How can I get the m4v video stream from a mp4 avi file.
HI ,experts: 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. Thanks.
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.
RTFM. Hint "copy" codec.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ what's your meaning ? I can not catch up with you. Can you tell me the way in detail? On Tue, 17 May 2005 11:59:45 +0200 Erik Slagter <erik at slagter.name> wrote:
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.
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