string(type));
            return ret;
        }
        /* Init the decoders */
        if ((ret = avcodec_open2(*dec_ctx, dec, NULL)) < 0) {
            fprintf(stderr, "Failed to open %s codec\n",
                    av_get_media_type_string(type));
            return ret;
@@ -227,21 +218,31 @@ static int get_format_from_sample_fmt(const char **fmt,
 int main (int argc, char **argv)
 {
-    int ret = 0;
+    int ret = 0, got_frame;
-    if (argc != 4) {
+    if (argc != 4 && argc != 5) {
-        fprintf(stderr, "usage: %s  input_file video_output_file audio_output_file\n"
+        fprintf(stderr, "usage: %s [-refcount] input_file video_output_file audio_output_file\n"
                "API example program to show how to read frames from an input file.\n"
                "This program reads frames from a file, decodes them, and writes decoded\n"
                "video frames to a rawvideo file named video_output_file, and decoded\n"
-                "audio frames to a rawaudio file named audio_output_file.\n",
+                "audio frames to a rawaudio file named audio_output_file.\n\n"
-                argv[0]);
+                "If the -refcount option is specified, the program use the\n"
                "reference counting frame system which allows keeping a copy of\n"
                "the data for longer than one decode call.\n"
                "\n", argv[0]);
        exit(1);
    }
    if (argc == 5 && !strcmp(argv[1], "-refcount")) {
        refcount = 1;
        argv++;
    }
    src_filename = argv[1];
    video_dst_filename = argv[2];
    audio_dst_filename = argv[3];
    /* register all formats and codecs */
    av_register_all();
    /* open input file, and allocate format context */
    if (avformat_open_input(&fmt_ctx, src_filename, NULL, NULL) < 0) {
        fprintf(stderr, "Could not open source file %s\n", src_filename);
@@ -254,8 +255,9 @@ int main (int argc, char **argv)
        exit(1);
    }
-    if (open_codec_context(&video_stream_idx, &video_dec_ctx, fmt_ctx, AVMEDIA_TYPE_VIDEO) >= 0) {
+    if (open_codec_context(&video_stream_idx, fmt_ctx, AVMEDIA_TYPE_VIDEO) >= 0) {
        video_stream = fmt_ctx->streams[video_stream_idx];
        video_dec_ctx = video_stream->codec;
        video_dst_file = fopen(video_dst_filename, "wb");
        if (!video_dst_file) {
@@ -277,8 +279,9 @@ int main (int argc, char **argv)
        video_dst_bufsize = ret;
    }
-    if (open_codec_context(&audio_stream_idx, &audio_dec_ctx, fmt_ctx, AVMEDIA_TYPE_AUDIO) >= 0) {
+    if (open_codec_context(&audio_stream_idx, fmt_ctx, AVMEDIA_TYPE_AUDIO) >= 0) {
        audio_stream = fmt_ctx->streams[audio_stream_idx];
        audio_dec_ctx = audio_stream->codec;
        audio_dst_file = fopen(audio_dst_filename, "wb");
        if (!audio_dst_file) {
            fprintf(stderr, "Could not open destination file %s\n", audio_dst_filename);
@@ -303,12 +306,10 @@ int main (int argc, char **argv)
        goto end;
    }
-    pkt = av_packet_alloc();
+    /* initialize packet, set data to NULL, let the demuxer fill it */
-    if (!pkt) {
+    av_init_packet(&pkt);
-        fprintf(stderr, "Could not allocate packet\n");
+    pkt.data = NULL;
-        ret = AVERROR(ENOMEM);
+    pkt.size = 0;
        goto end;
    }
    if (video_stream)
        printf("Demuxing video from file '%s' into '%s'\n", src_filename, video_dst_filename);
@@ -316,23 +317,24 @@ int main (int argc, char **argv)
        printf("Demuxing audio from file '%s' into '%s'\n", src_filename, audio_dst_filename);
    /* read frames from the file */
-    while (av_read_frame(fmt_ctx, pkt) >= 0) {
+    while (av_read_frame(fmt_ctx, &pkt) >= 0) {
-        // check if the packet belongs to a stream we are interested in, otherwise
+        AVPacket orig_pkt = pkt;
-        // skip it
+        do {
-        if (pkt->stream_index == video_stream_idx)
+            ret = decode_packet(&got_frame, 0);
-            ret = decode_packet(video_dec_ctx, pkt);
+            if (ret < 0)
-        else if (pkt->stream_index == audio_stream_idx)
+                break;
-            ret = decode_packet(audio_dec_ctx, pkt);
+            pkt.data += ret;
-        av_packet_unref(pkt);
+            pkt.size -= ret;
-        if (ret < 0)
+        } while (pkt.size > 0);
-            break;
+        av_packet_unref(&orig_pkt);
    }
-    /* flush the decoders */
+    /* flush cached frames */
-    if (video_dec_ctx)
+    pkt.data = NULL;
-        decode_packet(video_dec_ctx, NULL);
+    pkt.size = 0;
-    if (audio_dec_ctx)
+    do {
-        decode_packet(audio_dec_ctx, NULL);
+        decode_packet(&got_frame, 1);
    } while (got_frame);
    printf("Demuxing succeeded.\n");
@@ -367,14 +369,13 @@ int main (int argc, char **argv)
    }
 end:
-    avcodec_free_context(&video_dec_ctx);
+    avcodec_close(video_dec_ctx);
-    avcodec_free_context(&audio_dec_ctx);
+    avcodec_close(audio_dec_ctx);
    avformat_close_input(&fmt_ctx);
    if (video_dst_file)
        fclose(video_dst_file);
    if (audio_dst_file)
        fclose(audio_dst_file);
    av_packet_free(&pkt);
    av_frame_free(&frame);
    av_free(video_dst_data[0]);
--- a/doc/examples/encode_audio.c
+++ b/doc/examples/encode_audio.c
@@ -1,238 +0,0 @@
 /*
 * Copyright (c) 2001 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * audio encoding with libavcodec API example.
 *
 * @example encode_audio.c
 */
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <libavcodec/avcodec.h>
 #include <libavutil/channel_layout.h>
 #include <libavutil/common.h>
 #include <libavutil/frame.h>
 #include <libavutil/samplefmt.h>
 /* check that a given sample format is supported by the encoder */
 static int check_sample_fmt(const AVCodec *codec, enum AVSampleFormat sample_fmt)
 {
    const enum AVSampleFormat *p = codec->sample_fmts;
    while (*p != AV_SAMPLE_FMT_NONE) {
        if (*p == sample_fmt)
            return 1;
        p++;
    }
    return 0;
 }
 /* just pick the highest supported samplerate */
 static int select_sample_rate(const AVCodec *codec)
 {
    const int *p;
    int best_samplerate = 0;
    if (!codec->supported_samplerates)
        return 44100;
    p = codec->supported_samplerates;
    while (*p) {
        if (!best_samplerate || abs(44100 - *p) < abs(44100 - best_samplerate))
            best_samplerate = *p;
        p++;
    }
    return best_samplerate;
 }
 /* select layout with the highest channel count */
 static int select_channel_layout(const AVCodec *codec)
 {
    const uint64_t *p;
    uint64_t best_ch_layout = 0;
    int best_nb_channels   = 0;
    if (!codec->channel_layouts)
        return AV_CH_LAYOUT_STEREO;
    p = codec->channel_layouts;
    while (*p) {
        int nb_channels = av_get_channel_layout_nb_channels(*p);
        if (nb_channels > best_nb_channels) {
            best_ch_layout    = *p;
            best_nb_channels = nb_channels;
        }
        p++;
    }
    return best_ch_layout;
 }
 static void encode(AVCodecContext *ctx, AVFrame *frame, AVPacket *pkt,
                   FILE *output)
 {
    int ret;
    /* send the frame for encoding */
    ret = avcodec_send_frame(ctx, frame);
    if (ret < 0) {
        fprintf(stderr, "Error sending the frame to the encoder\n");
        exit(1);
    }
    /* read all the available output packets (in general there may be any
     * number of them */
    while (ret >= 0) {
        ret = avcodec_receive_packet(ctx, pkt);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
            return;
        else if (ret < 0) {
            fprintf(stderr, "Error encoding audio frame\n");
            exit(1);
        }
        fwrite(pkt->data, 1, pkt->size, output);
        av_packet_unref(pkt);
    }
 }
 int main(int argc, char **argv)
 {
    const char *filename;
    const AVCodec *codec;
    AVCodecContext *c= NULL;
    AVFrame *frame;
    AVPacket *pkt;
    int i, j, k, ret;
    FILE *f;
    uint16_t *samples;
    float t, tincr;
    if (argc <= 1) {
        fprintf(stderr, "Usage: %s <output file>\n", argv[0]);
        return 0;
    }
    filename = argv[1];
    /* find the MP2 encoder */
    codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
    if (!codec) {
        fprintf(stderr, "Codec not found\n");
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate audio codec context\n");
        exit(1);
    }
    /* put sample parameters */
    c->bit_rate = 64000;
    /* check that the encoder supports s16 pcm input */
    c->sample_fmt = AV_SAMPLE_FMT_S16;
    if (!check_sample_fmt(codec, c->sample_fmt)) {
        fprintf(stderr, "Encoder does not support sample format %s",
                av_get_sample_fmt_name(c->sample_fmt));
        exit(1);
    }
    /* select other audio parameters supported by the encoder */
    c->sample_rate    = select_sample_rate(codec);
    c->channel_layout = select_channel_layout(codec);
    c->channels       = av_get_channel_layout_nb_channels(c->channel_layout);
    /* open it */
    if (avcodec_open2(c, codec, NULL) < 0) {
        fprintf(stderr, "Could not open codec\n");
        exit(1);
    }
    f = fopen(filename, "wb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    /* packet for holding encoded output */
    pkt = av_packet_alloc();
    if (!pkt) {
        fprintf(stderr, "could not allocate the packet\n");
        exit(1);
    }
    /* frame containing input raw audio */
    frame = av_frame_alloc();
    if (!frame) {
        fprintf(stderr, "Could not allocate audio frame\n");
        exit(1);
    }
    frame->nb_samples     = c->frame_size;
    frame->format         = c->sample_fmt;
    frame->channel_layout = c->channel_layout;
    /* allocate the data buffers */
    ret = av_frame_get_buffer(frame, 0);
    if (ret < 0) {
        fprintf(stderr, "Could not allocate audio data buffers\n");
        exit(1);
    }
    /* encode a single tone sound */
    t = 0;
    tincr = 2 * M_PI * 440.0 / c->sample_rate;
    for (i = 0; i < 200; i++) {
        /* make sure the frame is writable -- makes a copy if the encoder
         * kept a reference internally */
        ret = av_frame_make_writable(frame);
        if (ret < 0)
            exit(1);
        samples = (uint16_t*)frame->data[0];
        for (j = 0; j < c->frame_size; j++) {
            samples[2*j] = (int)(sin(t) * 10000);
            for (k = 1; k < c->channels; k++)
                samples[2*j + k] = samples[2*j];
            t += tincr;
        }
        encode(c, frame, pkt, f);
    }
    /* flush the encoder */
    encode(c, NULL, pkt, f);
    fclose(f);
    av_frame_free(&frame);
    av_packet_free(&pkt);
    avcodec_free_context(&c);
    return 0;
 }
--- a/doc/examples/encode_video.c
+++ b/doc/examples/encode_video.c
@@ -1,216 +0,0 @@
 /*
 * Copyright (c) 2001 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * video encoding with libavcodec API example
 *
 * @example encode_video.c
 */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <libavcodec/avcodec.h>
 #include <libavutil/opt.h>
 #include <libavutil/imgutils.h>
 static void encode(AVCodecContext *enc_ctx, AVFrame *frame, AVPacket *pkt,
                   FILE *outfile)
 {
    int ret;
    /* send the frame to the encoder */
    if (frame)
        printf("Send frame %3"PRId64"\n", frame->pts);
    ret = avcodec_send_frame(enc_ctx, frame);
    if (ret < 0) {
        fprintf(stderr, "Error sending a frame for encoding\n");
        exit(1);
    }
    while (ret >= 0) {
        ret = avcodec_receive_packet(enc_ctx, pkt);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
            return;
        else if (ret < 0) {
            fprintf(stderr, "Error during encoding\n");
            exit(1);
        }
        printf("Write packet %3"PRId64" (size=%5d)\n", pkt->pts, pkt->size);
        fwrite(pkt->data, 1, pkt->size, outfile);
        av_packet_unref(pkt);
    }
 }
 int main(int argc, char **argv)
 {
    const char *filename, *codec_name;
    const AVCodec *codec;
    AVCodecContext *c= NULL;
    int i, ret, x, y;
    FILE *f;
    AVFrame *frame;
    AVPacket *pkt;
    uint8_t endcode[] = { 0, 0, 1, 0xb7 };
    if (argc <= 2) {
        fprintf(stderr, "Usage: %s <output file> <codec name>\n", argv[0]);
        exit(0);
    }
    filename = argv[1];
    codec_name = argv[2];
    /* find the mpeg1video encoder */
    codec = avcodec_find_encoder_by_name(codec_name);
    if (!codec) {
        fprintf(stderr, "Codec '%s' not found\n", codec_name);
        exit(1);
    }
    c = avcodec_alloc_context3(codec);
    if (!c) {
        fprintf(stderr, "Could not allocate video codec context\n");
        exit(1);
    }
    pkt = av_packet_alloc();
    if (!pkt)
        exit(1);
    /* put sample parameters */
    c->bit_rate = 400000;
    /* resolution must be a multiple of two */
    c->width = 352;
    c->height = 288;
    /* frames per second */
    c->time_base = (AVRational){1, 25};
    c->framerate = (AVRational){25, 1};
    /* emit one intra frame every ten frames
     * check frame pict_type before passing frame
     * to encoder, if frame->pict_type is AV_PICTURE_TYPE_I
     * then gop_size is ignored and the output of encoder
     * will always be I frame irrespective to gop_size
     */
    c->gop_size = 10;
    c->max_b_frames = 1;
    c->pix_fmt = AV_PIX_FMT_YUV420P;
    if (codec->id == AV_CODEC_ID_H264)
        av_opt_set(c->priv_data, "preset", "slow", 0);
    /* open it */
    ret = avcodec_open2(c, codec, NULL);
    if (ret < 0) {
        fprintf(stderr, "Could not open codec: %s\n", av_err2str(ret));
        exit(1);
    }
    f = fopen(filename, "wb");
    if (!f) {
        fprintf(stderr, "Could not open %s\n", filename);
        exit(1);
    }
    frame = av_frame_alloc();
    if (!frame) {
        fprintf(stderr, "Could not allocate video frame\n");
        exit(1);
    }
    frame->format = c->pix_fmt;
    frame->width  = c->width;
    frame->height = c->height;
    ret = av_frame_get_buffer(frame, 0);
    if (ret < 0) {
        fprintf(stderr, "Could not allocate the video frame data\n");
        exit(1);
    }
    /* encode 1 second of video */
    for (i = 0; i < 25; i++) {
        fflush(stdout);
        /* Make sure the frame data is writable.
           On the first round, the frame is fresh from av_frame_get_buffer()
           and therefore we know it is writable.
           But on the next rounds, encode() will have called
           avcodec_send_frame(), and the codec may have kept a reference to
           the frame in its internal structures, that makes the frame
           unwritable.
           av_frame_make_writable() checks that and allocates a new buffer
           for the frame only if necessary.
         */
        ret = av_frame_make_writable(frame);
        if (ret < 0)
            exit(1);
        /* Prepare a dummy image.
           In real code, this is where you would have your own logic for
           filling the frame. FFmpeg does not care what you put in the
           frame.
         */
        /* Y */
        for (y = 0; y < c->height; y++) {
            for (x = 0; x < c->width; x++) {
                frame->data[0][y * frame->linesize[0] + x] = x + y + i * 3;
            }
        }
        /* Cb and Cr */
        for (y = 0; y < c->height/2; y++) {
            for (x = 0; x < c->width/2; x++) {
                frame->data[1][y * frame->linesize[1] + x] = 128 + y + i * 2;
                frame->data[2][y * frame->linesize[2] + x] = 64 + x + i * 5;
            }
        }
        frame->pts = i;
        /* encode the image */
        encode(c, frame, pkt, f);
    }
    /* flush the encoder */
    encode(c, NULL, pkt, f);
    /* Add sequence end code to have a real MPEG file.
       It makes only sense because this tiny examples writes packets
       directly. This is called "elementary stream" and only works for some
       codecs. To create a valid file, you usually need to write packets
       into a proper file format or protocol; see muxing.c.
