Try the mplex -O option to fix these sorts of problems:
-O|--sync-offset num
Set the presentation timestamp offset of video stream w.r.t. audio stream (video-audio) in mSec.   This flag is used to produce a stream with synchronised audio/video when one stream started before/after the other.  This is common when transcoding as the synchronisation information is typically lost during the (seperate) decoding/encoding of audio and video.
To find an appropriate offset sync, you may find appropriate keys in both mplayer and xine to change the playback sync, and once found use this as your offset, (I find that mplayer takes a few minutes to settle down when the offset is adjusted where the "settling down" offset may be viewed in the terminal mplayer was run from...)

Pierre

Régis Guyomarch wrote:
Currently I don't want to edit the mpeg I just want to render an mpeg for dvd 
form a quicktime dv file. If I open the file with an other player ( mplayer ) 
the audio is not synchronized as well.

  
Hi Regis,
I had this problem, and developed a patch for it (see
https://init.linpro.no/pipermail/skolelinux.no/cinelerra/2005-December/0048
80.html ). but wasn't happy enough to apply it (see
https://init.linpro.no/pipermail/skolelinux.no/cinelerra/2005-December/0049
71.html ). as I am getting issues with video.

Currently I use the patch all the time, (note you'll have to re-make the
toc files!) as it fixes up the audio for all my mpeg returning the
correct number of frames.  But I don't know mpeg files well enough to
know completly the whole issue...

I personally see the libmpeg side of cinelerra fairly broken, though for
the mpeg that I edit, (from a Panansonic dvd recorder) it seems to work
so long as I don't play the last frame!  (because libmpeg writes in the
toc file that there is 1 more frame than actually is for the video I
use...)

If you/anyone could nut out what is going on I would really appreciate it!

Pierre

Régis Guyomarch wrote:
    
Hello,

 I'm trying to render a mov file in mpeg.

 I render a YUV4MPEG with mpeg2enc's DVD default settings.
 I render audio with Audio MPEG ( II 224 )

 I mplex the mpeg and the audio isn't synchronized anymore.

 If I load the mpeg in cinelerra I can see that the video has the write
duration ( 10 sec. in that test ) but the audio is longer ( 13.16 sec. ).
The part of the audio which is longer than the video is a silence.
The audio is about 0.5 sec late

Does anyone have an explanation about this ?

Thanks.

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