[vdr] Re: Re : VDR files to vob

[Rene Bartsch <rene@bartschnet.de>]

Am Son, 2002-07-14 um 11.04 schrieb Klaus Schmidinger:
> Carsten Koch wrote:
> > 
> > Patrick GUENEAU wrote:
> > ...
> > > The first few seconds of Video are sometimes without synced audio. Audio
> > > is missing or you can here distorted sounds.
> > ...
> > > I don't see this as a problem or a bug with VDR but (if it is only
> > > related to CAM) rather a bug with DVB driver and CAM handling.
> > 
> > That may be, but still it should be easy to work around in VDR.
> > VDR could do all the things (switch to the channel, start reading
> > the data from the card, etc.) 30 seconds earlier and just throw
> > these first 30 seconds away.
> > 
> > Just an idea. I have not investigated the first few seconds of data
> > recorded by VDR myself.
> 
> When VDR starts recording, it drops everything until the first I-frame
> and then begins saving the data. See the 'synced' variable in VDR/remux.c.
> 
> Since it must be possible to start replay at *any* point in a DVB stream
> (at least at an I-frame), I don't see what VDR should additionally do here.
> 
> Even if VDR would "throw away" the first 30 seconds (which is quite a long time),
> it would again face the same problem: start saving at the next I-frame.
> 
> Maybe I'm missing something here, but currently I don't see how this could
> be done differently. Besides, the DVB card replays VDR recordings just fine...
> 

The DVB does, but with other players (MPlayer, M$ MediaPlayer with
Elecard Plugin) you have green distortions at the beginning of EACH
VDR-file. Maybe it's the A/V-delay in PES-streams. What contradicts to
switch VDR to PS, which can be handled by nearly any player?

Rene