     */
    if (codec->id == AV_CODEC_ID_MPEG1VIDEO || codec->id == AV_CODEC_ID_MPEG2VIDEO)
        fwrite(endcode, 1, sizeof(endcode), f);
    fclose(f);
    avcodec_free_context(&c);
    av_frame_free(&frame);
    av_packet_free(&pkt);
    return 0;
 }
--- a/doc/examples/extract_mvs.c
+++ b/doc/examples/extract_mvs.c
@@ -22,7 +22,6 @@
 */
 #include <libavutil/motion_vector.h>
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 static AVFormatContext *fmt_ctx = NULL;
@@ -32,26 +31,23 @@ static const char *src_filename = NULL;
 static int video_stream_idx = -1;
 static AVFrame *frame = NULL;
 static AVPacket pkt;
 static int video_frame_count = 0;
-static int decode_packet(const AVPacket *pkt)
+static int decode_packet(int *got_frame, int cached)
 {
-    int ret = avcodec_send_packet(video_dec_ctx, pkt);
+    int decoded = pkt.size;
    if (ret < 0) {
        fprintf(stderr, "Error while sending a packet to the decoder: %s\n", av_err2str(ret));
        return ret;
    }
-    while (ret >= 0)  {
+    *got_frame = 0;
-        ret = avcodec_receive_frame(video_dec_ctx, frame);
+
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
+    if (pkt.stream_index == video_stream_idx) {
-            break;
+        int ret = avcodec_decode_video2(video_dec_ctx, frame, got_frame, &pkt);
-        } else if (ret < 0) {
+        if (ret < 0) {
-            fprintf(stderr, "Error while receiving a frame from the decoder: %s\n", av_err2str(ret));
+            fprintf(stderr, "Error decoding video frame (%s)\n", av_err2str(ret));
            return ret;
        }
-        if (ret >= 0) {
+        if (*got_frame) {
            int i;
            AVFrameSideData *sd;
@@ -62,60 +58,51 @@ static int decode_packet(const AVPacket *pkt)
                for (i = 0; i < sd->size / sizeof(*mvs); i++) {
                    const AVMotionVector *mv = &mvs[i];
                    printf("%d,%2d,%2d,%2d,%4d,%4d,%4d,%4d,0x%"PRIx64"\n",
-                        video_frame_count, mv->source,
+                           video_frame_count, mv->source,
-                        mv->w, mv->h, mv->src_x, mv->src_y,
+                           mv->w, mv->h, mv->src_x, mv->src_y,
-                        mv->dst_x, mv->dst_y, mv->flags);
+                           mv->dst_x, mv->dst_y, mv->flags);
                }
            }
            av_frame_unref(frame);
        }
    }
-    return 0;
+    return decoded;
 }
-static int open_codec_context(AVFormatContext *fmt_ctx, enum AVMediaType type)
+static int open_codec_context(int *stream_idx,
                              AVFormatContext *fmt_ctx, enum AVMediaType type)
 {
    int ret;
    AVStream *st;
    AVCodecContext *dec_ctx = NULL;
-    const AVCodec *dec = NULL;
+    AVCodec *dec = NULL;
    AVDictionary *opts = NULL;
-    ret = av_find_best_stream(fmt_ctx, type, -1, -1, &dec, 0);
+    ret = av_find_best_stream(fmt_ctx, type, -1, -1, NULL, 0);
    if (ret < 0) {
        fprintf(stderr, "Could not find %s stream in input file '%s'\n",
                av_get_media_type_string(type), src_filename);
        return ret;
    } else {
-        int stream_idx = ret;
+        *stream_idx = ret;
-        st = fmt_ctx->streams[stream_idx];
+        st = fmt_ctx->streams[*stream_idx];
-        dec_ctx = avcodec_alloc_context3(dec);
+        /* find decoder for the stream */
-        if (!dec_ctx) {
+        dec_ctx = st->codec;
-            fprintf(stderr, "Failed to allocate codec\n");
+        dec = avcodec_find_decoder(dec_ctx->codec_id);
        if (!dec) {
            fprintf(stderr, "Failed to find %s codec\n",
                    av_get_media_type_string(type));
            return AVERROR(EINVAL);
        }
        ret = avcodec_parameters_to_context(dec_ctx, st->codecpar);
        if (ret < 0) {
            fprintf(stderr, "Failed to copy codec parameters to codec context\n");
            return ret;
        }
        /* Init the video decoder */
        av_dict_set(&opts, "flags2", "+export_mvs", 0);
-        ret = avcodec_open2(dec_ctx, dec, &opts);
+        if ((ret = avcodec_open2(dec_ctx, dec, &opts)) < 0) {
        av_dict_free(&opts);
        if (ret < 0) {
            fprintf(stderr, "Failed to open %s codec\n",
                    av_get_media_type_string(type));
            return ret;
        }
        video_stream_idx = stream_idx;
        video_stream = fmt_ctx->streams[video_stream_idx];
        video_dec_ctx = dec_ctx;
    }
    return 0;
@@ -123,8 +110,7 @@ static int open_codec_context(AVFormatContext *fmt_ctx, enum AVMediaType type)
 int main(int argc, char **argv)
 {
-    int ret = 0;
+    int ret = 0, got_frame;
    AVPacket *pkt = NULL;
    if (argc != 2) {
        fprintf(stderr, "Usage: %s <video>\n", argv[0]);
@@ -132,6 +118,8 @@ int main(int argc, char **argv)
    }
    src_filename = argv[1];
    av_register_all();
    if (avformat_open_input(&fmt_ctx, src_filename, NULL, NULL) < 0) {
        fprintf(stderr, "Could not open source file %s\n", src_filename);
        exit(1);
@@ -142,7 +130,10 @@ int main(int argc, char **argv)
        exit(1);
    }
-    open_codec_context(fmt_ctx, AVMEDIA_TYPE_VIDEO);
+    if (open_codec_context(&video_stream_idx, fmt_ctx, AVMEDIA_TYPE_VIDEO) >= 0) {
        video_stream = fmt_ctx->streams[video_stream_idx];
        video_dec_ctx = video_stream->codec;
    }
    av_dump_format(fmt_ctx, 0, src_filename, 0);
@@ -159,31 +150,36 @@ int main(int argc, char **argv)
        goto end;
    }
    pkt = av_packet_alloc();
    if (!pkt) {
        fprintf(stderr, "Could not allocate AVPacket\n");
        ret = AVERROR(ENOMEM);
        goto end;
    }
    printf("framenum,source,blockw,blockh,srcx,srcy,dstx,dsty,flags\n");
    /* initialize packet, set data to NULL, let the demuxer fill it */
    av_init_packet(&pkt);
    pkt.data = NULL;
    pkt.size = 0;
    /* read frames from the file */
-    while (av_read_frame(fmt_ctx, pkt) >= 0) {
+    while (av_read_frame(fmt_ctx, &pkt) >= 0) {
-        if (pkt->stream_index == video_stream_idx)
+        AVPacket orig_pkt = pkt;
-            ret = decode_packet(pkt);
+        do {
-        av_packet_unref(pkt);
+            ret = decode_packet(&got_frame, 0);
-        if (ret < 0)
+            if (ret < 0)
-            break;
+                break;
            pkt.data += ret;
            pkt.size -= ret;
        } while (pkt.size > 0);
        av_packet_unref(&orig_pkt);
    }
    /* flush cached frames */
-    decode_packet(NULL);
+    pkt.data = NULL;
    pkt.size = 0;
    do {
        decode_packet(&got_frame, 1);
    } while (got_frame);
 end:
-    avcodec_free_context(&video_dec_ctx);
+    avcodec_close(video_dec_ctx);
    avformat_close_input(&fmt_ctx);
    av_frame_free(&frame);
    av_packet_free(&pkt);
    return ret < 0;
 }
--- a/doc/examples/filter_audio.c
+++ b/doc/examples/filter_audio.c
@@ -64,13 +64,13 @@ static int init_filter_graph(AVFilterGraph **graph, AVFilterContext **src,
 {
    AVFilterGraph *filter_graph;
    AVFilterContext *abuffer_ctx;
-    const AVFilter  *abuffer;
+    AVFilter        *abuffer;
    AVFilterContext *volume_ctx;
-    const AVFilter  *volume;
+    AVFilter        *volume;
    AVFilterContext *aformat_ctx;
-    const AVFilter  *aformat;
+    AVFilter        *aformat;
    AVFilterContext *abuffersink_ctx;
-    const AVFilter  *abuffersink;
+    AVFilter        *abuffersink;
    AVDictionary *options_dict = NULL;
    uint8_t options_str[1024];
@@ -289,6 +289,8 @@ int main(int argc, char *argv[])
        return 1;
    }
    avfilter_register_all();
    /* Allocate the frame we will be using to store the data. */
    frame  = av_frame_alloc();
    if (!frame) {
--- a/doc/examples/filtering_audio.c
+++ b/doc/examples/filtering_audio.c
@@ -32,9 +32,9 @@
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libavfilter/avfiltergraph.h>
 #include <libavfilter/buffersink.h>
 #include <libavfilter/buffersrc.h>
 #include <libavutil/channel_layout.h>
 #include <libavutil/opt.h>
 static const char *filter_descr = "aresample=8000,aformat=sample_fmts=s16:channel_layouts=mono";
@@ -49,8 +49,8 @@ static int audio_stream_index = -1;
 static int open_input_file(const char *filename)
 {
    const AVCodec *dec;
    int ret;
    AVCodec *dec;
    if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
        av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
@@ -69,12 +69,8 @@ static int open_input_file(const char *filename)
        return ret;
    }
    audio_stream_index = ret;
-
+    dec_ctx = fmt_ctx->streams[audio_stream_index]->codec;
-    /* create decoding context */
+    av_opt_set_int(dec_ctx, "refcounted_frames", 1, 0);
    dec_ctx = avcodec_alloc_context3(dec);
    if (!dec_ctx)
        return AVERROR(ENOMEM);
    avcodec_parameters_to_context(dec_ctx, fmt_ctx->streams[audio_stream_index]->codecpar);
    /* init the audio decoder */
    if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
@@ -89,8 +85,8 @@ static int init_filters(const char *filters_descr)
 {
    char args[512];
    int ret = 0;
-    const AVFilter *abuffersrc  = avfilter_get_by_name("abuffer");
+    AVFilter *abuffersrc  = avfilter_get_by_name("abuffer");
-    const AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
+    AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
    AVFilterInOut *outputs = avfilter_inout_alloc();
    AVFilterInOut *inputs  = avfilter_inout_alloc();
    static const enum AVSampleFormat out_sample_fmts[] = { AV_SAMPLE_FMT_S16, -1 };
@@ -200,7 +196,7 @@ end:
 static void print_frame(const AVFrame *frame)
 {
-    const int n = frame->nb_samples * av_get_channel_layout_nb_channels(frame->channel_layout);
+    const int n = frame->nb_samples * av_get_channel_layout_nb_channels(av_frame_get_channel_layout(frame));
    const uint16_t *p     = (uint16_t*)frame->data[0];
    const uint16_t *p_end = p + n;
@@ -215,12 +211,13 @@ static void print_frame(const AVFrame *frame)
 int main(int argc, char **argv)
 {
    int ret;
-    AVPacket *packet = av_packet_alloc();
+    AVPacket packet0, packet;
    AVFrame *frame = av_frame_alloc();
    AVFrame *filt_frame = av_frame_alloc();
    int got_frame;
-    if (!packet || !frame || !filt_frame) {
+    if (!frame || !filt_frame) {
-        fprintf(stderr, "Could not allocate frame or packet\n");
+        perror("Could not allocate frame");
        exit(1);
    }
    if (argc != 2) {
@@ -228,60 +225,64 @@ int main(int argc, char **argv)
        exit(1);
    }
    av_register_all();
    avfilter_register_all();
    if ((ret = open_input_file(argv[1])) < 0)
        goto end;
    if ((ret = init_filters(filter_descr)) < 0)
        goto end;
    /* read all packets */
    packet0.data = NULL;
    packet.data = NULL;
    while (1) {
-        if ((ret = av_read_frame(fmt_ctx, packet)) < 0)
+        if (!packet0.data) {
-            break;
+            if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
        if (packet->stream_index == audio_stream_index) {
            ret = avcodec_send_packet(dec_ctx, packet);
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Error while sending a packet to the decoder\n");
                break;
-            }
+            packet0 = packet;
-
+        }
-            while (ret >= 0) {
+
-                ret = avcodec_receive_frame(dec_ctx, frame);
+        if (packet.stream_index == audio_stream_index) {
-                if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
+            got_frame = 0;
-                    break;
+            ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, &packet);
-                } else if (ret < 0) {
+            if (ret < 0) {
-                    av_log(NULL, AV_LOG_ERROR, "Error while receiving a frame from the decoder\n");
+                av_log(NULL, AV_LOG_ERROR, "Error decoding audio\n");
-                    goto end;
+                continue;
-                }
+            }
-
+            packet.size -= ret;
-                if (ret >= 0) {
+            packet.data += ret;
-                    /* push the audio data from decoded frame into the filtergraph */
+
-                    if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
+            if (got_frame) {
-                        av_log(NULL, AV_LOG_ERROR, "Error while feeding the audio filtergraph\n");
+                /* push the audio data from decoded frame into the filtergraph */
-                        break;
+                if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, 0) < 0) {
-                    }
+                    av_log(NULL, AV_LOG_ERROR, "Error while feeding the audio filtergraph\n");
-
+                    break;
-                    /* pull filtered audio from the filtergraph */
+                }
-                    while (1) {
+
-                        ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
+                /* pull filtered audio from the filtergraph */
-                        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
+                while (1) {
-                            break;
+                    ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
-                        if (ret < 0)
+                    if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-                            goto end;
+                        break;
-                        print_frame(filt_frame);
+                    if (ret < 0)
-                        av_frame_unref(filt_frame);
+                        goto end;
-                    }
+                    print_frame(filt_frame);
-                    av_frame_unref(frame);
+                    av_frame_unref(filt_frame);
-                }
+                }
-            }
+            }
            if (packet.size <= 0)
                av_packet_unref(&packet0);
        } else {
            /* discard non-wanted packets */
            av_packet_unref(&packet0);
        }
        av_packet_unref(packet);
    }
 end:
    avfilter_graph_free(&filter_graph);
-    avcodec_free_context(&dec_ctx);
+    avcodec_close(dec_ctx);
    avformat_close_input(&fmt_ctx);
    av_packet_free(&packet);
    av_frame_free(&frame);
    av_frame_free(&filt_frame);
--- a/doc/examples/filtering_video.c
+++ b/doc/examples/filtering_video.c
@@ -29,11 +29,10 @@
 #define _XOPEN_SOURCE 600 /* for usleep */
 #include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libavfilter/avfiltergraph.h>
 #include <libavfilter/buffersink.h>
 #include <libavfilter/buffersrc.h>
 #include <libavutil/opt.h>
@@ -53,8 +52,8 @@ static int64_t last_pts = AV_NOPTS_VALUE;
 static int open_input_file(const char *filename)
 {
    const AVCodec *dec;
    int ret;
    AVCodec *dec;
    if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
        av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
@@ -73,12 +72,8 @@ static int open_input_file(const char *filename)
        return ret;
    }
    video_stream_index = ret;
-
+    dec_ctx = fmt_ctx->streams[video_stream_index]->codec;
-    /* create decoding context */
+    av_opt_set_int(dec_ctx, "refcounted_frames", 1, 0);
    dec_ctx = avcodec_alloc_context3(dec);
    if (!dec_ctx)
        return AVERROR(ENOMEM);
    avcodec_parameters_to_context(dec_ctx, fmt_ctx->streams[video_stream_index]->codecpar);
    /* init the video decoder */
    if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
@@ -93,8 +88,8 @@ static int init_filters(const char *filters_descr)
 {
    char args[512];
    int ret = 0;
-    const AVFilter *buffersrc  = avfilter_get_by_name("buffer");
+    AVFilter *buffersrc  = avfilter_get_by_name("buffer");
-    const AVFilter *buffersink = avfilter_get_by_name("buffersink");
+    AVFilter *buffersink = avfilter_get_by_name("buffersink");
    AVFilterInOut *outputs = avfilter_inout_alloc();
    AVFilterInOut *inputs  = avfilter_inout_alloc();
    AVRational time_base = fmt_ctx->streams[video_stream_index]->time_base;
@@ -210,22 +205,22 @@ static void display_frame(const AVFrame *frame, AVRational time_base)
 int main(int argc, char **argv)
 {
    int ret;
-    AVPacket *packet;
+    AVPacket packet;
-    AVFrame *frame;
+    AVFrame *frame = av_frame_alloc();
-    AVFrame *filt_frame;
+    AVFrame *filt_frame = av_frame_alloc();
    int got_frame;
    if (!frame || !filt_frame) {
        perror("Could not allocate frame");
        exit(1);
    }
    if (argc != 2) {
        fprintf(stderr, "Usage: %s file\n", argv[0]);
        exit(1);
    }
-    frame = av_frame_alloc();
+    av_register_all();
-    filt_frame = av_frame_alloc();
+    avfilter_register_all();
    packet = av_packet_alloc();
    if (!frame || !filt_frame || !packet) {
        fprintf(stderr, "Could not allocate frame or packet\n");
        exit(1);
    }
    if ((ret = open_input_file(argv[1])) < 0)
        goto end;
@@ -234,26 +229,19 @@ int main(int argc, char **argv)
    /* read all packets */
    while (1) {
-        if ((ret = av_read_frame(fmt_ctx, packet)) < 0)
+        if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
            break;
-        if (packet->stream_index == video_stream_index) {
+        if (packet.stream_index == video_stream_index) {
-            ret = avcodec_send_packet(dec_ctx, packet);
+            got_frame = 0;
            ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, &packet);
            if (ret < 0) {
-                av_log(NULL, AV_LOG_ERROR, "Error while sending a packet to the decoder\n");
+                av_log(NULL, AV_LOG_ERROR, "Error decoding video\n");
                break;
            }
-            while (ret >= 0) {
+            if (got_frame) {
-                ret = avcodec_receive_frame(dec_ctx, frame);
+                frame->pts = av_frame_get_best_effort_timestamp(frame);
                if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
                    break;
                } else if (ret < 0) {
                    av_log(NULL, AV_LOG_ERROR, "Error while receiving a frame from the decoder\n");
                    goto end;
                }
                frame->pts = frame->best_effort_timestamp;
                /* push the decoded frame into the filtergraph */
                if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
@@ -274,15 +262,14 @@ int main(int argc, char **argv)
                av_frame_unref(frame);
            }
        }
-        av_packet_unref(packet);
+        av_packet_unref(&packet);
    }
 end:
    avfilter_graph_free(&filter_graph);
-    avcodec_free_context(&dec_ctx);
+    avcodec_close(dec_ctx);
    avformat_close_input(&fmt_ctx);
    av_frame_free(&frame);
    av_frame_free(&filt_frame);
    av_packet_free(&packet);
    if (ret < 0 && ret != AVERROR_EOF) {
        fprintf(stderr, "Error occurred: %s\n", av_err2str(ret));
--- a/doc/examples/http_multiclient.c
+++ b/doc/examples/http_multiclient.c
@@ -33,19 +33,18 @@
 #include <libavutil/opt.h>
 #include <unistd.h>
-static void process_client(AVIOContext *client, const char *in_uri)
+void process_client(AVIOContext *client, const char *in_uri)
 {
    AVIOContext *input = NULL;
    uint8_t buf[1024];
    int ret, n, reply_code;
-    uint8_t *resource = NULL;
+    char *resource = NULL;
    while ((ret = avio_handshake(client)) > 0) {
        av_opt_get(client, "resource", AV_OPT_SEARCH_CHILDREN, &resource);
        // check for strlen(resource) is necessary, because av_opt_get()
        // may return empty string.
        if (resource && strlen(resource))
            break;
        av_freep(&resource);
    }
    if (ret < 0)
        goto end;
@@ -94,16 +93,15 @@ end:
    avio_close(client);
    fprintf(stderr, "Closing input\n");
    avio_close(input);
    av_freep(&resource);
 }
 int main(int argc, char **argv)
 {
    av_log_set_level(AV_LOG_TRACE);
    AVDictionary *options = NULL;
    AVIOContext *client = NULL, *server = NULL;
    const char *in_uri, *out_uri;
    int ret, pid;
    av_log_set_level(AV_LOG_TRACE);
    if (argc < 3) {
        printf("usage: %s input http://hostname[:port]\n"
               "API example program to serve http to multiple clients.\n"
@@ -114,6 +112,7 @@ int main(int argc, char **argv)
    in_uri = argv[1];
    out_uri = argv[2];
    av_register_all();
    avformat_network_init();
    if ((ret = av_dict_set(&options, "listen", "2", 0)) < 0) {
--- a/doc/examples/hw_decode.c
+++ b/doc/examples/hw_decode.c
@@ -1,256 +0,0 @@
 /*
 * Copyright (c) 2017 Jun Zhao
 * Copyright (c) 2017 Kaixuan Liu
 *
 * HW Acceleration API (video decoding) decode sample
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * HW-Accelerated decoding example.
 *
 * @example hw_decode.c
 * This example shows how to do HW-accelerated decoding with output
 * frames from the HW video surfaces.
 */
 #include <stdio.h>
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libavutil/pixdesc.h>
 #include <libavutil/hwcontext.h>
 #include <libavutil/opt.h>
 #include <libavutil/avassert.h>
 #include <libavutil/imgutils.h>
 static AVBufferRef *hw_device_ctx = NULL;
 static enum AVPixelFormat hw_pix_fmt;
 static FILE *output_file = NULL;
 static int hw_decoder_init(AVCodecContext *ctx, const enum AVHWDeviceType type)
 {
    int err = 0;
    if ((err = av_hwdevice_ctx_create(&hw_device_ctx, type,
                                      NULL, NULL, 0)) < 0) {
        fprintf(stderr, "Failed to create specified HW device.\n");
        return err;
    }
    ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
    return err;
 }
 static enum AVPixelFormat get_hw_format(AVCodecContext *ctx,
                                        const enum AVPixelFormat *pix_fmts)
 {
    const enum AVPixelFormat *p;
    for (p = pix_fmts; *p != -1; p++) {
        if (*p == hw_pix_fmt)
            return *p;
    }
    fprintf(stderr, "Failed to get HW surface format.\n");
    return AV_PIX_FMT_NONE;
 }
 static int decode_write(AVCodecContext *avctx, AVPacket *packet)
 {
    AVFrame *frame = NULL, *sw_frame = NULL;
    AVFrame *tmp_frame = NULL;
    uint8_t *buffer = NULL;
    int size;
    int ret = 0;
    ret = avcodec_send_packet(avctx, packet);
    if (ret < 0) {
        fprintf(stderr, "Error during decoding\n");
        return ret;
    }
    while (1) {
        if (!(frame = av_frame_alloc()) || !(sw_frame = av_frame_alloc())) {
            fprintf(stderr, "Can not alloc frame\n");
            ret = AVERROR(ENOMEM);
            goto fail;
        }
        ret = avcodec_receive_frame(avctx, frame);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
            av_frame_free(&frame);
            av_frame_free(&sw_frame);
            return 0;
        } else if (ret < 0) {
            fprintf(stderr, "Error while decoding\n");
            goto fail;
        }
        if (frame->format == hw_pix_fmt) {
            /* retrieve data from GPU to CPU */
            if ((ret = av_hwframe_transfer_data(sw_frame, frame, 0)) < 0) {
                fprintf(stderr, "Error transferring the data to system memory\n");
                goto fail;
            }
            tmp_frame = sw_frame;
        } else
            tmp_frame = frame;
        size = av_image_get_buffer_size(tmp_frame->format, tmp_frame->width,
                                        tmp_frame->height, 1);
        buffer = av_malloc(size);
        if (!buffer) {
            fprintf(stderr, "Can not alloc buffer\n");
            ret = AVERROR(ENOMEM);
            goto fail;
        }
        ret = av_image_copy_to_buffer(buffer, size,
                                      (const uint8_t * const *)tmp_frame->data,
                                      (const int *)tmp_frame->linesize, tmp_frame->format,
                                      tmp_frame->width, tmp_frame->height, 1);
        if (ret < 0) {
            fprintf(stderr, "Can not copy image to buffer\n");
            goto fail;
        }
        if ((ret = fwrite(buffer, 1, size, output_file)) < 0) {
            fprintf(stderr, "Failed to dump raw data.\n");
            goto fail;
        }
    fail:
        av_frame_free(&frame);
        av_frame_free(&sw_frame);
        av_freep(&buffer);
        if (ret < 0)
            return ret;
    }
 }
 int main(int argc, char *argv[])
 {
    AVFormatContext *input_ctx = NULL;
    int video_stream, ret;
    AVStream *video = NULL;
    AVCodecContext *decoder_ctx = NULL;
    const AVCodec *decoder = NULL;
    AVPacket *packet = NULL;
    enum AVHWDeviceType type;
    int i;
    if (argc < 4) {
        fprintf(stderr, "Usage: %s <device type> <input file> <output file>\n", argv[0]);
        return -1;
    }
    type = av_hwdevice_find_type_by_name(argv[1]);
    if (type == AV_HWDEVICE_TYPE_NONE) {
        fprintf(stderr, "Device type %s is not supported.\n", argv[1]);
        fprintf(stderr, "Available device types:");
        while((type = av_hwdevice_iterate_types(type)) != AV_HWDEVICE_TYPE_NONE)
            fprintf(stderr, " %s", av_hwdevice_get_type_name(type));
        fprintf(stderr, "\n");
        return -1;
    }
    packet = av_packet_alloc();
    if (!packet) {
        fprintf(stderr, "Failed to allocate AVPacket\n");
        return -1;
    }
    /* open the input file */
    if (avformat_open_input(&input_ctx, argv[2], NULL, NULL) != 0) {
        fprintf(stderr, "Cannot open input file '%s'\n", argv[2]);
        return -1;
    }
    if (avformat_find_stream_info(input_ctx, NULL) < 0) {
        fprintf(stderr, "Cannot find input stream information.\n");
        return -1;
    }
    /* find the video stream information */
    ret = av_find_best_stream(input_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0);
    if (ret < 0) {
        fprintf(stderr, "Cannot find a video stream in the input file\n");
        return -1;
    }
    video_stream = ret;
    for (i = 0;; i++) {
        const AVCodecHWConfig *config = avcodec_get_hw_config(decoder, i);
        if (!config) {
            fprintf(stderr, "Decoder %s does not support device type %s.\n",
                    decoder->name, av_hwdevice_get_type_name(type));
            return -1;
        }
        if (config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX &&
            config->device_type == type) {
            hw_pix_fmt = config->pix_fmt;
            break;
        }
    }
    if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
        return AVERROR(ENOMEM);
    video = input_ctx->streams[video_stream];
    if (avcodec_parameters_to_context(decoder_ctx, video->codecpar) < 0)
        return -1;
    decoder_ctx->get_format  = get_hw_format;
    if (hw_decoder_init(decoder_ctx, type) < 0)
        return -1;
    if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0) {
        fprintf(stderr, "Failed to open codec for stream #%u\n", video_stream);
        return -1;
    }
    /* open the file to dump raw data */
    output_file = fopen(argv[3], "w+b");
    /* actual decoding and dump the raw data */
    while (ret >= 0) {
        if ((ret = av_read_frame(input_ctx, packet)) < 0)
            break;
        if (video_stream == packet->stream_index)
            ret = decode_write(decoder_ctx, packet);
        av_packet_unref(packet);
    }
    /* flush the decoder */
    ret = decode_write(decoder_ctx, NULL);
    if (output_file)
        fclose(output_file);
    av_packet_free(&packet);
    avcodec_free_context(&decoder_ctx);
    avformat_close_input(&input_ctx);
    av_buffer_unref(&hw_device_ctx);
    return 0;
 }
--- a/doc/examples/metadata.c
+++ b/doc/examples/metadata.c
@@ -34,7 +34,7 @@
 int main (int argc, char **argv)
 {
    AVFormatContext *fmt_ctx = NULL;
-    const AVDictionaryEntry *tag = NULL;
+    AVDictionaryEntry *tag = NULL;
    int ret;
    if (argc != 2) {
@@ -44,14 +44,10 @@ int main (int argc, char **argv)
        return 1;
    }
    av_register_all();
    if ((ret = avformat_open_input(&fmt_ctx, argv[1], NULL, NULL)))
        return ret;
    if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
        av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
        return ret;
    }
    while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
        printf("%s=%s\n", tag->key, tag->value);
--- a/doc/examples/muxing.c
+++ b/doc/examples/muxing.c
@@ -39,7 +39,6 @@
 #include <libavutil/opt.h>
 #include <libavutil/mathematics.h>
 #include <libavutil/timestamp.h>
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libswscale/swscale.h>
 #include <libswresample/swresample.h>
@@ -62,8 +61,6 @@ typedef struct OutputStream {
    AVFrame *frame;
    AVFrame *tmp_frame;
    AVPacket *tmp_pkt;
    float t, tincr, tincr2;
    struct SwsContext *sws_ctx;
@@ -81,50 +78,20 @@ static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt)
           pkt->stream_index);
 }
-static int write_frame(AVFormatContext *fmt_ctx, AVCodecContext *c,
+static int write_frame(AVFormatContext *fmt_ctx, const AVRational *time_base, AVStream *st, AVPacket *pkt)
                       AVStream *st, AVFrame *frame, AVPacket *pkt)
 {
-    int ret;
+    /* rescale output packet timestamp values from codec to stream timebase */
    av_packet_rescale_ts(pkt, *time_base, st->time_base);
    pkt->stream_index = st->index;
-    // send the frame to the encoder
+    /* Write the compressed frame to the media file. */
-    ret = avcodec_send_frame(c, frame);
+    log_packet(fmt_ctx, pkt);
-    if (ret < 0) {
+    return av_interleaved_write_frame(fmt_ctx, pkt);
        fprintf(stderr, "Error sending a frame to the encoder: %s\n",
                av_err2str(ret));
        exit(1);
    }
    while (ret >= 0) {
        ret = avcodec_receive_packet(c, pkt);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
            break;
        else if (ret < 0) {
            fprintf(stderr, "Error encoding a frame: %s\n", av_err2str(ret));
            exit(1);
        }
        /* rescale output packet timestamp values from codec to stream timebase */
        av_packet_rescale_ts(pkt, c->time_base, st->time_base);
        pkt->stream_index = st->index;
        /* Write the compressed frame to the media file. */
        log_packet(fmt_ctx, pkt);
        ret = av_interleaved_write_frame(fmt_ctx, pkt);
        /* pkt is now blank (av_interleaved_write_frame() takes ownership of
         * its contents and resets pkt), so that no unreferencing is necessary.
