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convert video with ffmpeg

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Niels
2016-03-25 18:14:38 +01:00
parent 24e796dfdb
commit fcd569265b
1 changed files with 18 additions and 17 deletions
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33
veejay-current/veejay-server/doc/HowtoVideoCodecs.txt
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@@ -12,12 +12,12 @@ Veejay supports the AVI and the Quicktime container , with the following codecs:
Quicktime: Quicktime:
* mpjeg,mjpa,jpeg,dmb1 * mpjeg,mjpa,jpeg,dmb1,mpng,png
* dvsd, dv, dvcp, dvhd * dvsd, dv, dvcp, dvhd
AVI AVI
* mjpeg, mjpa,jpeg,jfif,dmb1 * mjpeg, mjpa,jpeg,jfif,dmb1,mpng,png
* dvsd, dv, dvcp, dvhd * dvsd, dv, dvcp, dvhd
* i420, i422, yv16, hfyu * i420, i422, yv16, hfyu
@@ -25,15 +25,9 @@ Raw DV
* PAL / NTSC dvsd * PAL / NTSC dvsd
Veejay can only deal with video files that consists entirely out of whole images (only I-frames). The codecs below will only work if all frames are I-frames. Otherwise, veejay will abort with an error message. Veejay can only deal with video files that consists entirely out of whole images (only I-frames).
AVI / Quicktime: Which codec to use ¶
* xvid, mp4v,divx,dxsd,mp4s,m4s2
* div3,mp43,mp42,mpg4
* avc1,h264,x264,davc,svq1,svq3,avc1
Wich codec to use ¶
MotionJPEG (mjpeg) is the veejay codec of choice for most applications, it gives you a good tradeof between compression, quality and compatibility. If you want speed, use AVI yv16 or i420 while recording to new samples. MotionJPEG (mjpeg) is the veejay codec of choice for most applications, it gives you a good tradeof between compression, quality and compatibility. If you want speed, use AVI yv16 or i420 while recording to new samples.
@@ -50,18 +44,25 @@ Wich resolutions to use ¶
Veejay can do: Veejay can do:
* high definition (use MLZO/YUV avi) * high definition
* pal: 720x576 (recommended to use MLZO/YUV avi) * pal: 720x576
* ntsc: 720x480 * ntsc: 720x480
* 1/4 pal: 360x288 (any) * 1/4 pal: 360x288
* 1/4 ntsc: 360x240 (any) * 1/4 ntsc: 360x240
If you load multiple video files on the commandline, make sure that all files have the same resolution and audio properties. If you load multiple video files on the commandline, make sure that all files have the same resolution and audio properties.
How to convert ¶ How to convert ¶
Veejay can convert dv video to mjpeg for you, however, I prefer to use mplayer for this, wich has more flexibility. You can use FFMpeg:
From "anything" mplayer can play to mjpeg, use: $ ffmpeg -i input-file -vcodec mjpeg -pix_fmt yuvj422p -q:v 0 output-file.avi
Optionally add PCM 16bit audio, 44.1/48.0 Khz, 2 channels, 8 bits per channel
ffmpeg -i input-file -vcodec mjpeg -s 128x128 -pix_fmt yuvj422p -acodec pcm_s16le -ar 44100 -ac 2 output-file.avi
Or, you can use mplayer:
$ mencoder -ovc lavc -oac pcm -lavcopts vcodec=mjpeg -o <outputfile> <inputfile> $ mencoder -ovc lavc -oac pcm -lavcopts vcodec=mjpeg -o <outputfile> <inputfile>