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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:
* mpjeg,mjpa,jpeg,dmb1
* mpjeg,mjpa,jpeg,dmb1,mpng,png
* dvsd, dv, dvcp, dvhd
AVI
* mjpeg, mjpa,jpeg,jfif,dmb1
* mjpeg, mjpa,jpeg,jfif,dmb1,mpng,png
* dvsd, dv, dvcp, dvhd
* i420, i422, yv16, hfyu
@@ -25,15 +25,9 @@ Raw DV
* 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:
* xvid, mp4v,divx,dxsd,mp4s,m4s2
* div3,mp43,mp42,mpg4
* avc1,h264,x264,davc,svq1,svq3,avc1
Wich codec to use ¶
Which 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.
@@ -50,18 +44,25 @@ Wich resolutions to use ¶
Veejay can do:
* high definition (use MLZO/YUV avi)
* pal: 720x576 (recommended to use MLZO/YUV avi)
* high definition
* pal: 720x576
* ntsc: 720x480
* 1/4 pal: 360x288 (any)
* 1/4 ntsc: 360x240 (any)
* 1/4 pal: 360x288
* 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.
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>