[Ffmpeg-user] How can I get the m4v video stream from a mp4 avi file.

On Tue, 2005-05-17 at 15:48 +0800, Chenweisi wrote:

I want to get the m4v video stream from the avi file , in which the video is mpeg4 and audio is mp3

How can I get the video part out and keep the same subjective quality? I think we need not to do the transcode and just split the video ES stream out is enough.

I try to achieve it but failed. I can get the audio part out.

The command I use is:

$ffmpeg -i test_0000.avi -s cif -f m4v -vcodec mpeg4 MVI_0000video.m4v

In this command, the video part is coded again by mpeg4 encoder and the quality degrades too much.

RTFM. Hint "copy" codec.