[vdr] Re: A/V syncing in DVD replay

["Jean-Claude REPETTO" <jrepetto@francenet.fr>]

----- Original Message -----
From: Jean-Claude REPETTO <jrepetto@francenet.fr>
To: <vdr@linuxtv.org>
Sent: Monday, November 05, 2001 12:29 AM
Subject: [vdr] Re: A/V syncing in DVD replay


>
> ----- Original Message -----
> From: Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>
> To: <vdr@linuxtv.org>
> Sent: Sunday, November 04, 2001 12:35 AM
> Subject: [vdr] Re: A/V syncing in DVD replay
>
>
> > Jean-Claude REPETTO wrote:
> > >
> > > ----- Original Message -----
> > > From: Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>
> > > To: <vdr@linuxtv.org>
> > > Sent: Saturday, November 03, 2001 12:40 PM
> > > Subject: [vdr] A/V syncing in DVD replay
> > >
> > > > I have uploaded a pre-release of VDR 0.98 to
> > > >
> > > >   ftp://ftp.cadsoft.de/pub/people/kls/vdr/vdr-0.98pre2.tgz
> > > >
> > > > which, amoung other fixes, contains this change to DVD replay.
> > > >
> > > > I would appreciate if those amoung you who have a DVD drive
installed
> > > > in their VDR machine could run tests with this version, and see
> whether
> > > > audio and video (replayed via the DVB card's A/V out!) are ok. There
> > > > might be DVDs out there with A/V multiplexing different than the
ones
> > > > I had available for testing. If you have a DVD where audio/video
> replay
> > > > is broken or out of sync, please let me know.
> > >
> > > I have tested "Les visiteurs 2" and "The Corrs live at landsdowne
road".
> The
> > > sound stays in sync with the video, but the video is jerky, about
twice
> per
> > > second.
> >
> > So I take it that the audio is running smoothly (no chirping or
> interruptions),
> > but the video is not, right?
>
> That's exactly was I am seeing.
>
>
> > When the video "jerks", do you have the impression the a few frames are
> shown
> > "faster" than normal (which would indicate that the video catches up
with
> the audio)
> > or does it seem like some frames are shown "slower" than normal (which
> would mean
> > that the video "waits" for the audio to catch up)?
>
> Yes, it seems that some frames are missing. The video is faster than
normal.
> BTW, I am using libdvdread 0.9.1 and DVB driver from CVS 21 Sep 2001.
>
> There is the same problem in VDR 0.98 final.
> In VDR 0.97 the video was OK.
>

A precision : the video is jerky only with AC3 sound, not with LPCM sound.
May be this can help !

Jean-Claude