[MPlayer-users] possible mplayer mpeg1 playback bug

[Giacomo Comes]

On Thu, Nov 10, 2005 at 10:06:47AM -0800, Alexandru Toma wrote:
> mplayer seems to have some problems with some mpeg files (get either
> chin1.mpeg or chin2.mpeg from http://www.maladroit.com/chin2/ ). It plays
> the video stream a lot faster than the audio stream, which is played at
> normal speed. As a result the video and audio get out of sync.
> 
> I have tried the following video codecs (with -vc) and all of them have
> this problem:
> mpeg12 (the default)
> ffmpeg1
> ffmpeg12
> 
> The strange thing is that ffplay (from ffmpeg) plays these videos just
> fine even if it plays them at double the resolution for some reason. The
> video and audio never get out of sync though.
> 
> I've also played those files on Windows with Media Player Classic (which
> uses codecs) and VLC Media Player for Windows (which doesn't use codecs
> but I don't know what library it uses for MPEG playback). Playback was
> flawless with both programs.
> 
> After that I also tried Xine and it played chin1.mpeg extremely jerky and
> chin2.mpeg a little jerky, but the important thing is that the video and
> audio tracks stayed in sync. I haven't yet tried VLC on Linux for various
> reasons but I suspect it would behave like the windows version.
> 
> Also, I don't know if it's useful, but the files (chin1.mpeg and
> chin2.mpeg) were created using Honestech MPEG Encoder 2.0 -
> http://www.divx-digest.com/software/honestech.html ... you can see that by
> looking in the files, just after the header.
> 
> I used mplayer-1.0pre7try2 and ffmpeg-0.4.9_p20050906 on Gentoo Linux.

Add -mc 1 and it will play in sync.

Giacomo