         * This would be different if one used av_write_frame(). */
        if (ret < 0) {
            fprintf(stderr, "Error while writing output packet: %s\n", av_err2str(ret));
            exit(1);
        }
    }
    return ret == AVERROR_EOF ? 1 : 0;
 }
 /* Add an output stream. */
 static void add_stream(OutputStream *ost, AVFormatContext *oc,
-                       const AVCodec **codec,
+                       AVCodec **codec,
                       enum AVCodecID codec_id)
 {
    AVCodecContext *c;
@@ -138,12 +105,6 @@ static void add_stream(OutputStream *ost, AVFormatContext *oc,
        exit(1);
    }
    ost->tmp_pkt = av_packet_alloc();
    if (!ost->tmp_pkt) {
        fprintf(stderr, "Could not allocate AVPacket\n");
        exit(1);
    }
    ost->st = avformat_new_stream(oc, NULL);
    if (!ost->st) {
        fprintf(stderr, "Could not allocate stream\n");
@@ -209,7 +170,7 @@ static void add_stream(OutputStream *ost, AVFormatContext *oc,
             * the motion of the chroma plane does not match the luma plane. */
            c->mb_decision = 2;
        }
-        break;
+    break;
    default:
        break;
@@ -251,8 +212,7 @@ static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
    return frame;
 }
-static void open_audio(AVFormatContext *oc, const AVCodec *codec,
+static void open_audio(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
                       OutputStream *ost, AVDictionary *opt_arg)
 {
    AVCodecContext *c;
    int nb_samples;
@@ -294,25 +254,25 @@ static void open_audio(AVFormatContext *oc, const AVCodec *codec,
    }
    /* create resampler context */
-    ost->swr_ctx = swr_alloc();
+        ost->swr_ctx = swr_alloc();
-    if (!ost->swr_ctx) {
+        if (!ost->swr_ctx) {
-        fprintf(stderr, "Could not allocate resampler context\n");
+            fprintf(stderr, "Could not allocate resampler context\n");
-        exit(1);
+            exit(1);
-    }
+        }
-    /* set options */
+        /* set options */
-    av_opt_set_int       (ost->swr_ctx, "in_channel_count",   c->channels,       0);
+        av_opt_set_int       (ost->swr_ctx, "in_channel_count",   c->channels,       0);
-    av_opt_set_int       (ost->swr_ctx, "in_sample_rate",     c->sample_rate,    0);
+        av_opt_set_int       (ost->swr_ctx, "in_sample_rate",     c->sample_rate,    0);
-    av_opt_set_sample_fmt(ost->swr_ctx, "in_sample_fmt",      AV_SAMPLE_FMT_S16, 0);
+        av_opt_set_sample_fmt(ost->swr_ctx, "in_sample_fmt",      AV_SAMPLE_FMT_S16, 0);
-    av_opt_set_int       (ost->swr_ctx, "out_channel_count",  c->channels,       0);
+        av_opt_set_int       (ost->swr_ctx, "out_channel_count",  c->channels,       0);
-    av_opt_set_int       (ost->swr_ctx, "out_sample_rate",    c->sample_rate,    0);
+        av_opt_set_int       (ost->swr_ctx, "out_sample_rate",    c->sample_rate,    0);
-    av_opt_set_sample_fmt(ost->swr_ctx, "out_sample_fmt",     c->sample_fmt,     0);
+        av_opt_set_sample_fmt(ost->swr_ctx, "out_sample_fmt",     c->sample_fmt,     0);
-    /* initialize the resampling context */
+        /* initialize the resampling context */
-    if ((ret = swr_init(ost->swr_ctx)) < 0) {
+        if ((ret = swr_init(ost->swr_ctx)) < 0) {
-        fprintf(stderr, "Failed to initialize the resampling context\n");
+            fprintf(stderr, "Failed to initialize the resampling context\n");
-        exit(1);
+            exit(1);
-    }
+        }
 }
 /* Prepare a 16 bit dummy audio frame of 'frame_size' samples and
@@ -325,7 +285,7 @@ static AVFrame *get_audio_frame(OutputStream *ost)
    /* check if we want to generate more frames */
    if (av_compare_ts(ost->next_pts, ost->enc->time_base,
-                      STREAM_DURATION, (AVRational){ 1, 1 }) > 0)
+                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
        return NULL;
    for (j = 0; j <frame->nb_samples; j++) {
@@ -349,20 +309,23 @@ static AVFrame *get_audio_frame(OutputStream *ost)
 static int write_audio_frame(AVFormatContext *oc, OutputStream *ost)
 {
    AVCodecContext *c;
    AVPacket pkt = { 0 }; // data and size must be 0;
    AVFrame *frame;
    int ret;
    int got_packet;
    int dst_nb_samples;
    av_init_packet(&pkt);
    c = ost->enc;
    frame = get_audio_frame(ost);
    if (frame) {
        /* convert samples from native format to destination codec format, using the resampler */
-        /* compute destination number of samples */
+            /* compute destination number of samples */
-        dst_nb_samples = av_rescale_rnd(swr_get_delay(ost->swr_ctx, c->sample_rate) + frame->nb_samples,
+            dst_nb_samples = av_rescale_rnd(swr_get_delay(ost->swr_ctx, c->sample_rate) + frame->nb_samples,
-                                        c->sample_rate, c->sample_rate, AV_ROUND_UP);
+                                            c->sample_rate, c->sample_rate, AV_ROUND_UP);
-        av_assert0(dst_nb_samples == frame->nb_samples);
+            av_assert0(dst_nb_samples == frame->nb_samples);
        /* when we pass a frame to the encoder, it may keep a reference to it
         * internally;
@@ -372,21 +335,36 @@ static int write_audio_frame(AVFormatContext *oc, OutputStream *ost)
        if (ret < 0)
            exit(1);
-        /* convert to destination format */
+            /* convert to destination format */
-        ret = swr_convert(ost->swr_ctx,
+            ret = swr_convert(ost->swr_ctx,
-                          ost->frame->data, dst_nb_samples,
+                              ost->frame->data, dst_nb_samples,
-                          (const uint8_t **)frame->data, frame->nb_samples);
+                              (const uint8_t **)frame->data, frame->nb_samples);
-        if (ret < 0) {
+            if (ret < 0) {
-            fprintf(stderr, "Error while converting\n");
+                fprintf(stderr, "Error while converting\n");
-            exit(1);
+                exit(1);
-        }
+            }
-        frame = ost->frame;
+            frame = ost->frame;
        frame->pts = av_rescale_q(ost->samples_count, (AVRational){1, c->sample_rate}, c->time_base);
        ost->samples_count += dst_nb_samples;
    }
-    return write_frame(oc, c, ost->st, frame, ost->tmp_pkt);
+    ret = avcodec_encode_audio2(c, &pkt, frame, &got_packet);
    if (ret < 0) {
        fprintf(stderr, "Error encoding audio frame: %s\n", av_err2str(ret));
        exit(1);
    }
    if (got_packet) {
        ret = write_frame(oc, &c->time_base, ost->st, &pkt);
        if (ret < 0) {
            fprintf(stderr, "Error while writing audio frame: %s\n",
                    av_err2str(ret));
            exit(1);
        }
    }
    return (frame || got_packet) ? 0 : 1;
 }
 /**************************************************************/
@@ -406,7 +384,7 @@ static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
    picture->height = height;
    /* allocate the buffers for the frame data */
-    ret = av_frame_get_buffer(picture, 0);
+    ret = av_frame_get_buffer(picture, 32);
    if (ret < 0) {
        fprintf(stderr, "Could not allocate frame data.\n");
        exit(1);
@@ -415,8 +393,7 @@ static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
    return picture;
 }
-static void open_video(AVFormatContext *oc, const AVCodec *codec,
+static void open_video(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
                       OutputStream *ost, AVDictionary *opt_arg)
 {
    int ret;
    AVCodecContext *c = ost->enc;
@@ -463,7 +440,15 @@ static void open_video(AVFormatContext *oc, const AVCodec *codec,
 static void fill_yuv_image(AVFrame *pict, int frame_index,
                           int width, int height)
 {
-    int x, y, i;
+    int x, y, i, ret;
    /* when we pass a frame to the encoder, it may keep a reference to it
     * internally;
     * make sure we do not overwrite it here
     */
    ret = av_frame_make_writable(pict);
    if (ret < 0)
        exit(1);
    i = frame_index;
@@ -487,14 +472,9 @@ static AVFrame *get_video_frame(OutputStream *ost)
    /* check if we want to generate more frames */
    if (av_compare_ts(ost->next_pts, c->time_base,
-                      STREAM_DURATION, (AVRational){ 1, 1 }) > 0)
+                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
        return NULL;
    /* when we pass a frame to the encoder, it may keep a reference to it
     * internally; make sure we do not overwrite it here */
    if (av_frame_make_writable(ost->frame) < 0)
        exit(1);
    if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
        /* as we only generate a YUV420P picture, we must convert it
         * to the codec pixel format if needed */
@@ -511,9 +491,9 @@ static AVFrame *get_video_frame(OutputStream *ost)
            }
        }
        fill_yuv_image(ost->tmp_frame, ost->next_pts, c->width, c->height);
-        sws_scale(ost->sws_ctx, (const uint8_t * const *) ost->tmp_frame->data,
+        sws_scale(ost->sws_ctx,
-                  ost->tmp_frame->linesize, 0, c->height, ost->frame->data,
+                  (const uint8_t * const *)ost->tmp_frame->data, ost->tmp_frame->linesize,
-                  ost->frame->linesize);
+                  0, c->height, ost->frame->data, ost->frame->linesize);
    } else {
        fill_yuv_image(ost->frame, ost->next_pts, c->width, c->height);
    }
@@ -529,7 +509,37 @@ static AVFrame *get_video_frame(OutputStream *ost)
 */
 static int write_video_frame(AVFormatContext *oc, OutputStream *ost)
 {
-    return write_frame(oc, ost->enc, ost->st, get_video_frame(ost), ost->tmp_pkt);
+    int ret;
    AVCodecContext *c;
    AVFrame *frame;
    int got_packet = 0;
    AVPacket pkt = { 0 };
    c = ost->enc;
    frame = get_video_frame(ost);
    av_init_packet(&pkt);
    /* encode the image */
    ret = avcodec_encode_video2(c, &pkt, frame, &got_packet);
    if (ret < 0) {
        fprintf(stderr, "Error encoding video frame: %s\n", av_err2str(ret));
        exit(1);
    }
    if (got_packet) {
        ret = write_frame(oc, &c->time_base, ost->st, &pkt);
    } else {
        ret = 0;
    }
    if (ret < 0) {
        fprintf(stderr, "Error while writing video frame: %s\n", av_err2str(ret));
        exit(1);
    }
    return (frame || got_packet) ? 0 : 1;
 }
 static void close_stream(AVFormatContext *oc, OutputStream *ost)
@@ -537,7 +547,6 @@ static void close_stream(AVFormatContext *oc, OutputStream *ost)
    avcodec_free_context(&ost->enc);
    av_frame_free(&ost->frame);
    av_frame_free(&ost->tmp_frame);
    av_packet_free(&ost->tmp_pkt);
    sws_freeContext(ost->sws_ctx);
    swr_free(&ost->swr_ctx);
 }
@@ -548,16 +557,19 @@ static void close_stream(AVFormatContext *oc, OutputStream *ost)
 int main(int argc, char **argv)
 {
    OutputStream video_st = { 0 }, audio_st = { 0 };
    const AVOutputFormat *fmt;
    const char *filename;
    AVOutputFormat *fmt;
    AVFormatContext *oc;
-    const AVCodec *audio_codec, *video_codec;
+    AVCodec *audio_codec, *video_codec;
    int ret;
    int have_video = 0, have_audio = 0;
    int encode_video = 0, encode_audio = 0;
    AVDictionary *opt = NULL;
    int i;
    /* Initialize libavcodec, and register all codecs and formats. */
    av_register_all();
    if (argc < 2) {
        printf("usage: %s output_file\n"
               "API example program to output a media file with libavformat.\n"
--- a/doc/examples/qsvdec.c
+++ b/doc/examples/qsvdec.c
@@ -26,28 +26,186 @@
 *
 * @example qsvdec.c
 * This example shows how to do QSV-accelerated H.264 decoding with output
- * frames in the GPU video surfaces.
+ * frames in the VA-API video surfaces.
 */
 #include "config.h"
 #include <stdio.h>
 #include <mfx/mfxvideo.h>
 #include <va/va.h>
 #include <va/va_x11.h>
 #include <X11/Xlib.h>
 #include "libavformat/avformat.h"
 #include "libavformat/avio.h"
 #include "libavcodec/avcodec.h"
 #include "libavcodec/qsv.h"
 #include "libavutil/buffer.h"
 #include "libavutil/error.h"
 #include "libavutil/hwcontext.h"
 #include "libavutil/hwcontext_qsv.h"
 #include "libavutil/mem.h"
 typedef struct DecodeContext {
    mfxSession mfx_session;
    VADisplay va_dpy;
    VASurfaceID *surfaces;
    mfxMemId    *surface_ids;
    int         *surface_used;
    int       nb_surfaces;
    mfxFrameInfo frame_info;
 } DecodeContext;
 static mfxStatus frame_alloc(mfxHDL pthis, mfxFrameAllocRequest *req,
                             mfxFrameAllocResponse *resp)
 {
    DecodeContext *decode = pthis;
    int err, i;
    if (decode->surfaces) {
        fprintf(stderr, "Multiple allocation requests.\n");
        return MFX_ERR_MEMORY_ALLOC;
    }
    if (!(req->Type & MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET)) {
        fprintf(stderr, "Unsupported surface type: %d\n", req->Type);
        return MFX_ERR_UNSUPPORTED;
    }
    if (req->Info.BitDepthLuma != 8 || req->Info.BitDepthChroma != 8 ||
        req->Info.Shift || req->Info.FourCC != MFX_FOURCC_NV12 ||
        req->Info.ChromaFormat != MFX_CHROMAFORMAT_YUV420) {
        fprintf(stderr, "Unsupported surface properties.\n");
        return MFX_ERR_UNSUPPORTED;
    }
    decode->surfaces     = av_malloc_array (req->NumFrameSuggested, sizeof(*decode->surfaces));
    decode->surface_ids  = av_malloc_array (req->NumFrameSuggested, sizeof(*decode->surface_ids));
    decode->surface_used = av_mallocz_array(req->NumFrameSuggested, sizeof(*decode->surface_used));
    if (!decode->surfaces || !decode->surface_ids || !decode->surface_used)
        goto fail;
    err = vaCreateSurfaces(decode->va_dpy, VA_RT_FORMAT_YUV420,
                           req->Info.Width, req->Info.Height,
                           decode->surfaces, req->NumFrameSuggested,
                           NULL, 0);
    if (err != VA_STATUS_SUCCESS) {
        fprintf(stderr, "Error allocating VA surfaces\n");
        goto fail;
    }
    decode->nb_surfaces = req->NumFrameSuggested;
    for (i = 0; i < decode->nb_surfaces; i++)
        decode->surface_ids[i] = &decode->surfaces[i];
    resp->mids           = decode->surface_ids;
    resp->NumFrameActual = decode->nb_surfaces;
    decode->frame_info = req->Info;
    return MFX_ERR_NONE;
 fail:
    av_freep(&decode->surfaces);
    av_freep(&decode->surface_ids);
    av_freep(&decode->surface_used);
    return MFX_ERR_MEMORY_ALLOC;
 }
 static mfxStatus frame_free(mfxHDL pthis, mfxFrameAllocResponse *resp)
 {
    return MFX_ERR_NONE;
 }
 static mfxStatus frame_lock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
 {
    return MFX_ERR_UNSUPPORTED;
 }
 static mfxStatus frame_unlock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
 {
    return MFX_ERR_UNSUPPORTED;
 }
 static mfxStatus frame_get_hdl(mfxHDL pthis, mfxMemId mid, mfxHDL *hdl)
 {
    *hdl = mid;
    return MFX_ERR_NONE;
 }
 static void free_surfaces(DecodeContext *decode)
 {
    if (decode->surfaces)
        vaDestroySurfaces(decode->va_dpy, decode->surfaces, decode->nb_surfaces);
    av_freep(&decode->surfaces);
    av_freep(&decode->surface_ids);
    av_freep(&decode->surface_used);
    decode->nb_surfaces = 0;
 }
 static void free_buffer(void *opaque, uint8_t *data)
 {
    int *used = opaque;
    *used = 0;
    av_freep(&data);
 }
 static int get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
 {
    DecodeContext *decode = avctx->opaque;
    mfxFrameSurface1 *surf;
    AVBufferRef *surf_buf;
    int idx;
    for (idx = 0; idx < decode->nb_surfaces; idx++) {
        if (!decode->surface_used[idx])
            break;
    }
    if (idx == decode->nb_surfaces) {
        fprintf(stderr, "No free surfaces\n");
        return AVERROR(ENOMEM);
    }
    surf = av_mallocz(sizeof(*surf));
    if (!surf)
        return AVERROR(ENOMEM);
    surf_buf = av_buffer_create((uint8_t*)surf, sizeof(*surf), free_buffer,
                                &decode->surface_used[idx], AV_BUFFER_FLAG_READONLY);
    if (!surf_buf) {
        av_freep(&surf);
        return AVERROR(ENOMEM);
    }
    surf->Info       = decode->frame_info;
    surf->Data.MemId = &decode->surfaces[idx];
    frame->buf[0]  = surf_buf;
    frame->data[3] = (uint8_t*)surf;
    decode->surface_used[idx] = 1;
    return 0;
 }
 static int get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts)
 {
    while (*pix_fmts != AV_PIX_FMT_NONE) {
        if (*pix_fmts == AV_PIX_FMT_QSV) {
            if (!avctx->hwaccel_context) {
                DecodeContext *decode = avctx->opaque;
                AVQSVContext *qsv = av_qsv_alloc_context();
                if (!qsv)
                    return AV_PIX_FMT_NONE;
                qsv->session   = decode->mfx_session;
                qsv->iopattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
                avctx->hwaccel_context = qsv;
            }
            return AV_PIX_FMT_QSV;
        }
@@ -59,48 +217,87 @@ static int get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts)
    return AV_PIX_FMT_NONE;
 }
-static int decode_packet(AVCodecContext *decoder_ctx,
+static int decode_packet(DecodeContext *decode, AVCodecContext *decoder_ctx,
-                         AVFrame *frame, AVFrame *sw_frame,
+                         AVFrame *frame, AVPacket *pkt,
-                         AVPacket *pkt, AVIOContext *output_ctx)
+                         AVIOContext *output_ctx)
 {
    int ret = 0;
    int got_frame = 1;
-    ret = avcodec_send_packet(decoder_ctx, pkt);
+    while (pkt->size > 0 || (!pkt->data && got_frame)) {
-    if (ret < 0) {
+        ret = avcodec_decode_video2(decoder_ctx, frame, &got_frame, pkt);
-        fprintf(stderr, "Error during decoding\n");
+        if (ret < 0) {
        return ret;
    }
    while (ret >= 0) {
        int i, j;
        ret = avcodec_receive_frame(decoder_ctx, frame);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
            break;
        else if (ret < 0) {
            fprintf(stderr, "Error during decoding\n");
            return ret;
        }
        pkt->data += ret;
        pkt->size -= ret;
        /* A real program would do something useful with the decoded frame here.
