[linux-dvb] Re: Mplex doesn't work

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Henning Holtschneider wrote:
> 
> On Sat, 2 Jun 2001, Roland Praml wrote:
> 
> > > Does this happeen with _any_ recordings made with VDR 0.80pre7, or only
> > > with specific channels and/or programmes?
> >
> > I don't know, sometimes it happens, sometimes not.
> 
> Same thing here, sometimes it works, sometimes it doesn't. It doesn't seem
> to have anything to do with the recording or VDR's cutting mechanism.
> 
> Apart from that, the remuxed output file have remained useless for me so
> far, because the audio/vide delay "drifts" throughout the file and mplex
> only evaluates the a/v offset at the beginning of the file. So, in the
> beginning, everything is fine but the delay increases towards the end of
> the file.
> 
> I've been thinking about changing the behaviour of mplex so that it will
> constantly monitor the a/v delay and insert silence or drop frames (like
> PVAstrumento does under Windows) but my knowledge about MPEG streams is
> very limited. If anyone already has a solution for this problem, I would
> be glad to learn more about it ;-)

So would I, because I really would like to make VDR create 100% correct
recordings, without the need to remux them afterwards...

I wonder how it can be that the a/v offset "drifts" throughout a recording.
The original data that has been broadcast _must_ have been ok, because
otherwise the live signal would have to show these drifts, too, wouldn't it?

Is the increase of delay you are observing always in the same direction, or is
it random? 

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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