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This abides by the ABI (no missing emms) and yields a tiny performance improvement here. Old benchmarks: avg_h264_qpel_8_mc12_8_c: 419.9 ( 1.00x) avg_h264_qpel_8_mc12_8_sse2: 78.9 ( 5.32x) avg_h264_qpel_8_mc12_8_ssse3: 71.7 ( 5.86x) avg_h264_qpel_8_mc32_8_c: 429.1 ( 1.00x) avg_h264_qpel_8_mc32_8_sse2: 76.9 ( 5.58x) avg_h264_qpel_8_mc32_8_ssse3: 73.4 ( 5.84x) put_h264_qpel_8_mc12_8_c: 424.0 ( 1.00x) put_h264_qpel_8_mc12_8_sse2: 78.6 ( 5.40x) put_h264_qpel_8_mc12_8_ssse3: 70.6 ( 6.00x) put_h264_qpel_8_mc32_8_c: 425.7 ( 1.00x) put_h264_qpel_8_mc32_8_sse2: 75.2 ( 5.66x) put_h264_qpel_8_mc32_8_ssse3: 70.4 ( 6.05x) New benchmarks: avg_h264_qpel_8_mc12_8_c: 425.7 ( 1.00x) avg_h264_qpel_8_mc12_8_sse2: 77.5 ( 5.49x) avg_h264_qpel_8_mc12_8_ssse3: 69.8 ( 6.10x) avg_h264_qpel_8_mc32_8_c: 423.7 ( 1.00x) avg_h264_qpel_8_mc32_8_sse2: 74.6 ( 5.68x) avg_h264_qpel_8_mc32_8_ssse3: 71.9 ( 5.89x) put_h264_qpel_8_mc12_8_c: 422.2 ( 1.00x) put_h264_qpel_8_mc12_8_sse2: 75.8 ( 5.57x) put_h264_qpel_8_mc12_8_ssse3: 67.9 ( 6.22x) put_h264_qpel_8_mc32_8_c: 421.8 ( 1.00x) put_h264_qpel_8_mc32_8_sse2: 72.6 ( 5.81x) put_h264_qpel_8_mc32_8_ssse3: 67.7 ( 6.23x) Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
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.