         * We just retrieve the raw data and write it to a file, which is rather
         * useless but pedagogic. */
-        ret = av_hwframe_transfer_data(sw_frame, frame, 0);
+        if (got_frame) {
-        if (ret < 0) {
+            mfxFrameSurface1 *surf = (mfxFrameSurface1*)frame->data[3];
-            fprintf(stderr, "Error transferring the data to system memory\n");
+            VASurfaceID    surface = *(VASurfaceID*)surf->Data.MemId;
            goto fail;
        }
-        for (i = 0; i < FF_ARRAY_ELEMS(sw_frame->data) && sw_frame->data[i]; i++)
+            VAImageFormat img_fmt = {
-            for (j = 0; j < (sw_frame->height >> (i > 0)); j++)
+                .fourcc         = VA_FOURCC_NV12,
-                avio_write(output_ctx, sw_frame->data[i] + j * sw_frame->linesize[i], sw_frame->width);
+                .byte_order     = VA_LSB_FIRST,
                .bits_per_pixel = 8,
                .depth          = 8,
            };
            VAImage img;
            VAStatus err;
            uint8_t *data;
            int i, j;
            img.buf      = VA_INVALID_ID;
            img.image_id = VA_INVALID_ID;
            err = vaCreateImage(decode->va_dpy, &img_fmt,
                                frame->width, frame->height, &img);
            if (err != VA_STATUS_SUCCESS) {
                fprintf(stderr, "Error creating an image: %s\n",
                        vaErrorStr(err));
                ret = AVERROR_UNKNOWN;
                goto fail;
            }
            err = vaGetImage(decode->va_dpy, surface, 0, 0,
                             frame->width, frame->height,
                             img.image_id);
            if (err != VA_STATUS_SUCCESS) {
                fprintf(stderr, "Error getting an image: %s\n",
                        vaErrorStr(err));
                ret = AVERROR_UNKNOWN;
                goto fail;
            }
            err = vaMapBuffer(decode->va_dpy, img.buf, (void**)&data);
            if (err != VA_STATUS_SUCCESS) {
                fprintf(stderr, "Error mapping the image buffer: %s\n",
                        vaErrorStr(err));
                ret = AVERROR_UNKNOWN;
                goto fail;
            }
            for (i = 0; i < img.num_planes; i++)
                for (j = 0; j < (img.height >> (i > 0)); j++)
                    avio_write(output_ctx, data + img.offsets[i] + j * img.pitches[i], img.width);
 fail:
-        av_frame_unref(sw_frame);
+            if (img.buf != VA_INVALID_ID)
-        av_frame_unref(frame);
+                vaUnmapBuffer(decode->va_dpy, img.buf);
            if (img.image_id != VA_INVALID_ID)
                vaDestroyImage(decode->va_dpy, img.image_id);
            av_frame_unref(frame);
-        if (ret < 0)
+            if (ret < 0)
-            return ret;
+                return ret;
        }
    }
    return 0;
@@ -113,14 +310,31 @@ int main(int argc, char **argv)
    AVCodecContext *decoder_ctx = NULL;
    const AVCodec *decoder;
-    AVPacket *pkt = NULL;
+    AVPacket pkt = { 0 };
-    AVFrame *frame = NULL, *sw_frame = NULL;
+    AVFrame *frame = NULL;
    DecodeContext decode = { NULL };
    Display *dpy = NULL;
    int va_ver_major, va_ver_minor;
    mfxIMPL mfx_impl = MFX_IMPL_AUTO_ANY;
    mfxVersion mfx_ver = { { 1, 1 } };
    mfxFrameAllocator frame_allocator = {
        .pthis = &decode,
        .Alloc = frame_alloc,
        .Lock  = frame_lock,
        .Unlock = frame_unlock,
        .GetHDL = frame_get_hdl,
        .Free   = frame_free,
    };
    AVIOContext *output_ctx = NULL;
-    int ret, i;
+    int ret, i, err;
-    AVBufferRef *device_ref = NULL;
+    av_register_all();
    if (argc < 3) {
        fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
@@ -148,13 +362,34 @@ int main(int argc, char **argv)
        goto finish;
    }
-    /* open the hardware device */
+    /* initialize VA-API */
-    ret = av_hwdevice_ctx_create(&device_ref, AV_HWDEVICE_TYPE_QSV,
+    dpy = XOpenDisplay(NULL);
-                                 "auto", NULL, 0);
+    if (!dpy) {
-    if (ret < 0) {
+        fprintf(stderr, "Cannot open the X display\n");
        fprintf(stderr, "Cannot open the hardware device\n");
        goto finish;
    }
    decode.va_dpy = vaGetDisplay(dpy);
    if (!decode.va_dpy) {
        fprintf(stderr, "Cannot open the VA display\n");
        goto finish;
    }
    err = vaInitialize(decode.va_dpy, &va_ver_major, &va_ver_minor);
    if (err != VA_STATUS_SUCCESS) {
        fprintf(stderr, "Cannot initialize VA: %s\n", vaErrorStr(err));
        goto finish;
    }
    fprintf(stderr, "Initialized VA v%d.%d\n", va_ver_major, va_ver_minor);
    /* initialize an MFX session */
    err = MFXInit(mfx_impl, &mfx_ver, &decode.mfx_session);
    if (err != MFX_ERR_NONE) {
        fprintf(stderr, "Error initializing an MFX session\n");
        goto finish;
    }
    MFXVideoCORE_SetHandle(decode.mfx_session, MFX_HANDLE_VA_DISPLAY, decode.va_dpy);
    MFXVideoCORE_SetFrameAllocator(decode.mfx_session, &frame_allocator);
    /* initialize the decoder */
    decoder = avcodec_find_decoder_by_name("h264_qsv");
@@ -180,9 +415,10 @@ int main(int argc, char **argv)
               video_st->codecpar->extradata_size);
        decoder_ctx->extradata_size = video_st->codecpar->extradata_size;
    }
    decoder_ctx->refcounted_frames = 1;
-
+    decoder_ctx->opaque      = &decode;
-    decoder_ctx->hw_device_ctx = av_buffer_ref(device_ref);
+    decoder_ctx->get_buffer2 = get_buffer;
    decoder_ctx->get_format  = get_format;
    ret = avcodec_open2(decoder_ctx, NULL, NULL);
@@ -198,28 +434,28 @@ int main(int argc, char **argv)
        goto finish;
    }
-    frame    = av_frame_alloc();
+    frame = av_frame_alloc();
-    sw_frame = av_frame_alloc();
+    if (!frame) {
    pkt      = av_packet_alloc();
    if (!frame || !sw_frame || !pkt) {
        ret = AVERROR(ENOMEM);
        goto finish;
    }
    /* actual decoding */
    while (ret >= 0) {
-        ret = av_read_frame(input_ctx, pkt);
+        ret = av_read_frame(input_ctx, &pkt);
        if (ret < 0)
            break;
-        if (pkt->stream_index == video_st->index)
+        if (pkt.stream_index == video_st->index)
-            ret = decode_packet(decoder_ctx, frame, sw_frame, pkt, output_ctx);
+            ret = decode_packet(&decode, decoder_ctx, frame, &pkt, output_ctx);
-        av_packet_unref(pkt);
+        av_packet_unref(&pkt);
    }
    /* flush the decoder */
-    ret = decode_packet(decoder_ctx, frame, sw_frame, NULL, output_ctx);
+    pkt.data = NULL;
    pkt.size = 0;
    ret = decode_packet(&decode, decoder_ctx, frame, &pkt, output_ctx);
 finish:
    if (ret < 0) {
@@ -231,12 +467,19 @@ finish:
    avformat_close_input(&input_ctx);
    av_frame_free(&frame);
    av_frame_free(&sw_frame);
    av_packet_free(&pkt);
    if (decoder_ctx)
        av_freep(&decoder_ctx->hwaccel_context);
    avcodec_free_context(&decoder_ctx);
-    av_buffer_unref(&device_ref);
+    free_surfaces(&decode);
    if (decode.mfx_session)
        MFXClose(decode.mfx_session);
    if (decode.va_dpy)
        vaTerminate(decode.va_dpy);
    if (dpy)
        XCloseDisplay(dpy);
    avio_close(output_ctx);
--- a/doc/examples/remuxing.c
+++ b/doc/examples/remuxing.c
@@ -45,14 +45,11 @@ static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt, cons
 int main(int argc, char **argv)
 {
-    const AVOutputFormat *ofmt = NULL;
+    AVOutputFormat *ofmt = NULL;
    AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
-    AVPacket *pkt = NULL;
+    AVPacket pkt;
    const char *in_filename, *out_filename;
    int ret, i;
    int stream_index = 0;
    int *stream_mapping = NULL;
    int stream_mapping_size = 0;
    if (argc < 3) {
        printf("usage: %s input output\n"
@@ -65,11 +62,7 @@ int main(int argc, char **argv)
    in_filename  = argv[1];
    out_filename = argv[2];
-    pkt = av_packet_alloc();
+    av_register_all();
    if (!pkt) {
        fprintf(stderr, "Could not allocate AVPacket\n");
        return 1;
    }
    if ((ret = avformat_open_input(&ifmt_ctx, in_filename, 0, 0)) < 0) {
        fprintf(stderr, "Could not open input file '%s'", in_filename);
@@ -90,42 +83,25 @@ int main(int argc, char **argv)
        goto end;
    }
    stream_mapping_size = ifmt_ctx->nb_streams;
    stream_mapping = av_calloc(stream_mapping_size, sizeof(*stream_mapping));
    if (!stream_mapping) {
        ret = AVERROR(ENOMEM);
        goto end;
    }
    ofmt = ofmt_ctx->oformat;
    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
        AVStream *out_stream;
        AVStream *in_stream = ifmt_ctx->streams[i];
-        AVCodecParameters *in_codecpar = in_stream->codecpar;
+        AVStream *out_stream = avformat_new_stream(ofmt_ctx, in_stream->codec->codec);
        if (in_codecpar->codec_type != AVMEDIA_TYPE_AUDIO &&
            in_codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
            in_codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
            stream_mapping[i] = -1;
            continue;
        }
        stream_mapping[i] = stream_index++;
        out_stream = avformat_new_stream(ofmt_ctx, NULL);
        if (!out_stream) {
            fprintf(stderr, "Failed allocating output stream\n");
            ret = AVERROR_UNKNOWN;
            goto end;
        }
-        ret = avcodec_parameters_copy(out_stream->codecpar, in_codecpar);
+        ret = avcodec_copy_context(out_stream->codec, in_stream->codec);
        if (ret < 0) {
-            fprintf(stderr, "Failed to copy codec parameters\n");
+            fprintf(stderr, "Failed to copy context from input to output stream codec context\n");
            goto end;
        }
-        out_stream->codecpar->codec_tag = 0;
+        out_stream->codec->codec_tag = 0;
        if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
            out_stream->codec->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
    }
    av_dump_format(ofmt_ctx, 0, out_filename, 1);
@@ -146,39 +122,32 @@ int main(int argc, char **argv)
    while (1) {
        AVStream *in_stream, *out_stream;
-        ret = av_read_frame(ifmt_ctx, pkt);
+        ret = av_read_frame(ifmt_ctx, &pkt);
        if (ret < 0)
            break;
-        in_stream  = ifmt_ctx->streams[pkt->stream_index];
+        in_stream  = ifmt_ctx->streams[pkt.stream_index];
-        if (pkt->stream_index >= stream_mapping_size ||
+        out_stream = ofmt_ctx->streams[pkt.stream_index];
            stream_mapping[pkt->stream_index] < 0) {
            av_packet_unref(pkt);
            continue;
        }
-        pkt->stream_index = stream_mapping[pkt->stream_index];
+        log_packet(ifmt_ctx, &pkt, "in");
        out_stream = ofmt_ctx->streams[pkt->stream_index];
        log_packet(ifmt_ctx, pkt, "in");
        /* copy packet */
-        av_packet_rescale_ts(pkt, in_stream->time_base, out_stream->time_base);
+        pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
-        pkt->pos = -1;
+        pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
-        log_packet(ofmt_ctx, pkt, "out");
+        pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
        pkt.pos = -1;
        log_packet(ofmt_ctx, &pkt, "out");
-        ret = av_interleaved_write_frame(ofmt_ctx, pkt);
+        ret = av_interleaved_write_frame(ofmt_ctx, &pkt);
        /* pkt is now blank (av_interleaved_write_frame() takes ownership of
         * its contents and resets pkt), so that no unreferencing is necessary.
         * This would be different if one used av_write_frame(). */
        if (ret < 0) {
            fprintf(stderr, "Error muxing packet\n");
            break;
        }
        av_packet_unref(&pkt);
    }
    av_write_trailer(ofmt_ctx);
 end:
    av_packet_free(&pkt);
    avformat_close_input(&ifmt_ctx);
@@ -187,8 +156,6 @@ end:
        avio_closep(&ofmt_ctx->pb);
    avformat_free_context(ofmt_ctx);
    av_freep(&stream_mapping);
    if (ret < 0 && ret != AVERROR_EOF) {
        fprintf(stderr, "Error occurred: %s\n", av_err2str(ret));
        return 1;
--- a/doc/examples/transcode_aac.c
+++ b/doc/examples/transcode_aac.c
@@ -1,6 +1,4 @@
 /*
 * Copyright (c) 2013-2018 Andreas Unterweger
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
@@ -10,7 +8,7 @@
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
@@ -20,11 +18,10 @@
 /**
 * @file
- * Simple audio converter
+ * simple audio converter
 *
 * @example transcode_aac.c
 * Convert an input audio file to AAC in an MP4 container using FFmpeg.
 * Formats other than MP4 are supported based on the output file extension.
 * @author Andreas Unterweger (dustsigns@gmail.com)
 */
@@ -38,50 +35,55 @@
 #include "libavutil/audio_fifo.h"
 #include "libavutil/avassert.h"
 #include "libavutil/avstring.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/frame.h"
 #include "libavutil/opt.h"
 #include "libswresample/swresample.h"
-/* The output bit rate in bit/s */
+/** The output bit rate in kbit/s */
 #define OUTPUT_BIT_RATE 96000
-/* The number of output channels */
+/** The number of output channels */
 #define OUTPUT_CHANNELS 2
 /**
- * Open an input file and the required decoder.
+ * Convert an error code into a text message.
- * @param      filename             File to be opened
+ * @param error Error code to be converted
- * @param[out] input_format_context Format context of opened file
+ * @return Corresponding error text (not thread-safe)
 * @param[out] input_codec_context  Codec context of opened file
 * @return Error code (0 if successful)
 */
 static const char *get_error_text(const int error)
 {
    static char error_buffer[255];
    av_strerror(error, error_buffer, sizeof(error_buffer));
    return error_buffer;
 }
 /** Open an input file and the required decoder. */
 static int open_input_file(const char *filename,
                           AVFormatContext **input_format_context,
                           AVCodecContext **input_codec_context)
 {
    AVCodecContext *avctx;
-    const AVCodec *input_codec;
+    AVCodec *input_codec;
    int error;
-    /* Open the input file to read from it. */
+    /** Open the input file to read from it. */
    if ((error = avformat_open_input(input_format_context, filename, NULL,
                                     NULL)) < 0) {
        fprintf(stderr, "Could not open input file '%s' (error '%s')\n",
-                filename, av_err2str(error));
+                filename, get_error_text(error));
        *input_format_context = NULL;
        return error;
    }
-    /* Get information on the input file (number of streams etc.). */
+    /** Get information on the input file (number of streams etc.). */
    if ((error = avformat_find_stream_info(*input_format_context, NULL)) < 0) {
        fprintf(stderr, "Could not open find stream info (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        avformat_close_input(input_format_context);
        return error;
    }
-    /* Make sure that there is only one stream in the input file. */
+    /** Make sure that there is only one stream in the input file. */
    if ((*input_format_context)->nb_streams != 1) {
        fprintf(stderr, "Expected one audio input stream, but found %d\n",
                (*input_format_context)->nb_streams);
@@ -89,14 +91,14 @@ static int open_input_file(const char *filename,
        return AVERROR_EXIT;
    }
-    /* Find a decoder for the audio stream. */
+    /** Find a decoder for the audio stream. */
    if (!(input_codec = avcodec_find_decoder((*input_format_context)->streams[0]->codecpar->codec_id))) {
        fprintf(stderr, "Could not find input codec\n");
        avformat_close_input(input_format_context);
        return AVERROR_EXIT;
    }
-    /* Allocate a new decoding context. */
+    /** allocate a new decoding context */
    avctx = avcodec_alloc_context3(input_codec);
    if (!avctx) {
        fprintf(stderr, "Could not allocate a decoding context\n");
@@ -104,7 +106,7 @@ static int open_input_file(const char *filename,
        return AVERROR(ENOMEM);
    }
-    /* Initialize the stream parameters with demuxer information. */
+    /** initialize the stream parameters with demuxer information */
    error = avcodec_parameters_to_context(avctx, (*input_format_context)->streams[0]->codecpar);
    if (error < 0) {
        avformat_close_input(input_format_context);
@@ -112,16 +114,16 @@ static int open_input_file(const char *filename,
        return error;
    }
-    /* Open the decoder for the audio stream to use it later. */
+    /** Open the decoder for the audio stream to use it later. */
    if ((error = avcodec_open2(avctx, input_codec, NULL)) < 0) {
        fprintf(stderr, "Could not open input codec (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        avcodec_free_context(&avctx);
        avformat_close_input(input_format_context);
        return error;
    }
-    /* Save the decoder context for easier access later. */
+    /** Save the decoder context for easier access later. */
    *input_codec_context = avctx;
    return 0;
@@ -131,11 +133,6 @@ static int open_input_file(const char *filename,
 * Open an output file and the required encoder.
 * Also set some basic encoder parameters.
 * Some of these parameters are based on the input file's parameters.
 * @param      filename              File to be opened
 * @param      input_codec_context   Codec context of input file
 * @param[out] output_format_context Format context of output file
 * @param[out] output_codec_context  Codec context of output file
 * @return Error code (0 if successful)
 */
 static int open_output_file(const char *filename,
                            AVCodecContext *input_codec_context,
@@ -145,46 +142,43 @@ static int open_output_file(const char *filename,
    AVCodecContext *avctx          = NULL;
    AVIOContext *output_io_context = NULL;
    AVStream *stream               = NULL;
-    const AVCodec *output_codec    = NULL;
+    AVCodec *output_codec          = NULL;
    int error;
-    /* Open the output file to write to it. */
+    /** Open the output file to write to it. */
    if ((error = avio_open(&output_io_context, filename,
                           AVIO_FLAG_WRITE)) < 0) {
        fprintf(stderr, "Could not open output file '%s' (error '%s')\n",
-                filename, av_err2str(error));
+                filename, get_error_text(error));
        return error;
    }
-    /* Create a new format context for the output container format. */
+    /** Create a new format context for the output container format. */
    if (!(*output_format_context = avformat_alloc_context())) {
        fprintf(stderr, "Could not allocate output format context\n");
        return AVERROR(ENOMEM);
    }
-    /* Associate the output file (pointer) with the container format context. */
+    /** Associate the output file (pointer) with the container format context. */
    (*output_format_context)->pb = output_io_context;
-    /* Guess the desired container format based on the file extension. */
+    /** Guess the desired container format based on the file extension. */
    if (!((*output_format_context)->oformat = av_guess_format(NULL, filename,
                                                              NULL))) {
        fprintf(stderr, "Could not find output file format\n");
        goto cleanup;
    }
-    if (!((*output_format_context)->url = av_strdup(filename))) {
+    av_strlcpy((*output_format_context)->filename, filename,
-        fprintf(stderr, "Could not allocate url.\n");
+               sizeof((*output_format_context)->filename));
        error = AVERROR(ENOMEM);
        goto cleanup;
    }
-    /* Find the encoder to be used by its name. */
+    /** Find the encoder to be used by its name. */
    if (!(output_codec = avcodec_find_encoder(AV_CODEC_ID_AAC))) {
        fprintf(stderr, "Could not find an AAC encoder.\n");
        goto cleanup;
    }
-    /* Create a new audio stream in the output file container. */
+    /** Create a new audio stream in the output file container. */
    if (!(stream = avformat_new_stream(*output_format_context, NULL))) {
        fprintf(stderr, "Could not create new stream\n");
        error = AVERROR(ENOMEM);
@@ -198,30 +192,34 @@ static int open_output_file(const char *filename,
        goto cleanup;
    }
-    /* Set the basic encoder parameters.
