AV Sync problem when resampling AVI

From: John Scudder (jscudder_at_verizon.net)
Date: 04/13/05 

Date: Wed, 13 Apr 2005 01:01:44 GMT

Using transcode/mplex to convert AVI video files to MPEG4 for making a
DVD usually works very nicely, but I have a few AVI videos with the
audio at 44100 hz that are giving me problems. For these files I enable
the -J resample option in transcode to convert the audio to 48000 hz.
The videos are approximately 350 MB. This resampling proceeds with out
any error messages, but the resulting MPG file is less than perfect.....

At the beginning of the newly made MPEG4 video the audio and video are
in sync. As the video plays the AV sync gradually drifts apart. By the
end of the video, the AV sync is several seconds off. If I use
transcode without the -J resample option, the AV sync is fine through
out the video, but then the audio is still at 44100 hz and it will not
work with dvdauthor.
What can I do to keep the AV in sync at 48000 hz??

John

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