[mythtv-users] DVD audio/video offset?

Jay Love jsliv at jslove.org
Tue Mar 16 20:22:28 EST 2004

You might want to try replex from the dvb-tools package

It does the demux and remux internally and inserts the VOBU packets into
the mpeg.  I'm not having any sync problems.

So my process is just 

mkfifo dvdmpg
replex -tDVD -o dvdmpg $1 &
dvdauthor -o $WORKDIR -f dvdmpg
dvdauthor -o $WORKDIR -T
rm dvdmpg
growisofs -dvd-video -Z /dev/dvd $WORKDIR
rm -r $WORKDIR

It does cause dvdauthor to spit out a bunch of warnings, but it plays
fine on my dvd player.  Xine had some audio gaps using version 0.9, but
the version 0.1.0 that just came out makes xine happy as well.


On Mon, 2004-03-15 at 13:50, Bruce Smith wrote: 
> 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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