+    /**
-     * The input file's sample rate is used to avoid a sample rate conversion. */
+     * Set the basic encoder parameters.
     * The input file's sample rate is used to avoid a sample rate conversion.
     */
    avctx->channels       = OUTPUT_CHANNELS;
    avctx->channel_layout = av_get_default_channel_layout(OUTPUT_CHANNELS);
    avctx->sample_rate    = input_codec_context->sample_rate;
    avctx->sample_fmt     = output_codec->sample_fmts[0];
    avctx->bit_rate       = OUTPUT_BIT_RATE;
-    /* Allow the use of the experimental AAC encoder. */
+    /** Allow the use of the experimental AAC encoder */
    avctx->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
-    /* Set the sample rate for the container. */
+    /** Set the sample rate for the container. */
    stream->time_base.den = input_codec_context->sample_rate;
    stream->time_base.num = 1;
-    /* Some container formats (like MP4) require global headers to be present.
+    /**
-     * Mark the encoder so that it behaves accordingly. */
+     * Some container formats (like MP4) require global headers to be present
     * Mark the encoder so that it behaves accordingly.
     */
    if ((*output_format_context)->oformat->flags & AVFMT_GLOBALHEADER)
        avctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
-    /* Open the encoder for the audio stream to use it later. */
+    /** Open the encoder for the audio stream to use it later. */
    if ((error = avcodec_open2(avctx, output_codec, NULL)) < 0) {
        fprintf(stderr, "Could not open output codec (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        goto cleanup;
    }
@@ -231,7 +229,7 @@ static int open_output_file(const char *filename,
        goto cleanup;
    }
-    /* Save the encoder context for easier access later. */
+    /** Save the encoder context for easier access later. */
    *output_codec_context = avctx;
    return 0;
@@ -244,25 +242,16 @@ cleanup:
    return error < 0 ? error : AVERROR_EXIT;
 }
-/**
+/** Initialize one data packet for reading or writing. */
- * Initialize one data packet for reading or writing.
+static void init_packet(AVPacket *packet)
 * @param[out] packet Packet to be initialized
 * @return Error code (0 if successful)
 */
 static int init_packet(AVPacket **packet)
 {
-    if (!(*packet = av_packet_alloc())) {
+    av_init_packet(packet);
-        fprintf(stderr, "Could not allocate packet\n");
+    /** Set the packet data and size so that it is recognized as being empty. */
-        return AVERROR(ENOMEM);
+    packet->data = NULL;
-    }
+    packet->size = 0;
    return 0;
 }
-/**
+/** Initialize one audio frame for reading from the input file */
 * Initialize one audio frame for reading from the input file.
 * @param[out] frame Frame to be initialized
 * @return Error code (0 if successful)
 */
 static int init_input_frame(AVFrame **frame)
 {
    if (!(*frame = av_frame_alloc())) {
@@ -276,10 +265,6 @@ static int init_input_frame(AVFrame **frame)
 * Initialize the audio resampler based on the input and output codec settings.
 * If the input and output sample formats differ, a conversion is required
 * libswresample takes care of this, but requires initialization.
 * @param      input_codec_context  Codec context of the input file
 * @param      output_codec_context Codec context of the output file
 * @param[out] resample_context     Resample context for the required conversion
 * @return Error code (0 if successful)
 */
 static int init_resampler(AVCodecContext *input_codec_context,
                          AVCodecContext *output_codec_context,
@@ -287,7 +272,7 @@ static int init_resampler(AVCodecContext *input_codec_context,
 {
        int error;
-        /*
+        /**
         * Create a resampler context for the conversion.
         * Set the conversion parameters.
         * Default channel layouts based on the number of channels
@@ -306,14 +291,14 @@ static int init_resampler(AVCodecContext *input_codec_context,
            fprintf(stderr, "Could not allocate resample context\n");
            return AVERROR(ENOMEM);
        }
-        /*
+        /**
        * Perform a sanity check so that the number of converted samples is
        * not greater than the number of samples to be converted.
        * If the sample rates differ, this case has to be handled differently
        */
        av_assert0(output_codec_context->sample_rate == input_codec_context->sample_rate);
-        /* Open the resampler with the specified parameters. */
+        /** Open the resampler with the specified parameters. */
        if ((error = swr_init(*resample_context)) < 0) {
            fprintf(stderr, "Could not open resample context\n");
            swr_free(resample_context);
@@ -322,15 +307,10 @@ static int init_resampler(AVCodecContext *input_codec_context,
    return 0;
 }
-/**
+/** Initialize a FIFO buffer for the audio samples to be encoded. */
 * Initialize a FIFO buffer for the audio samples to be encoded.
 * @param[out] fifo                 Sample buffer
 * @param      output_codec_context Codec context of the output file
 * @return Error code (0 if successful)
 */
 static int init_fifo(AVAudioFifo **fifo, AVCodecContext *output_codec_context)
 {
-    /* Create the FIFO buffer based on the specified output sample format. */
+    /** Create the FIFO buffer based on the specified output sample format. */
    if (!(*fifo = av_audio_fifo_alloc(output_codec_context->sample_fmt,
                                      output_codec_context->channels, 1))) {
        fprintf(stderr, "Could not allocate FIFO\n");
@@ -339,106 +319,69 @@ static int init_fifo(AVAudioFifo **fifo, AVCodecContext *output_codec_context)
    return 0;
 }
-/**
+/** Write the header of the output file container. */
 * Write the header of the output file container.
 * @param output_format_context Format context of the output file
 * @return Error code (0 if successful)
 */
 static int write_output_file_header(AVFormatContext *output_format_context)
 {
    int error;
    if ((error = avformat_write_header(output_format_context, NULL)) < 0) {
        fprintf(stderr, "Could not write output file header (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        return error;
    }
    return 0;
 }
-/**
+/** Decode one audio frame from the input file. */
 * Decode one audio frame from the input file.
 * @param      frame                Audio frame to be decoded
 * @param      input_format_context Format context of the input file
 * @param      input_codec_context  Codec context of the input file
 * @param[out] data_present         Indicates whether data has been decoded
 * @param[out] finished             Indicates whether the end of file has
 *                                  been reached and all data has been
 *                                  decoded. If this flag is false, there
 *                                  is more data to be decoded, i.e., this
 *                                  function has to be called again.
 * @return Error code (0 if successful)
 */
 static int decode_audio_frame(AVFrame *frame,
                              AVFormatContext *input_format_context,
                              AVCodecContext *input_codec_context,
                              int *data_present, int *finished)
 {
-    /* Packet used for temporary storage. */
+    /** Packet used for temporary storage. */
-    AVPacket *input_packet;
+    AVPacket input_packet;
    int error;
    init_packet(&input_packet);
-    error = init_packet(&input_packet);
+    /** Read one audio frame from the input file into a temporary packet. */
-    if (error < 0)
+    if ((error = av_read_frame(input_format_context, &input_packet)) < 0) {
-        return error;
+        /** If we are at the end of the file, flush the decoder below. */
    /* Read one audio frame from the input file into a temporary packet. */
    if ((error = av_read_frame(input_format_context, input_packet)) < 0) {
        /* If we are at the end of the file, flush the decoder below. */
        if (error == AVERROR_EOF)
            *finished = 1;
        else {
            fprintf(stderr, "Could not read frame (error '%s')\n",
-                    av_err2str(error));
+                    get_error_text(error));
-            goto cleanup;
+            return error;
        }
    }
-    /* Send the audio frame stored in the temporary packet to the decoder.
+    /**
-     * The input audio stream decoder is used to do this. */
+     * Decode the audio frame stored in the temporary packet.
-    if ((error = avcodec_send_packet(input_codec_context, input_packet)) < 0) {
+     * The input audio stream decoder is used to do this.
-        fprintf(stderr, "Could not send packet for decoding (error '%s')\n",
+     * If we are at the end of the file, pass an empty packet to the decoder
-                av_err2str(error));
+     * to flush it.
-        goto cleanup;
+     */
-    }
+    if ((error = avcodec_decode_audio4(input_codec_context, frame,
-
+                                       data_present, &input_packet)) < 0) {
    /* Receive one frame from the decoder. */
    error = avcodec_receive_frame(input_codec_context, frame);
    /* If the decoder asks for more data to be able to decode a frame,
     * return indicating that no data is present. */
    if (error == AVERROR(EAGAIN)) {
        error = 0;
        goto cleanup;
    /* If the end of the input file is reached, stop decoding. */
    } else if (error == AVERROR_EOF) {
        *finished = 1;
        error = 0;
        goto cleanup;
    } else if (error < 0) {
        fprintf(stderr, "Could not decode frame (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
-        goto cleanup;
+        av_packet_unref(&input_packet);
-    /* Default case: Return decoded data. */
+        return error;
    } else {
        *data_present = 1;
        goto cleanup;
    }
-cleanup:
+    /**
-    av_packet_free(&input_packet);
+     * If the decoder has not been flushed completely, we are not finished,
-    return error;
+     * so that this function has to be called again.
     */
    if (*finished && *data_present)
        *finished = 0;
    av_packet_unref(&input_packet);
    return 0;
 }
 /**
 * Initialize a temporary storage for the specified number of audio samples.
 * The conversion requires temporary storage due to the different format.
 * The number of audio samples to be allocated is specified in frame_size.
 * @param[out] converted_input_samples Array of converted samples. The
 *                                     dimensions are reference, channel
 *                                     (for multi-channel audio), sample.
 * @param      output_codec_context    Codec context of the output file
 * @param      frame_size              Number of samples to be converted in
 *                                     each round
 * @return Error code (0 if successful)
 */
 static int init_converted_samples(uint8_t ***converted_input_samples,
                                  AVCodecContext *output_codec_context,
@@ -446,7 +389,8 @@ static int init_converted_samples(uint8_t ***converted_input_samples,
 {
    int error;
-    /* Allocate as many pointers as there are audio channels.
+    /**
     * Allocate as many pointers as there are audio channels.
     * Each pointer will later point to the audio samples of the corresponding
     * channels (although it may be NULL for interleaved formats).
     */
@@ -456,15 +400,17 @@ static int init_converted_samples(uint8_t ***converted_input_samples,
        return AVERROR(ENOMEM);
    }
-    /* Allocate memory for the samples of all channels in one consecutive
+    /**
-     * block for convenience. */
+     * Allocate memory for the samples of all channels in one consecutive
     * block for convenience.
     */
    if ((error = av_samples_alloc(*converted_input_samples, NULL,
                                  output_codec_context->channels,
                                  frame_size,
                                  output_codec_context->sample_fmt, 0)) < 0) {
        fprintf(stderr,
                "Could not allocate converted input samples (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        av_freep(&(*converted_input_samples)[0]);
        free(*converted_input_samples);
        return error;
@@ -474,15 +420,8 @@ static int init_converted_samples(uint8_t ***converted_input_samples,
 /**
 * Convert the input audio samples into the output sample format.
- * The conversion happens on a per-frame basis, the size of which is
+ * The conversion happens on a per-frame basis, the size of which is specified
- * specified by frame_size.
+ * by frame_size.
 * @param      input_data       Samples to be decoded. The dimensions are
 *                              channel (for multi-channel audio), sample.
 * @param[out] converted_data   Converted samples. The dimensions are channel
 *                              (for multi-channel audio), sample.
 * @param      frame_size       Number of samples to be converted
 * @param      resample_context Resample context for the conversion
 * @return Error code (0 if successful)
 */
 static int convert_samples(const uint8_t **input_data,
                           uint8_t **converted_data, const int frame_size,
@@ -490,40 +429,35 @@ static int convert_samples(const uint8_t **input_data,
 {
    int error;
-    /* Convert the samples using the resampler. */
+    /** Convert the samples using the resampler. */
    if ((error = swr_convert(resample_context,
                             converted_data, frame_size,
                             input_data    , frame_size)) < 0) {
        fprintf(stderr, "Could not convert input samples (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        return error;
    }
    return 0;
 }
-/**
+/** Add converted input audio samples to the FIFO buffer for later processing. */
 * Add converted input audio samples to the FIFO buffer for later processing.
 * @param fifo                    Buffer to add the samples to
 * @param converted_input_samples Samples to be added. The dimensions are channel
 *                                (for multi-channel audio), sample.
 * @param frame_size              Number of samples to be converted
 * @return Error code (0 if successful)
 */
 static int add_samples_to_fifo(AVAudioFifo *fifo,
                               uint8_t **converted_input_samples,
                               const int frame_size)
 {
    int error;
-    /* Make the FIFO as large as it needs to be to hold both,
+    /**
-     * the old and the new samples. */
+     * Make the FIFO as large as it needs to be to hold both,
     * the old and the new samples.
     */
    if ((error = av_audio_fifo_realloc(fifo, av_audio_fifo_size(fifo) + frame_size)) < 0) {
        fprintf(stderr, "Could not reallocate FIFO\n");
        return error;
    }
-    /* Store the new samples in the FIFO buffer. */
+    /** Store the new samples in the FIFO buffer. */
    if (av_audio_fifo_write(fifo, (void **)converted_input_samples,
                            frame_size) < frame_size) {
        fprintf(stderr, "Could not write data to FIFO\n");
@@ -533,20 +467,8 @@ static int add_samples_to_fifo(AVAudioFifo *fifo,
 }
 /**
- * Read one audio frame from the input file, decode, convert and store
+ * Read one audio frame from the input file, decodes, converts and stores
 * it in the FIFO buffer.
 * @param      fifo                 Buffer used for temporary storage
 * @param      input_format_context Format context of the input file
 * @param      input_codec_context  Codec context of the input file
 * @param      output_codec_context Codec context of the output file
 * @param      resampler_context    Resample context for the conversion
 * @param[out] finished             Indicates whether the end of file has
 *                                  been reached and all data has been
 *                                  decoded. If this flag is false,
 *                                  there is more data to be decoded,
 *                                  i.e., this function has to be called
 *                                  again.
 * @return Error code (0 if successful)
 */
 static int read_decode_convert_and_store(AVAudioFifo *fifo,
                                         AVFormatContext *input_format_context,
@@ -555,41 +477,45 @@ static int read_decode_convert_and_store(AVAudioFifo *fifo,
                                         SwrContext *resampler_context,
                                         int *finished)
 {
-    /* Temporary storage of the input samples of the frame read from the file. */
+    /** Temporary storage of the input samples of the frame read from the file. */
    AVFrame *input_frame = NULL;
-    /* Temporary storage for the converted input samples. */
+    /** Temporary storage for the converted input samples. */
    uint8_t **converted_input_samples = NULL;
-    int data_present = 0;
+    int data_present;
    int ret = AVERROR_EXIT;
-    /* Initialize temporary storage for one input frame. */
+    /** Initialize temporary storage for one input frame. */
    if (init_input_frame(&input_frame))
        goto cleanup;
-    /* Decode one frame worth of audio samples. */
+    /** Decode one frame worth of audio samples. */
    if (decode_audio_frame(input_frame, input_format_context,
                           input_codec_context, &data_present, finished))
        goto cleanup;
-    /* If we are at the end of the file and there are no more samples
+    /**
     * If we are at the end of the file and there are no more samples
     * in the decoder which are delayed, we are actually finished.
-     * This must not be treated as an error. */
+     * This must not be treated as an error.
-    if (*finished) {
+     */
    if (*finished && !data_present) {
        ret = 0;
        goto cleanup;
    }
-    /* If there is decoded data, convert and store it. */
+    /** If there is decoded data, convert and store it */
    if (data_present) {
-        /* Initialize the temporary storage for the converted input samples. */
+        /** Initialize the temporary storage for the converted input samples. */
        if (init_converted_samples(&converted_input_samples, output_codec_context,
                                   input_frame->nb_samples))
            goto cleanup;
-        /* Convert the input samples to the desired output sample format.
+        /**
-         * This requires a temporary storage provided by converted_input_samples. */
+         * Convert the input samples to the desired output sample format.
         * This requires a temporary storage provided by converted_input_samples.
         */
        if (convert_samples((const uint8_t**)input_frame->extended_data, converted_input_samples,
                            input_frame->nb_samples, resampler_context))
            goto cleanup;
-        /* Add the converted input samples to the FIFO buffer for later processing. */
+        /** Add the converted input samples to the FIFO buffer for later processing. */
        if (add_samples_to_fifo(fifo, converted_input_samples,
                                input_frame->nb_samples))
            goto cleanup;
@@ -610,10 +536,6 @@ cleanup:
 /**
 * Initialize one input frame for writing to the output file.
 * The frame will be exactly frame_size samples large.
 * @param[out] frame                Frame to be initialized
 * @param      output_codec_context Codec context of the output file
 * @param      frame_size           Size of the frame
 * @return Error code (0 if successful)
 */
 static int init_output_frame(AVFrame **frame,
                             AVCodecContext *output_codec_context,
@@ -621,27 +543,31 @@ static int init_output_frame(AVFrame **frame,
 {
    int error;
-    /* Create a new frame to store the audio samples. */
+    /** Create a new frame to store the audio samples. */
    if (!(*frame = av_frame_alloc())) {
        fprintf(stderr, "Could not allocate output frame\n");
        return AVERROR_EXIT;
    }
-    /* Set the frame's parameters, especially its size and format.
+    /**
     * Set the frame's parameters, especially its size and format.
     * av_frame_get_buffer needs this to allocate memory for the
     * audio samples of the frame.
     * Default channel layouts based on the number of channels
-     * are assumed for simplicity. */
+     * are assumed for simplicity.
     */
    (*frame)->nb_samples     = frame_size;
    (*frame)->channel_layout = output_codec_context->channel_layout;
    (*frame)->format         = output_codec_context->sample_fmt;
    (*frame)->sample_rate    = output_codec_context->sample_rate;
-    /* Allocate the samples of the created frame. This call will make
+    /**
-     * sure that the audio frame can hold as many samples as specified. */
+     * Allocate the samples of the created frame. This call will make
     * sure that the audio frame can hold as many samples as specified.
     */
    if ((error = av_frame_get_buffer(*frame, 0)) < 0) {
-        fprintf(stderr, "Could not allocate output frame samples (error '%s')\n",
+        fprintf(stderr, "Could allocate output frame samples (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        av_frame_free(frame);
        return error;
    }
@@ -649,117 +575,87 @@ static int init_output_frame(AVFrame **frame,
    return 0;
 }
-/* Global timestamp for the audio frames. */
+/** Global timestamp for the audio frames */
 static int64_t pts = 0;
-/**
+/** Encode one frame worth of audio to the output file. */
 * Encode one frame worth of audio to the output file.
 * @param      frame                 Samples to be encoded
 * @param      output_format_context Format context of the output file
 * @param      output_codec_context  Codec context of the output file
 * @param[out] data_present          Indicates whether data has been
 *                                   encoded
 * @return Error code (0 if successful)
 */
 static int encode_audio_frame(AVFrame *frame,
                              AVFormatContext *output_format_context,
                              AVCodecContext *output_codec_context,
                              int *data_present)
 {
-    /* Packet used for temporary storage. */
+    /** Packet used for temporary storage. */
-    AVPacket *output_packet;
+    AVPacket output_packet;
    int error;
    init_packet(&output_packet);
-    error = init_packet(&output_packet);
+    /** Set a timestamp based on the sample rate for the container. */
    if (error < 0)
        return error;
    /* Set a timestamp based on the sample rate for the container. */
    if (frame) {
        frame->pts = pts;
        pts += frame->nb_samples;
    }
-    /* Send the audio frame stored in the temporary packet to the encoder.
+    /**
-     * The output audio stream encoder is used to do this. */
+     * Encode the audio frame and store it in the temporary packet.
-    error = avcodec_send_frame(output_codec_context, frame);
+     * The output audio stream encoder is used to do this.
-    /* The encoder signals that it has nothing more to encode. */
+     */
-    if (error == AVERROR_EOF) {
+    if ((error = avcodec_encode_audio2(output_codec_context, &output_packet,
-        error = 0;
+                                       frame, data_present)) < 0) {
        goto cleanup;
    } else if (error < 0) {
        fprintf(stderr, "Could not send packet for encoding (error '%s')\n",
                av_err2str(error));
        goto cleanup;
    }
    /* Receive one encoded frame from the encoder. */
    error = avcodec_receive_packet(output_codec_context, output_packet);
    /* If the encoder asks for more data to be able to provide an
     * encoded frame, return indicating that no data is present. */
    if (error == AVERROR(EAGAIN)) {
        error = 0;
        goto cleanup;
    /* If the last frame has been encoded, stop encoding. */
    } else if (error == AVERROR_EOF) {
        error = 0;
        goto cleanup;
    } else if (error < 0) {
        fprintf(stderr, "Could not encode frame (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
-        goto cleanup;
+        av_packet_unref(&output_packet);
-    /* Default case: Return encoded data. */
+        return error;
    } else {
        *data_present = 1;
    }
-    /* Write one audio frame from the temporary packet to the output file. */
+    /** Write one audio frame from the temporary packet to the output file. */
-    if (*data_present &&
+    if (*data_present) {
-        (error = av_write_frame(output_format_context, output_packet)) < 0) {
+        if ((error = av_write_frame(output_format_context, &output_packet)) < 0) {
-        fprintf(stderr, "Could not write frame (error '%s')\n",
+            fprintf(stderr, "Could not write frame (error '%s')\n",
-                av_err2str(error));
+                    get_error_text(error));
-        goto cleanup;
+            av_packet_unref(&output_packet);
            return error;
        }
        av_packet_unref(&output_packet);
    }
-cleanup:
+    return 0;
    av_packet_free(&output_packet);
    return error;
 }
 /**
 * Load one audio frame from the FIFO buffer, encode and write it to the
 * output file.
