[mythtv-users] DVD audio/video offset?

Bruce Smith brucesmith at chartermi.net
Mon Mar 15 13:50:36 EST 2004


I've managed to burn a DVD from a myth recored show with the script
someone posted, which basically does this:  (thanks to the poster(s)!)

  mpeg2desc -a0 < $1 > aud0 &
  mpeg2desc -v0 < $1 > vid0 &
  mplex -f 8 -V -o dvdmpg aud0 vid0 &
  dvdauthor -o $WORKDIR -f dvdmpg
  dvdauthor -o $WORKDIR -T

It plays fine, except the sound is slightly out of sync with the video.
The only way I notice it is watching people's lips while they talk, 
then it looks like the show is dubbed.  The show plays fine in Myth.

I've tried using tcmplex instead of mplex, and I've tried avidemux2 to
separate the steams instead of mpeg2desc, all with the same results.

I see there is a sync-offset parameter for the [tc]mplex programs, but I
know no idea what value to give it.  What offset value do other people
use when making DVD's from .nuv files?  Trial & error seems like a
rather lengthly process to figure this out.  :-)

Thanks in advance, BS




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