 * @param fifo                  Buffer used for temporary storage
 * @param output_format_context Format context of the output file
 * @param output_codec_context  Codec context of the output file
 * @return Error code (0 if successful)
 */
 static int load_encode_and_write(AVAudioFifo *fifo,
                                 AVFormatContext *output_format_context,
                                 AVCodecContext *output_codec_context)
 {
-    /* Temporary storage of the output samples of the frame written to the file. */
+    /** Temporary storage of the output samples of the frame written to the file. */
    AVFrame *output_frame;
-    /* Use the maximum number of possible samples per frame.
+    /**
     * Use the maximum number of possible samples per frame.
     * If there is less than the maximum possible frame size in the FIFO
-     * buffer use this number. Otherwise, use the maximum possible frame size. */
+     * buffer use this number. Otherwise, use the maximum possible frame size
     */
    const int frame_size = FFMIN(av_audio_fifo_size(fifo),
                                 output_codec_context->frame_size);
    int data_written;
-    /* Initialize temporary storage for one output frame. */
+    /** Initialize temporary storage for one output frame. */
    if (init_output_frame(&output_frame, output_codec_context, frame_size))
        return AVERROR_EXIT;
-    /* Read as many samples from the FIFO buffer as required to fill the frame.
+    /**
-     * The samples are stored in the frame temporarily. */
+     * Read as many samples from the FIFO buffer as required to fill the frame.
     * The samples are stored in the frame temporarily.
     */
    if (av_audio_fifo_read(fifo, (void **)output_frame->data, frame_size) < frame_size) {
        fprintf(stderr, "Could not read data from FIFO\n");
        av_frame_free(&output_frame);
        return AVERROR_EXIT;
    }
-    /* Encode one frame worth of audio samples. */
+    /** Encode one frame worth of audio samples. */
    if (encode_audio_frame(output_frame, output_format_context,
                           output_codec_context, &data_written)) {
        av_frame_free(&output_frame);
@@ -769,22 +665,19 @@ static int load_encode_and_write(AVAudioFifo *fifo,
    return 0;
 }
-/**
+/** Write the trailer of the output file container. */
 * Write the trailer of the output file container.
 * @param output_format_context Format context of the output file
 * @return Error code (0 if successful)
 */
 static int write_output_file_trailer(AVFormatContext *output_format_context)
 {
    int error;
    if ((error = av_write_trailer(output_format_context)) < 0) {
        fprintf(stderr, "Could not write output file trailer (error '%s')\n",
-                av_err2str(error));
+                get_error_text(error));
        return error;
    }
    return 0;
 }
 /** Convert an audio file to an AAC file in an MP4 container. */
 int main(int argc, char **argv)
 {
    AVFormatContext *input_format_context = NULL, *output_format_context = NULL;
@@ -793,75 +686,90 @@ int main(int argc, char **argv)
    AVAudioFifo *fifo = NULL;
    int ret = AVERROR_EXIT;
-    if (argc != 3) {
+    if (argc < 3) {
        fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
        exit(1);
    }
-    /* Open the input file for reading. */
+    /** Register all codecs and formats so that they can be used. */
    av_register_all();
    /** Open the input file for reading. */
    if (open_input_file(argv[1], &input_format_context,
                        &input_codec_context))
        goto cleanup;
-    /* Open the output file for writing. */
+    /** Open the output file for writing. */
    if (open_output_file(argv[2], input_codec_context,
                         &output_format_context, &output_codec_context))
        goto cleanup;
-    /* Initialize the resampler to be able to convert audio sample formats. */
+    /** Initialize the resampler to be able to convert audio sample formats. */
    if (init_resampler(input_codec_context, output_codec_context,
                       &resample_context))
        goto cleanup;
-    /* Initialize the FIFO buffer to store audio samples to be encoded. */
+    /** Initialize the FIFO buffer to store audio samples to be encoded. */
    if (init_fifo(&fifo, output_codec_context))
        goto cleanup;
-    /* Write the header of the output file container. */
+    /** Write the header of the output file container. */
    if (write_output_file_header(output_format_context))
        goto cleanup;
-    /* Loop as long as we have input samples to read or output samples
+    /**
-     * to write; abort as soon as we have neither. */
+     * Loop as long as we have input samples to read or output samples
     * to write; abort as soon as we have neither.
     */
    while (1) {
-        /* Use the encoder's desired frame size for processing. */
+        /** Use the encoder's desired frame size for processing. */
        const int output_frame_size = output_codec_context->frame_size;
        int finished                = 0;
-        /* Make sure that there is one frame worth of samples in the FIFO
+        /**
         * Make sure that there is one frame worth of samples in the FIFO
         * buffer so that the encoder can do its work.
         * Since the decoder's and the encoder's frame size may differ, we
         * need to FIFO buffer to store as many frames worth of input samples
-         * that they make up at least one frame worth of output samples. */
+         * that they make up at least one frame worth of output samples.
         */
        while (av_audio_fifo_size(fifo) < output_frame_size) {
-            /* Decode one frame worth of audio samples, convert it to the
+            /**
-             * output sample format and put it into the FIFO buffer. */
+             * Decode one frame worth of audio samples, convert it to the
             * output sample format and put it into the FIFO buffer.
             */
            if (read_decode_convert_and_store(fifo, input_format_context,
                                              input_codec_context,
                                              output_codec_context,
                                              resample_context, &finished))
                goto cleanup;
-            /* If we are at the end of the input file, we continue
+            /**
-             * encoding the remaining audio samples to the output file. */
+             * If we are at the end of the input file, we continue
             * encoding the remaining audio samples to the output file.
             */
            if (finished)
                break;
        }
-        /* If we have enough samples for the encoder, we encode them.
+        /**
         * If we have enough samples for the encoder, we encode them.
         * At the end of the file, we pass the remaining samples to
-         * the encoder. */
+         * the encoder.
         */
        while (av_audio_fifo_size(fifo) >= output_frame_size ||
               (finished && av_audio_fifo_size(fifo) > 0))
-            /* Take one frame worth of audio samples from the FIFO buffer,
+            /**
-             * encode it and write it to the output file. */
+             * Take one frame worth of audio samples from the FIFO buffer,
             * encode it and write it to the output file.
             */
            if (load_encode_and_write(fifo, output_format_context,
                                      output_codec_context))
                goto cleanup;
-        /* If we are at the end of the input file and have encoded
+        /**
-         * all remaining samples, we can exit this loop and finish. */
+         * If we are at the end of the input file and have encoded
         * all remaining samples, we can exit this loop and finish.
         */
        if (finished) {
            int data_written;
-            /* Flush the encoder as it may have delayed frames. */
+            /** Flush the encoder as it may have delayed frames. */
            do {
                data_written = 0;
                if (encode_audio_frame(NULL, output_format_context,
                                       output_codec_context, &data_written))
                    goto cleanup;
@@ -870,7 +778,7 @@ int main(int argc, char **argv)
        }
    }
-    /* Write the trailer of the output file container. */
+    /** Write the trailer of the output file container. */
    if (write_output_file_trailer(output_format_context))
        goto cleanup;
    ret = 0;
--- a/doc/examples/transcoding.c
+++ b/doc/examples/transcoding.c
@@ -30,9 +30,9 @@
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libavfilter/avfiltergraph.h>
 #include <libavfilter/buffersink.h>
 #include <libavfilter/buffersrc.h>
 #include <libavutil/channel_layout.h>
 #include <libavutil/opt.h>
 #include <libavutil/pixdesc.h>
@@ -42,20 +42,9 @@ typedef struct FilteringContext {
    AVFilterContext *buffersink_ctx;
    AVFilterContext *buffersrc_ctx;
    AVFilterGraph *filter_graph;
    AVPacket *enc_pkt;
    AVFrame *filtered_frame;
 } FilteringContext;
 static FilteringContext *filter_ctx;
 typedef struct StreamContext {
    AVCodecContext *dec_ctx;
    AVCodecContext *enc_ctx;
    AVFrame *dec_frame;
 } StreamContext;
 static StreamContext *stream_ctx;
 static int open_input_file(const char *filename)
 {
    int ret;
@@ -72,46 +61,22 @@ static int open_input_file(const char *filename)
        return ret;
    }
    stream_ctx = av_calloc(ifmt_ctx->nb_streams, sizeof(*stream_ctx));
    if (!stream_ctx)
        return AVERROR(ENOMEM);
    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
-        AVStream *stream = ifmt_ctx->streams[i];
+        AVStream *stream;
        const AVCodec *dec = avcodec_find_decoder(stream->codecpar->codec_id);
        AVCodecContext *codec_ctx;
-        if (!dec) {
+        stream = ifmt_ctx->streams[i];
-            av_log(NULL, AV_LOG_ERROR, "Failed to find decoder for stream #%u\n", i);
+        codec_ctx = stream->codec;
            return AVERROR_DECODER_NOT_FOUND;
        }
        codec_ctx = avcodec_alloc_context3(dec);
        if (!codec_ctx) {
            av_log(NULL, AV_LOG_ERROR, "Failed to allocate the decoder context for stream #%u\n", i);
            return AVERROR(ENOMEM);
        }
        ret = avcodec_parameters_to_context(codec_ctx, stream->codecpar);
        if (ret < 0) {
            av_log(NULL, AV_LOG_ERROR, "Failed to copy decoder parameters to input decoder context "
                   "for stream #%u\n", i);
            return ret;
        }
        /* Reencode video & audio and remux subtitles etc. */
        if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
                || codec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
            if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
                codec_ctx->framerate = av_guess_frame_rate(ifmt_ctx, stream, NULL);
            /* Open decoder */
-            ret = avcodec_open2(codec_ctx, dec, NULL);
+            ret = avcodec_open2(codec_ctx,
                    avcodec_find_decoder(codec_ctx->codec_id), NULL);
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Failed to open decoder for stream #%u\n", i);
                return ret;
            }
        }
        stream_ctx[i].dec_ctx = codec_ctx;
        stream_ctx[i].dec_frame = av_frame_alloc();
        if (!stream_ctx[i].dec_frame)
            return AVERROR(ENOMEM);
    }
    av_dump_format(ifmt_ctx, 0, filename, 0);
@@ -123,7 +88,7 @@ static int open_output_file(const char *filename)
    AVStream *out_stream;
    AVStream *in_stream;
    AVCodecContext *dec_ctx, *enc_ctx;
-    const AVCodec *encoder;
+    AVCodec *encoder;
    int ret;
    unsigned int i;
@@ -143,7 +108,8 @@ static int open_output_file(const char *filename)
        }
        in_stream = ifmt_ctx->streams[i];
-        dec_ctx = stream_ctx[i].dec_ctx;
+        dec_ctx = in_stream->codec;
        enc_ctx = out_stream->codec;
        if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
                || dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
@@ -153,11 +119,6 @@ static int open_output_file(const char *filename)
                av_log(NULL, AV_LOG_FATAL, "Necessary encoder not found\n");
                return AVERROR_INVALIDDATA;
            }
            enc_ctx = avcodec_alloc_context3(encoder);
            if (!enc_ctx) {
                av_log(NULL, AV_LOG_FATAL, "Failed to allocate the encoder context\n");
                return AVERROR(ENOMEM);
            }
            /* In this example, we transcode to same properties (picture size,
             * sample rate etc.). These properties can be changed for output
@@ -172,7 +133,7 @@ static int open_output_file(const char *filename)
                else
                    enc_ctx->pix_fmt = dec_ctx->pix_fmt;
                /* video time_base can be set to whatever is handy and supported by encoder */
-                enc_ctx->time_base = av_inv_q(dec_ctx->framerate);
+                enc_ctx->time_base = dec_ctx->time_base;
            } else {
                enc_ctx->sample_rate = dec_ctx->sample_rate;
                enc_ctx->channel_layout = dec_ctx->channel_layout;
@@ -182,36 +143,28 @@ static int open_output_file(const char *filename)
                enc_ctx->time_base = (AVRational){1, enc_ctx->sample_rate};
            }
            if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
                enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
            /* Third parameter can be used to pass settings to encoder */
            ret = avcodec_open2(enc_ctx, encoder, NULL);
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Cannot open video encoder for stream #%u\n", i);
                return ret;
            }
            ret = avcodec_parameters_from_context(out_stream->codecpar, enc_ctx);
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Failed to copy encoder parameters to output stream #%u\n", i);
                return ret;
            }
            out_stream->time_base = enc_ctx->time_base;
            stream_ctx[i].enc_ctx = enc_ctx;
        } else if (dec_ctx->codec_type == AVMEDIA_TYPE_UNKNOWN) {
            av_log(NULL, AV_LOG_FATAL, "Elementary stream #%d is of unknown type, cannot proceed\n", i);
            return AVERROR_INVALIDDATA;
        } else {
            /* if this stream must be remuxed */
-            ret = avcodec_parameters_copy(out_stream->codecpar, in_stream->codecpar);
+            ret = avcodec_copy_context(ofmt_ctx->streams[i]->codec,
                    ifmt_ctx->streams[i]->codec);
            if (ret < 0) {
-                av_log(NULL, AV_LOG_ERROR, "Copying parameters for stream #%u failed\n", i);
+                av_log(NULL, AV_LOG_ERROR, "Copying stream context failed\n");
                return ret;
            }
            out_stream->time_base = in_stream->time_base;
        }
        if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
            enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
    }
    av_dump_format(ofmt_ctx, 0, filename, 1);
@@ -238,8 +191,8 @@ static int init_filter(FilteringContext* fctx, AVCodecContext *dec_ctx,
 {
    char args[512];
    int ret = 0;
-    const AVFilter *buffersrc = NULL;
+    AVFilter *buffersrc = NULL;
-    const AVFilter *buffersink = NULL;
+    AVFilter *buffersink = NULL;
    AVFilterContext *buffersrc_ctx = NULL;
    AVFilterContext *buffersink_ctx = NULL;
    AVFilterInOut *outputs = avfilter_inout_alloc();
@@ -395,76 +348,67 @@ static int init_filters(void)
        filter_ctx[i].buffersrc_ctx  = NULL;
        filter_ctx[i].buffersink_ctx = NULL;
        filter_ctx[i].filter_graph   = NULL;
-        if (!(ifmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO
+        if (!(ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO
-                || ifmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO))
+                || ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO))
            continue;
-        if (ifmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
+        if (ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
            filter_spec = "null"; /* passthrough (dummy) filter for video */
        else
            filter_spec = "anull"; /* passthrough (dummy) filter for audio */
-        ret = init_filter(&filter_ctx[i], stream_ctx[i].dec_ctx,
+        ret = init_filter(&filter_ctx[i], ifmt_ctx->streams[i]->codec,
-                stream_ctx[i].enc_ctx, filter_spec);
+                ofmt_ctx->streams[i]->codec, filter_spec);
        if (ret)
            return ret;
        filter_ctx[i].enc_pkt = av_packet_alloc();
        if (!filter_ctx[i].enc_pkt)
            return AVERROR(ENOMEM);
        filter_ctx[i].filtered_frame = av_frame_alloc();
        if (!filter_ctx[i].filtered_frame)
            return AVERROR(ENOMEM);
    }
    return 0;
 }
-static int encode_write_frame(unsigned int stream_index, int flush)
+static int encode_write_frame(AVFrame *filt_frame, unsigned int stream_index, int *got_frame) {
 {
    StreamContext *stream = &stream_ctx[stream_index];
    FilteringContext *filter = &filter_ctx[stream_index];
    AVFrame *filt_frame = flush ? NULL : filter->filtered_frame;
    AVPacket *enc_pkt = filter->enc_pkt;
    int ret;
    int got_frame_local;
    AVPacket enc_pkt;
    int (*enc_func)(AVCodecContext *, AVPacket *, const AVFrame *, int *) =
        (ifmt_ctx->streams[stream_index]->codec->codec_type ==
         AVMEDIA_TYPE_VIDEO) ? avcodec_encode_video2 : avcodec_encode_audio2;
    if (!got_frame)
        got_frame = &got_frame_local;
    av_log(NULL, AV_LOG_INFO, "Encoding frame\n");
    /* encode filtered frame */
-    av_packet_unref(enc_pkt);
+    enc_pkt.data = NULL;
-
+    enc_pkt.size = 0;
-    ret = avcodec_send_frame(stream->enc_ctx, filt_frame);
+    av_init_packet(&enc_pkt);
-
+    ret = enc_func(ofmt_ctx->streams[stream_index]->codec, &enc_pkt,
            filt_frame, got_frame);
    av_frame_free(&filt_frame);
    if (ret < 0)
        return ret;
    if (!(*got_frame))
        return 0;
-    while (ret >= 0) {
+    /* prepare packet for muxing */
-        ret = avcodec_receive_packet(stream->enc_ctx, enc_pkt);
+    enc_pkt.stream_index = stream_index;
-
+    av_packet_rescale_ts(&enc_pkt,
-        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
+                         ofmt_ctx->streams[stream_index]->codec->time_base,
-            return 0;
+                         ofmt_ctx->streams[stream_index]->time_base);
        /* prepare packet for muxing */
        enc_pkt->stream_index = stream_index;
        av_packet_rescale_ts(enc_pkt,
                             stream->enc_ctx->time_base,
                             ofmt_ctx->streams[stream_index]->time_base);
        av_log(NULL, AV_LOG_DEBUG, "Muxing frame\n");
        /* mux encoded frame */
        ret = av_interleaved_write_frame(ofmt_ctx, enc_pkt);
    }
    av_log(NULL, AV_LOG_DEBUG, "Muxing frame\n");
    /* mux encoded frame */
    ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt);
    return ret;
 }
 static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
 {
    FilteringContext *filter = &filter_ctx[stream_index];
    int ret;
    AVFrame *filt_frame;
    av_log(NULL, AV_LOG_INFO, "Pushing decoded frame to filters\n");
    /* push the decoded frame into the filtergraph */
-    ret = av_buffersrc_add_frame_flags(filter->buffersrc_ctx,
+    ret = av_buffersrc_add_frame_flags(filter_ctx[stream_index].buffersrc_ctx,
            frame, 0);
    if (ret < 0) {
        av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n");
@@ -473,9 +417,14 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
    /* pull filtered frames from the filtergraph */
    while (1) {
        filt_frame = av_frame_alloc();
        if (!filt_frame) {
            ret = AVERROR(ENOMEM);
            break;
        }
        av_log(NULL, AV_LOG_INFO, "Pulling filtered frame from filters\n");
-        ret = av_buffersink_get_frame(filter->buffersink_ctx,
+        ret = av_buffersink_get_frame(filter_ctx[stream_index].buffersink_ctx,
-                                      filter->filtered_frame);
+                filt_frame);
        if (ret < 0) {
            /* if no more frames for output - returns AVERROR(EAGAIN)
             * if flushed and no more frames for output - returns AVERROR_EOF
@@ -483,12 +432,12 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
             */
            if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
                ret = 0;
            av_frame_free(&filt_frame);
            break;
        }
-        filter->filtered_frame->pict_type = AV_PICTURE_TYPE_NONE;
+        filt_frame->pict_type = AV_PICTURE_TYPE_NONE;
-        ret = encode_write_frame(stream_index, 0);
+        ret = encode_write_frame(filt_frame, stream_index, NULL);
        av_frame_unref(filter->filtered_frame);
        if (ret < 0)
            break;
    }
@@ -498,80 +447,99 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
 static int flush_encoder(unsigned int stream_index)
 {
-    if (!(stream_ctx[stream_index].enc_ctx->codec->capabilities &
+    int ret;
    int got_frame;
    if (!(ofmt_ctx->streams[stream_index]->codec->codec->capabilities &
                AV_CODEC_CAP_DELAY))
        return 0;
-    av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder\n", stream_index);
+    while (1) {
-    return encode_write_frame(stream_index, 1);
+        av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder\n", stream_index);
        ret = encode_write_frame(NULL, stream_index, &got_frame);
        if (ret < 0)
            break;
        if (!got_frame)
            return 0;
    }
    return ret;
 }
 int main(int argc, char **argv)
 {
    int ret;
-    AVPacket *packet = NULL;
+    AVPacket packet = { .data = NULL, .size = 0 };
    AVFrame *frame = NULL;
    enum AVMediaType type;
    unsigned int stream_index;
    unsigned int i;
    int got_frame;
    int (*dec_func)(AVCodecContext *, AVFrame *, int *, const AVPacket *);
    if (argc != 3) {
        av_log(NULL, AV_LOG_ERROR, "Usage: %s <input file> <output file>\n", argv[0]);
        return 1;
    }
    av_register_all();
    avfilter_register_all();
    if ((ret = open_input_file(argv[1])) < 0)
        goto end;
    if ((ret = open_output_file(argv[2])) < 0)
        goto end;
    if ((ret = init_filters()) < 0)
        goto end;
    if (!(packet = av_packet_alloc()))
        goto end;
    /* read all packets */
    while (1) {
-        if ((ret = av_read_frame(ifmt_ctx, packet)) < 0)
+        if ((ret = av_read_frame(ifmt_ctx, &packet)) < 0)
            break;
-        stream_index = packet->stream_index;
+        stream_index = packet.stream_index;
        type = ifmt_ctx->streams[packet.stream_index]->codec->codec_type;
        av_log(NULL, AV_LOG_DEBUG, "Demuxer gave frame of stream_index %u\n",
                stream_index);
        if (filter_ctx[stream_index].filter_graph) {
            StreamContext *stream = &stream_ctx[stream_index];
            av_log(NULL, AV_LOG_DEBUG, "Going to reencode&filter the frame\n");
-
+            frame = av_frame_alloc();
-            av_packet_rescale_ts(packet,
+            if (!frame) {
                ret = AVERROR(ENOMEM);
                break;
            }
            av_packet_rescale_ts(&packet,
                                 ifmt_ctx->streams[stream_index]->time_base,
-                                 stream->dec_ctx->time_base);
+                                 ifmt_ctx->streams[stream_index]->codec->time_base);
-            ret = avcodec_send_packet(stream->dec_ctx, packet);
+            dec_func = (type == AVMEDIA_TYPE_VIDEO) ? avcodec_decode_video2 :
                avcodec_decode_audio4;
            ret = dec_func(ifmt_ctx->streams[stream_index]->codec, frame,
                    &got_frame, &packet);
            if (ret < 0) {
                av_frame_free(&frame);
                av_log(NULL, AV_LOG_ERROR, "Decoding failed\n");
                break;
            }
-            while (ret >= 0) {
+            if (got_frame) {
-                ret = avcodec_receive_frame(stream->dec_ctx, stream->dec_frame);
+                frame->pts = av_frame_get_best_effort_timestamp(frame);
-                if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
+                ret = filter_encode_write_frame(frame, stream_index);
-                    break;
+                av_frame_free(&frame);
                else if (ret < 0)
                    goto end;
                stream->dec_frame->pts = stream->dec_frame->best_effort_timestamp;
                ret = filter_encode_write_frame(stream->dec_frame, stream_index);
                if (ret < 0)
                    goto end;
            } else {
                av_frame_free(&frame);
            }
        } else {
            /* remux this frame without reencoding */
-            av_packet_rescale_ts(packet,
+            av_packet_rescale_ts(&packet,
                                 ifmt_ctx->streams[stream_index]->time_base,
                                 ofmt_ctx->streams[stream_index]->time_base);
-            ret = av_interleaved_write_frame(ofmt_ctx, packet);
+            ret = av_interleaved_write_frame(ofmt_ctx, &packet);
            if (ret < 0)
                goto end;
        }
-        av_packet_unref(packet);
+        av_packet_unref(&packet);
    }
    /* flush filters and encoders */
@@ -595,21 +563,16 @@ int main(int argc, char **argv)
    av_write_trailer(ofmt_ctx);
 end:
-    av_packet_free(&packet);
+    av_packet_unref(&packet);
    av_frame_free(&frame);
    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
-        avcodec_free_context(&stream_ctx[i].dec_ctx);
+        avcodec_close(ifmt_ctx->streams[i]->codec);
-        if (ofmt_ctx && ofmt_ctx->nb_streams > i && ofmt_ctx->streams[i] && stream_ctx[i].enc_ctx)
+        if (ofmt_ctx && ofmt_ctx->nb_streams > i && ofmt_ctx->streams[i] && ofmt_ctx->streams[i]->codec)
-            avcodec_free_context(&stream_ctx[i].enc_ctx);
+            avcodec_close(ofmt_ctx->streams[i]->codec);
-        if (filter_ctx && filter_ctx[i].filter_graph) {
+        if (filter_ctx && filter_ctx[i].filter_graph)
            avfilter_graph_free(&filter_ctx[i].filter_graph);
            av_packet_free(&filter_ctx[i].enc_pkt);
            av_frame_free(&filter_ctx[i].filtered_frame);
        }
        av_frame_free(&stream_ctx[i].dec_frame);
    }
    av_free(filter_ctx);
    av_free(stream_ctx);
    avformat_close_input(&ifmt_ctx);
    if (ofmt_ctx && !(ofmt_ctx->oformat->flags & AVFMT_NOFILE))
        avio_closep(&ofmt_ctx->pb);
--- a/doc/examples/vaapi_encode.c
+++ b/doc/examples/vaapi_encode.c
@@ -1,224 +0,0 @@
 /*
 * Video Acceleration API (video encoding) encode sample
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * Intel VAAPI-accelerated encoding example.
 *
 * @example vaapi_encode.c
 * This example shows how to do VAAPI-accelerated encoding. now only support NV12
 * raw file, usage like: vaapi_encode 1920 1080 input.yuv output.h264
 *
 */
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
 #include <libavcodec/avcodec.h>
 #include <libavutil/pixdesc.h>
 #include <libavutil/hwcontext.h>
 static int width, height;
 static AVBufferRef *hw_device_ctx = NULL;
 static int set_hwframe_ctx(AVCodecContext *ctx, AVBufferRef *hw_device_ctx)
 {
    AVBufferRef *hw_frames_ref;
    AVHWFramesContext *frames_ctx = NULL;
    int err = 0;
    if (!(hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx))) {
        fprintf(stderr, "Failed to create VAAPI frame context.\n");
        return -1;
    }
    frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);
    frames_ctx->format    = AV_PIX_FMT_VAAPI;
    frames_ctx->sw_format = AV_PIX_FMT_NV12;
    frames_ctx->width     = width;
    frames_ctx->height    = height;
    frames_ctx->initial_pool_size = 20;
    if ((err = av_hwframe_ctx_init(hw_frames_ref)) < 0) {
        fprintf(stderr, "Failed to initialize VAAPI frame context."
                "Error code: %s\n",av_err2str(err));
        av_buffer_unref(&hw_frames_ref);
        return err;
    }
    ctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);
    if (!ctx->hw_frames_ctx)
        err = AVERROR(ENOMEM);
    av_buffer_unref(&hw_frames_ref);
    return err;
 }
 static int encode_write(AVCodecContext *avctx, AVFrame *frame, FILE *fout)
 {
    int ret = 0;
    AVPacket *enc_pkt;
    if (!(enc_pkt = av_packet_alloc()))
        return AVERROR(ENOMEM);
    if ((ret = avcodec_send_frame(avctx, frame)) < 0) {
        fprintf(stderr, "Error code: %s\n", av_err2str(ret));
        goto end;
    }
    while (1) {
        ret = avcodec_receive_packet(avctx, enc_pkt);
        if (ret)
            break;
        enc_pkt->stream_index = 0;
        ret = fwrite(enc_pkt->data, enc_pkt->size, 1, fout);
        av_packet_unref(enc_pkt);
    }
 end:
    av_packet_free(&enc_pkt);
    ret = ((ret == AVERROR(EAGAIN)) ? 0 : -1);
    return ret;
 }
 int main(int argc, char *argv[])
 {
    int size, err;
    FILE *fin = NULL, *fout = NULL;
    AVFrame *sw_frame = NULL, *hw_frame = NULL;
    AVCodecContext *avctx = NULL;
    const AVCodec *codec = NULL;
    const char *enc_name = "h264_vaapi";
    if (argc < 5) {
        fprintf(stderr, "Usage: %s <width> <height> <input file> <output file>\n", argv[0]);
        return -1;
    }
    width  = atoi(argv[1]);
    height = atoi(argv[2]);
    size   = width * height;
    if (!(fin = fopen(argv[3], "r"))) {
        fprintf(stderr, "Fail to open input file : %s\n", strerror(errno));
        return -1;
    }
    if (!(fout = fopen(argv[4], "w+b"))) {
        fprintf(stderr, "Fail to open output file : %s\n", strerror(errno));
        err = -1;
        goto close;
    }
    err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI,
                                 NULL, NULL, 0);
    if (err < 0) {
        fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(err));
        goto close;
    }
    if (!(codec = avcodec_find_encoder_by_name(enc_name))) {
        fprintf(stderr, "Could not find encoder.\n");
        err = -1;
        goto close;
    }
    if (!(avctx = avcodec_alloc_context3(codec))) {
        err = AVERROR(ENOMEM);
        goto close;
    }
    avctx->width     = width;
    avctx->height    = height;
    avctx->time_base = (AVRational){1, 25};
    avctx->framerate = (AVRational){25, 1};
    avctx->sample_aspect_ratio = (AVRational){1, 1};
    avctx->pix_fmt   = AV_PIX_FMT_VAAPI;
    /* set hw_frames_ctx for encoder's AVCodecContext */
    if ((err = set_hwframe_ctx(avctx, hw_device_ctx)) < 0) {
        fprintf(stderr, "Failed to set hwframe context.\n");
        goto close;
    }
    if ((err = avcodec_open2(avctx, codec, NULL)) < 0) {
        fprintf(stderr, "Cannot open video encoder codec. Error code: %s\n", av_err2str(err));
        goto close;
    }
    while (1) {
        if (!(sw_frame = av_frame_alloc())) {
            err = AVERROR(ENOMEM);
            goto close;
        }
        /* read data into software frame, and transfer them into hw frame */
        sw_frame->width  = width;
        sw_frame->height = height;
        sw_frame->format = AV_PIX_FMT_NV12;
        if ((err = av_frame_get_buffer(sw_frame, 0)) < 0)
            goto close;
        if ((err = fread((uint8_t*)(sw_frame->data[0]), size, 1, fin)) <= 0)
            break;
        if ((err = fread((uint8_t*)(sw_frame->data[1]), size/2, 1, fin)) <= 0)
            break;
        if (!(hw_frame = av_frame_alloc())) {
            err = AVERROR(ENOMEM);
            goto close;
        }
        if ((err = av_hwframe_get_buffer(avctx->hw_frames_ctx, hw_frame, 0)) < 0) {
            fprintf(stderr, "Error code: %s.\n", av_err2str(err));
            goto close;
        }
        if (!hw_frame->hw_frames_ctx) {
            err = AVERROR(ENOMEM);
            goto close;
        }
        if ((err = av_hwframe_transfer_data(hw_frame, sw_frame, 0)) < 0) {
            fprintf(stderr, "Error while transferring frame data to surface."
                    "Error code: %s.\n", av_err2str(err));
            goto close;
        }
        if ((err = (encode_write(avctx, hw_frame, fout))) < 0) {
            fprintf(stderr, "Failed to encode.\n");
            goto close;
        }
        av_frame_free(&hw_frame);
        av_frame_free(&sw_frame);
    }
    /* flush encoder */
    err = encode_write(avctx, NULL, fout);
    if (err == AVERROR_EOF)
        err = 0;
 close:
    if (fin)
        fclose(fin);
    if (fout)
        fclose(fout);
    av_frame_free(&sw_frame);
    av_frame_free(&hw_frame);
    avcodec_free_context(&avctx);
    av_buffer_unref(&hw_device_ctx);
    return err;
 }
--- a/doc/examples/vaapi_transcode.c
+++ b/doc/examples/vaapi_transcode.c
@@ -1,308 +0,0 @@
 /*
 * Video Acceleration API (video transcoding) transcode sample
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 /**
 * @file
 * Intel VAAPI-accelerated transcoding example.
 *
 * @example vaapi_transcode.c
 * This example shows how to do VAAPI-accelerated transcoding.
 * Usage: vaapi_transcode input_stream codec output_stream
 * e.g: - vaapi_transcode input.mp4 h264_vaapi output_h264.mp4
 *      - vaapi_transcode input.mp4 vp9_vaapi output_vp9.ivf
 */
 #include <stdio.h>
 #include <errno.h>
 #include <libavutil/hwcontext.h>
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 static AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
 static AVBufferRef *hw_device_ctx = NULL;
 static AVCodecContext *decoder_ctx = NULL, *encoder_ctx = NULL;
 static int video_stream = -1;
 static AVStream *ost;
 static int initialized = 0;
 static enum AVPixelFormat get_vaapi_format(AVCodecContext *ctx,
                                           const enum AVPixelFormat *pix_fmts)
 {
    const enum AVPixelFormat *p;
    for (p = pix_fmts; *p != AV_PIX_FMT_NONE; p++) {
        if (*p == AV_PIX_FMT_VAAPI)
            return *p;
    }
    fprintf(stderr, "Unable to decode this file using VA-API.\n");
    return AV_PIX_FMT_NONE;
 }
 static int open_input_file(const char *filename)
 {
    int ret;
    const AVCodec *decoder = NULL;
    AVStream *video = NULL;
    if ((ret = avformat_open_input(&ifmt_ctx, filename, NULL, NULL)) < 0) {
        fprintf(stderr, "Cannot open input file '%s', Error code: %s\n",
                filename, av_err2str(ret));
        return ret;
    }
    if ((ret = avformat_find_stream_info(ifmt_ctx, NULL)) < 0) {
        fprintf(stderr, "Cannot find input stream information. Error code: %s\n",
                av_err2str(ret));
        return ret;
    }
    ret = av_find_best_stream(ifmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0);
    if (ret < 0) {
        fprintf(stderr, "Cannot find a video stream in the input file. "
                "Error code: %s\n", av_err2str(ret));
        return ret;
    }
    video_stream = ret;
    if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
        return AVERROR(ENOMEM);
    video = ifmt_ctx->streams[video_stream];
    if ((ret = avcodec_parameters_to_context(decoder_ctx, video->codecpar)) < 0) {
        fprintf(stderr, "avcodec_parameters_to_context error. Error code: %s\n",
                av_err2str(ret));
        return ret;
    }
    decoder_ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
    if (!decoder_ctx->hw_device_ctx) {
        fprintf(stderr, "A hardware device reference create failed.\n");
        return AVERROR(ENOMEM);
    }
    decoder_ctx->get_format    = get_vaapi_format;
    if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0)
        fprintf(stderr, "Failed to open codec for decoding. Error code: %s\n",
                av_err2str(ret));
    return ret;
 }
 static int encode_write(AVPacket *enc_pkt, AVFrame *frame)
 {
    int ret = 0;
    av_packet_unref(enc_pkt);
    if ((ret = avcodec_send_frame(encoder_ctx, frame)) < 0) {
        fprintf(stderr, "Error during encoding. Error code: %s\n", av_err2str(ret));
        goto end;
    }
    while (1) {
        ret = avcodec_receive_packet(encoder_ctx, enc_pkt);
        if (ret)
            break;
        enc_pkt->stream_index = 0;
        av_packet_rescale_ts(enc_pkt, ifmt_ctx->streams[video_stream]->time_base,
                             ofmt_ctx->streams[0]->time_base);
        ret = av_interleaved_write_frame(ofmt_ctx, enc_pkt);
        if (ret < 0) {
            fprintf(stderr, "Error during writing data to output file. "
                    "Error code: %s\n", av_err2str(ret));
            return -1;
        }
    }
 end:
    if (ret == AVERROR_EOF)
        return 0;
    ret = ((ret == AVERROR(EAGAIN)) ? 0:-1);
    return ret;
 }
 static int dec_enc(AVPacket *pkt, const AVCodec *enc_codec)
 {
    AVFrame *frame;
    int ret = 0;
    ret = avcodec_send_packet(decoder_ctx, pkt);
    if (ret < 0) {
        fprintf(stderr, "Error during decoding. Error code: %s\n", av_err2str(ret));
        return ret;
    }
    while (ret >= 0) {
        if (!(frame = av_frame_alloc()))
            return AVERROR(ENOMEM);
        ret = avcodec_receive_frame(decoder_ctx, frame);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
            av_frame_free(&frame);
            return 0;
        } else if (ret < 0) {
            fprintf(stderr, "Error while decoding. Error code: %s\n", av_err2str(ret));
            goto fail;
        }
        if (!initialized) {
            /* we need to ref hw_frames_ctx of decoder to initialize encoder's codec.
               Only after we get a decoded frame, can we obtain its hw_frames_ctx */
            encoder_ctx->hw_frames_ctx = av_buffer_ref(decoder_ctx->hw_frames_ctx);
            if (!encoder_ctx->hw_frames_ctx) {
                ret = AVERROR(ENOMEM);
                goto fail;
            }
            /* set AVCodecContext Parameters for encoder, here we keep them stay
             * the same as decoder.
             * xxx: now the sample can't handle resolution change case.
             */
            encoder_ctx->time_base = av_inv_q(decoder_ctx->framerate);
            encoder_ctx->pix_fmt   = AV_PIX_FMT_VAAPI;
            encoder_ctx->width     = decoder_ctx->width;
            encoder_ctx->height    = decoder_ctx->height;
            if ((ret = avcodec_open2(encoder_ctx, enc_codec, NULL)) < 0) {
                fprintf(stderr, "Failed to open encode codec. Error code: %s\n",
                        av_err2str(ret));
                goto fail;
            }
            if (!(ost = avformat_new_stream(ofmt_ctx, enc_codec))) {
                fprintf(stderr, "Failed to allocate stream for output format.\n");
                ret = AVERROR(ENOMEM);
                goto fail;
            }
            ost->time_base = encoder_ctx->time_base;
            ret = avcodec_parameters_from_context(ost->codecpar, encoder_ctx);
            if (ret < 0) {
                fprintf(stderr, "Failed to copy the stream parameters. "
                        "Error code: %s\n", av_err2str(ret));
                goto fail;
            }
            /* write the stream header */
            if ((ret = avformat_write_header(ofmt_ctx, NULL)) < 0) {
                fprintf(stderr, "Error while writing stream header. "
                        "Error code: %s\n", av_err2str(ret));
                goto fail;
            }
            initialized = 1;
        }
        if ((ret = encode_write(pkt, frame)) < 0)
            fprintf(stderr, "Error during encoding and writing.\n");
 fail:
        av_frame_free(&frame);
        if (ret < 0)
            return ret;
    }
    return 0;
 }
 int main(int argc, char **argv)
 {
    const AVCodec *enc_codec;
    int ret = 0;
    AVPacket *dec_pkt;
    if (argc != 4) {
        fprintf(stderr, "Usage: %s <input file> <encode codec> <output file>\n"
                "The output format is guessed according to the file extension.\n"
                "\n", argv[0]);
        return -1;
    }
    ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, NULL, NULL, 0);
    if (ret < 0) {
        fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(ret));
        return -1;
    }
    dec_pkt = av_packet_alloc();
    if (!dec_pkt) {
        fprintf(stderr, "Failed to allocate decode packet\n");
        goto end;
    }
    if ((ret = open_input_file(argv[1])) < 0)
        goto end;
    if (!(enc_codec = avcodec_find_encoder_by_name(argv[2]))) {
        fprintf(stderr, "Could not find encoder '%s'\n", argv[2]);
        ret = -1;
        goto end;
    }
    if ((ret = (avformat_alloc_output_context2(&ofmt_ctx, NULL, NULL, argv[3]))) < 0) {
        fprintf(stderr, "Failed to deduce output format from file extension. Error code: "
                "%s\n", av_err2str(ret));
        goto end;
    }
    if (!(encoder_ctx = avcodec_alloc_context3(enc_codec))) {
        ret = AVERROR(ENOMEM);
        goto end;
    }
    ret = avio_open(&ofmt_ctx->pb, argv[3], AVIO_FLAG_WRITE);
    if (ret < 0) {
        fprintf(stderr, "Cannot open output file. "
                "Error code: %s\n", av_err2str(ret));
        goto end;
    }
    /* read all packets and only transcoding video */
    while (ret >= 0) {
        if ((ret = av_read_frame(ifmt_ctx, dec_pkt)) < 0)
            break;
        if (video_stream == dec_pkt->stream_index)
            ret = dec_enc(dec_pkt, enc_codec);
        av_packet_unref(dec_pkt);
    }
    /* flush decoder */
    av_packet_unref(dec_pkt);
    ret = dec_enc(dec_pkt, enc_codec);
    /* flush encoder */
    ret = encode_write(dec_pkt, NULL);
    /* write the trailer for output stream */
    av_write_trailer(ofmt_ctx);
 end:
    avformat_close_input(&ifmt_ctx);
    avformat_close_input(&ofmt_ctx);
    avcodec_free_context(&decoder_ctx);
    avcodec_free_context(&encoder_ctx);
    av_buffer_unref(&hw_device_ctx);
    av_packet_free(&dec_pkt);
    return ret;
 }
--- a/doc/faq.texi
+++ b/doc/faq.texi
@@ -76,7 +76,7 @@ the gcc developers. Note that we will not add workarounds for gcc bugs.
 Also note that (some of) the gcc developers believe this is not a bug or
 not a bug they should fix:
-@url{https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203}.
+@url{http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203}.
 Then again, some of them do not know the difference between an undecidable
 problem and an NP-hard problem...
@@ -257,13 +257,13 @@ default.
@section Which are good parameters for encoding high quality MPEG-4?
 '-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2',
-things to try: '-bf 2', '-mpv_flags qp_rd', '-mpv_flags mv0', '-mpv_flags skip_rd'.
+things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd'.
@section Which are good parameters for encoding high quality MPEG-1/MPEG-2?
 '-mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 100 -pass 1/2'
 but beware the '-g 100' might cause problems with some decoders.
-Things to try: '-bf 2', '-mpv_flags qp_rd', '-mpv_flags mv0', '-mpv_flags skip_rd'.
+Things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd.
@section Interlaced video looks very bad when encoded with ffmpeg, what is wrong?
@@ -311,18 +311,18 @@ invoking ffmpeg with several @option{-i} options.
 For audio, to put all channels together in a single stream (example: two
 mono streams into one stereo stream): this is sometimes called to
@emph{merge} them, and can be done using the
-@url{ffmpeg-filters.html#amerge, @code{amerge}} filter.
+@url{https://ffmpeg.org/ffmpeg-filters.html#amerge, @code{amerge}} filter.
@item
 For audio, to play one on top of the other: this is called to @emph{mix}
 them, and can be done by first merging them into a single stream and then
-using the @url{ffmpeg-filters.html#pan, @code{pan}} filter to mix
+using the @url{https://ffmpeg.org/ffmpeg-filters.html#pan, @code{pan}} filter to mix
 the channels at will.
@item
 For video, to display both together, side by side or one on top of a part of
 the other; it can be done using the
-@url{ffmpeg-filters.html#overlay, @code{overlay}} video filter.
+@url{https://ffmpeg.org/ffmpeg-filters.html#overlay, @code{overlay}} video filter.
@end itemize
@@ -333,19 +333,19 @@ There are several solutions, depending on the exact circumstances.
@subsection Concatenating using the concat @emph{filter}
-FFmpeg has a @url{ffmpeg-filters.html#concat,
+FFmpeg has a @url{https://ffmpeg.org/ffmpeg-filters.html#concat,
@code{concat}} filter designed specifically for that, with examples in the
 documentation. This operation is recommended if you need to re-encode.
@subsection Concatenating using the concat @emph{demuxer}
-FFmpeg has a @url{ffmpeg-formats.html#concat,
+FFmpeg has a @url{https://www.ffmpeg.org/ffmpeg-formats.html#concat,
@code{concat}} demuxer which you can use when you want to avoid a re-encode and
 your format doesn't support file level concatenation.
@subsection Concatenating using the concat @emph{protocol} (file level)
-FFmpeg has a @url{ffmpeg-protocols.html#concat,
+FFmpeg has a @url{https://ffmpeg.org/ffmpeg-protocols.html#concat,
@code{concat}} protocol designed specifically for that, with examples in the
 documentation.
@@ -385,7 +385,7 @@ mkfifo intermediate2.mpg
 ffmpeg -i input1.avi -qscale:v 1 -y intermediate1.mpg < /dev/null &
 ffmpeg -i input2.avi -qscale:v 1 -y intermediate2.mpg < /dev/null &
 cat intermediate1.mpg intermediate2.mpg |\
-ffmpeg -f mpeg -i - -c:v mpeg4 -c:a libmp3lame output.avi
+ffmpeg -f mpeg -i - -c:v mpeg4 -acodec libmp3lame output.avi
@end example
@subsection Concatenating using raw audio and video
@@ -407,13 +407,13 @@ mkfifo temp2.a
 mkfifo temp2.v
 mkfifo all.a
 mkfifo all.v
-ffmpeg -i input1.flv -vn -f u16le -c:a pcm_s16le -ac 2 -ar 44100 - > temp1.a < /dev/null &
+ffmpeg -i input1.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp1.a < /dev/null &
-ffmpeg -i input2.flv -vn -f u16le -c:a pcm_s16le -ac 2 -ar 44100 - > temp2.a < /dev/null &
+ffmpeg -i input2.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp2.a < /dev/null &
 ffmpeg -i input1.flv -an -f yuv4mpegpipe - > temp1.v < /dev/null &
@{ ffmpeg -i input2.flv -an -f yuv4mpegpipe - < /dev/null | tail -n +2 > temp2.v ; @} &
 cat temp1.a temp2.a > all.a &
 cat temp1.v temp2.v > all.v &
-ffmpeg -f u16le -c:a pcm_s16le -ac 2 -ar 44100 -i all.a \
+ffmpeg -f u16le -acodec pcm_s16le -ac 2 -ar 44100 -i all.a \
       -f yuv4mpegpipe -i all.v \
       -y output.flv
 rm temp[12].[av] all.[av]
@@ -485,7 +485,7 @@ scaling adjusts the SAR to keep the DAR constant.
 If you want to stretch, or “unstretch”, the image, you need to override the
 information with the
-@url{ffmpeg-filters.html#setdar_002c-setsar, @code{setdar or setsar filters}}.
+@url{https://ffmpeg.org/ffmpeg-filters.html#setdar_002c-setsar, @code{setdar or setsar filters}}.
 Do not forget to examine carefully the original video to check whether the
 stretching comes from the image or from the aspect ratio information.
@@ -501,71 +501,6 @@ ffmpeg -i ega_screen.nut -vf setdar=4/3 ega_screen_anamorphic.nut
 ffmpeg -i ega_screen.nut -aspect 4/3 -c copy ega_screen_overridden.nut
@end example
@anchor{background task}
@section How do I run ffmpeg as a background task?
 ffmpeg normally checks the console input, for entries like "q" to stop
 and "?" to give help, while performing operations. ffmpeg does not have a way of
 detecting when it is running as a background task.
 When it checks the console input, that can cause the process running ffmpeg
 in the background to suspend.
 To prevent those input checks, allowing ffmpeg to run as a background task,
 use the @url{ffmpeg.html#stdin-option, @code{-nostdin} option}
 in the ffmpeg invocation. This is effective whether you run ffmpeg in a shell
 or invoke ffmpeg in its own process via an operating system API.
 As an alternative, when you are running ffmpeg in a shell, you can redirect
 standard input to @code{/dev/null} (on Linux and macOS)
 or @code{NUL} (on Windows). You can do this redirect either
 on the ffmpeg invocation, or from a shell script which calls ffmpeg.
 For example:
@example
 ffmpeg -nostdin -i INPUT OUTPUT
@end example
 or (on Linux, macOS, and other UNIX-like shells):
@example
 ffmpeg -i INPUT OUTPUT </dev/null
@end example
 or (on Windows):
@example
 ffmpeg -i INPUT OUTPUT <NUL
@end example
@section How do I prevent ffmpeg from suspending with a message like @emph{suspended (tty output)}?
 If you run ffmpeg in the background, you may find that its process suspends.
 There may be a message like @emph{suspended (tty output)}. The question is how
 to prevent the process from being suspended.
 For example:
@example
 % ffmpeg -i INPUT OUTPUT &> ~/tmp/log.txt &
 [1] 93352
 %
 [1]  + suspended (tty output)  ffmpeg -i INPUT OUTPUT &>
@end example
 The message "tty output" notwithstanding, the problem here is that
 ffmpeg normally checks the console input when it runs. The operating system
 detects this, and suspends the process until you can bring it to the
 foreground and attend to it.
 The solution is to use the right techniques to tell ffmpeg not to consult
 console input. You can use the
@url{ffmpeg.html#stdin-option, @code{-nostdin} option},
 or redirect standard input with @code{< /dev/null}.
 See FAQ
@ref{background task, @emph{How do I run ffmpeg as a background task?}}
 for details.
@chapter Development
@section Are there examples illustrating how to use the FFmpeg libraries, particularly libavcodec and libavformat?
@@ -601,7 +536,7 @@ No. These tools are too bloated and they complicate the build.
 FFmpeg is already organized in a highly modular manner and does not need to
 be rewritten in a formal object language. Further, many of the developers
 favor straight C; it works for them. For more arguments on this matter,
-read @uref{https://web.archive.org/web/20111004021423/http://kernel.org/pub/linux/docs/lkml/#s15, "Programming Religion"}.
+read @uref{http://www.tux.org/lkml/#s15, "Programming Religion"}.
@section Why are the ffmpeg programs devoid of debugging symbols?
--- a/doc/fate.texi
+++ b/doc/fate.texi
@@ -147,32 +147,6 @@ process.
 The only thing left is to automate the execution of the fate.sh script and
 the synchronisation of the samples directory.
@chapter Uploading new samples to the fate suite
 If you need a sample uploaded send a mail to samples-request.
 This is for developers who have an account on the fate suite server.
 If you upload new samples, please make sure they are as small as possible,
 space on each client, network bandwidth and so on benefit from smaller test cases.
 Also keep in mind older checkouts use existing sample files, that means in
 practice generally do not replace, remove or overwrite files as it likely would
 break older checkouts or releases.
 Also all needed samples for a commit should be uploaded, ideally 24
 hours, before the push.
 If you need an account for frequently uploading samples or you wish to help
 others by doing that send a mail to ffmpeg-devel.
@example
 #First update your local samples copy:
 rsync -vauL --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X fate-suite.ffmpeg.org:/home/samples/fate-suite/ ~/fate-suite
 #Then do a dry run checking what would be uploaded:
 rsync -vanL --no-g --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X ~/fate-suite/ fate-suite.ffmpeg.org:/home/samples/fate-suite
 #Upload the files:
 rsync -vaL  --no-g --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X ~/fate-suite/ fate-suite.ffmpeg.org:/home/samples/fate-suite
@end example
@chapter FATE makefile targets and variables
@@ -223,16 +197,6 @@ through @command{ssh}.
@item GEN
 Set to @samp{1} to generate the missing or mismatched references.
@item HWACCEL
 Specify which hardware acceleration to use while running regression tests,
 by default @samp{none} is used.
@item KEEP
 Set to @samp{1} to keep temp files generated by fate test(s) when test is successful.
 Default is @samp{0}, which removes these files. Files are always kept when a test
 fails.
@end table
@section Examples
--- a/doc/fate_config.sh.template
+++ b/doc/fate_config.sh.template
@@ -6,7 +6,6 @@ workdir=                                 # directory in which to do all the work
 #fate_recv="ssh -T fate@fate.ffmpeg.org" # command to submit report
 comment=                                 # optional description
 build_only=     # set to "yes" for a compile-only instance that skips tests
 ignore_tests=
 # the following are optional and map to configure options
 arch=
@@ -27,7 +26,5 @@ extra_conf=     # extra configure options not covered above
 #make=          # name of GNU make if not 'make'
 makeopts=       # extra options passed to 'make'
 #makeopts_fate= # extra options passed to 'make' when running tests,
                # defaulting to makeopts above if this is not set
 #tar=           # command to create a tar archive from its arguments on stdout,
                # defaults to 'tar c'
--- a/doc/ffmpeg-bitstream-filters.texi
+++ b/doc/ffmpeg-bitstream-filters.texi
@@ -26,12 +26,12 @@ bitstream level modifications without performing decoding.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavcodec.html,libavcodec}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavcodec(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-codecs.texi
+++ b/doc/ffmpeg-codecs.texi
@@ -23,12 +23,12 @@ the libavcodec library.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavcodec.html,libavcodec}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavcodec(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-devices.texi
+++ b/doc/ffmpeg-devices.texi
@@ -23,12 +23,12 @@ libavdevice library.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavdevice.html,libavdevice}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavdevice(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavdevice(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-filters.texi
+++ b/doc/ffmpeg-filters.texi
@@ -23,12 +23,12 @@ libavfilter library.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavfilter.html,libavfilter}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavfilter(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavfilter(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-formats.texi
+++ b/doc/ffmpeg-formats.texi
@@ -23,12 +23,12 @@ provided by the libavformat library.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavformat.html,libavformat}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavformat(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-protocols.texi
+++ b/doc/ffmpeg-protocols.texi
@@ -23,12 +23,12 @@ libavformat library.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavformat.html,libavformat}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavformat(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-resampler.texi
+++ b/doc/ffmpeg-resampler.texi
@@ -25,12 +25,12 @@ and convert audio format and packing layout.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libswresample.html,libswresample}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libswresample(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswresample(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-scaler.texi
+++ b/doc/ffmpeg-scaler.texi
@@ -24,12 +24,12 @@ image rescaling and pixel format conversion.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libswscale.html,libswscale}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libswscale(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswscale(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg-utils.texi
+++ b/doc/ffmpeg-utils.texi
@@ -23,12 +23,12 @@ by the libavutil library.
@chapter See Also
@ifhtml
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavutil.html,libavutil}
@end ifhtml
@ifnothtml
-ffmpeg(1), ffplay(1), ffprobe(1), libavutil(3)
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavutil(3)
@end ifnothtml
@include authors.texi
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
--- a/doc/ffplay.texi
+++ b/doc/ffplay.texi
@@ -12,7 +12,7 @@
@chapter Synopsis
-ffplay [@var{options}] [@file{input_url}]
+ffplay [@var{options}] [@file{input_file}]
@chapter Description
@c man begin DESCRIPTION
@@ -60,26 +60,12 @@ Play @var{duration} seconds of audio/video.
 see @ref{time duration syntax,,the Time duration section in the ffmpeg-utils(1) manual,ffmpeg-utils}.
@item -bytes
 Seek by bytes.
@item -seek_interval
 Set custom interval, in seconds, for seeking using left/right keys. Default is 10 seconds.
@item -nodisp
 Disable graphical display.
@item -noborder
 Borderless window.
@item -alwaysontop
 Window always on top. Available on: X11 with SDL >= 2.0.5, Windows SDL >= 2.0.6.
@item -volume
 Set the startup volume. 0 means silence, 100 means no volume reduction or
 amplification. Negative values are treated as 0, values above 100 are treated
 as 100.
@item -f @var{fmt}
 Force format.
@item -window_title @var{title}
 Set window title (default is the input filename).
@item -left @var{title}
 Set the x position for the left of the window (default is a centered window).
@item -top @var{title}
 Set the y position for the top of the window (default is a centered window).
@item -loop @var{number}
 Loops movie playback <number> times. 0 means forever.
@item -showmode @var{mode}
@@ -120,8 +106,8 @@ the input audio.
 Use the option "-filters" to show all the available filters (including
 sources and sinks).
-@item -i @var{input_url}
+@item -i @var{input_file}
-Read @var{input_url}.
+Read @var{input_file}.
@end table
@section Advanced options
@@ -133,9 +119,8 @@ This option has been deprecated in favor of private options, try -pixel_format.
@item -stats
 Print several playback statistics, in particular show the stream
 duration, the codec parameters, the current position in the stream and
-the audio/video synchronisation drift. It is shown by default, unless the
+the audio/video synchronisation drift. It is on by default, to
-log level is lower than @code{info}. Its display can be forced by manually
+explicitly disable it you need to specify @code{-nostats}.
 specifying this option. To disable it, you need to specify @code{-nostats}.
@item -fast
 Non-spec-compliant optimizations.
@@ -198,12 +183,6 @@ input as soon as possible. Enabled by default for realtime streams, where data
 may be dropped if not read in time. Use this option to enable infinite buffers
 for all inputs, use @option{-noinfbuf} to disable it.
@item -filter_threads @var{nb_threads}
 Defines how many threads are used to process a filter pipeline. Each pipeline
 will produce a thread pool with this many threads available for parallel
 processing. The default is 0 which means that the thread count will be
 determined by the number of available CPUs.
@end table
@section While playing
@@ -295,7 +274,6 @@ Toggle full screen.
@ifset config-avfilter
@include filters.texi
@end ifset
@include general_contents.texi
@end ifset
@chapter See Also
@@ -307,7 +285,7 @@ Toggle full screen.
@ifset config-not-all
@url{ffplay-all.html,ffmpeg-all},
@end ifset
-@url{ffmpeg.html,ffmpeg}, @url{ffprobe.html,ffprobe},
+@url{ffmpeg.html,ffmpeg}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-utils.html,ffmpeg-utils},
@url{ffmpeg-scaler.html,ffmpeg-scaler},
@url{ffmpeg-resampler.html,ffmpeg-resampler},
@@ -326,7 +304,7 @@ ffplay(1),
@ifset config-not-all
 ffplay-all(1),
@end ifset
-ffmpeg(1), ffprobe(1),
+ffmpeg(1), ffprobe(1), ffserver(1),
 ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1),
 ffmpeg-codecs(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1),
 ffmpeg-devices(1), ffmpeg-protocols(1), ffmpeg-filters(1)
--- a/doc/ffprobe.texi
+++ b/doc/ffprobe.texi
@@ -12,7 +12,7 @@
@chapter Synopsis
-ffprobe [@var{options}] [@file{input_url}]
+ffprobe [@var{options}] [@file{input_file}]
@chapter Description
@c man begin DESCRIPTION
@@ -24,8 +24,8 @@ For example it can be used to check the format of the container used
 by a multimedia stream and the format and type of each media stream
 contained in it.
-If a url is specified in input, ffprobe will try to open and
+If a filename is specified in input, ffprobe will try to open and
-probe the url content. If the url cannot be opened or recognized as
+probe the file content. If the file cannot be opened or recognized as
 a multimedia file, a positive exit code is returned.
 ffprobe may be employed both as a standalone application or in
@@ -208,13 +208,6 @@ multimedia stream.
 The information for each single frame is printed within a dedicated
 section with name "FRAME" or "SUBTITLE".
@item -show_log @var{loglevel}
 Show logging information from the decoder about each frame according to
 the value set in @var{loglevel}, (see @code{-loglevel}). This option requires @code{-show_frames}.
 The information for each log message is printed within a dedicated
 section with name "LOG".
@item -show_streams
 Show information about each media stream contained in the input
 multimedia stream.
@@ -252,7 +245,7 @@ continue reading from that.
 Each interval is specified by two optional parts, separated by "%".
 The first part specifies the interval start position. It is
-interpreted as an absolute position, or as a relative offset from the
+interpreted as an abolute position, or as a relative offset from the
 current position if it is preceded by the "+" character. If this first
 part is not specified, no seeking will be performed when reading this
 interval.
@@ -335,18 +328,12 @@ Show information about all pixel formats supported by FFmpeg.
 Pixel format information for each format is printed within a section
 with name "PIXEL_FORMAT".
@item -show_optional_fields @var{value}
 Some writers viz. JSON and XML, omit the printing of fields with invalid or non-applicable values,
 while other writers always print them. This option enables one to control this behaviour.
 Valid values are @code{always}/@code{1}, @code{never}/@code{0} and @code{auto}/@code{-1}.
 Default is @var{auto}.
@item -bitexact
 Force bitexact output, useful to produce output which is not dependent
 on the specific build.
-@item -i @var{input_url}
+@item -i @var{input_file}
-Read @var{input_url}.
+Read @var{input_file}.
@end table
@c man end
@@ -431,7 +418,7 @@ The @code{csv} writer is equivalent to @code{compact}, but supports
 different defaults.
 Each section is printed on a single line.
-If no option is specified, the output has the form:
+If no option is specifid, the output has the form:
@example
 section|key1=val1| ... |keyN=valN
@end example
@@ -477,7 +464,7 @@ Perform no escaping.
@end table
@item print_section, p
-Print the section name at the beginning of each line if the value is
+Print the section name at the begin of each line if the value is
@code{1}, disable it with value set to @code{0}. Default value is
@code{1}.
@@ -590,14 +577,14 @@ value is 0.
 This is required for generating an XML file which can be validated
 through an XSD file.
-@item xsd_strict, x
+@item xsd_compliant, x
 If set to 1 perform more checks for ensuring that the output is XSD
 compliant. Default value is 0.
 This option automatically sets @option{fully_qualified} to 1.
@end table
 For more information about the XML format, see
-@url{https://www.w3.org/XML/}.
+@url{http://www.w3.org/XML/}.
@c man end WRITERS
@chapter Timecode
@@ -648,7 +635,6 @@ DV, GXF and AVI timecodes are available in format metadata
@ifset config-avfilter
@include filters.texi
@end ifset
@include general_contents.texi
@end ifset
@chapter See Also
@@ -660,7 +646,7 @@ DV, GXF and AVI timecodes are available in format metadata
@ifset config-not-all
@url{ffprobe-all.html,ffprobe-all},
@end ifset
-@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay},
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffserver.html,ffserver},
@url{ffmpeg-utils.html,ffmpeg-utils},
@url{ffmpeg-scaler.html,ffmpeg-scaler},
@url{ffmpeg-resampler.html,ffmpeg-resampler},
@@ -679,7 +665,7 @@ ffprobe(1),
@ifset config-not-all
 ffprobe-all(1),
@end ifset
-ffmpeg(1), ffplay(1),
+ffmpeg(1), ffplay(1), ffserver(1),
 ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1),
 ffmpeg-codecs(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1),
 ffmpeg-devices(1), ffmpeg-protocols(1), ffmpeg-filters(1)
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Rick Kern	18ce5a4d1b	configure: use c++98 for c++ files Use c++98 standard instead of c++11. Signed-off-by: Rick Kern <kernrj@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit `729d82abae`) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	2016-06-26 23:27:22 +02:00
James Almer	cf09348b9e	changelog: fix entry order Signed-off-by: James Almer <jamrial@gmail.com> (cherry picked from commit `c6f2d1a21f`)	2016-06-26 15:28:16 -03:00
James Almer	970f2ad966	Update FFmpeg 3.1 cut marker Signed-off-by: James Almer <jamrial@gmail.com> (cherry picked from commit `069fd69662`)	2016-06-26 15:17:48 -03:00
James Almer	104c357b6a	Merge branch 'master' into release/3.1 Merged-by: James Almer <jamrial@gmail.com>	2016-06-26 15:14:17 -03:00
Michael Niedermayer	b2a74dd629	Set version to 3.1 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	2016-06-26 11:35:22 +02:00
Michael Niedermayer	182cfe4832	release notes (based on release/3.0) Better release notes are welcome write better ones or do not complain later! Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	2016-06-26 03:57:55 +02:00
Michael Niedermayer	e5d434b840	tests/checkasm/checkasm: Disable checkasm_check_pixblockdsp for ppc64be See: Ticket5508 Suggested-by: Carl Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	2016-06-26 03:56:11 +02:00
`@@ -1,2 +1 @@`
	`*.pnm -diff -text`	`*.pnm -diff -text`
	`tests/ref/fate/sub-scc eol=crlf`
		`@@ -0,0 +1,2 @@`
							`#!/bin/sh`
							`exec awk "BEGIN { for (i = 2; i < ARGC; i++) printf \"$1\", ARGV[i] }" "$@"`