[linux-dvb] Re: Total sound loss during recording from ZDF.

[ma.hoff@bigfoot.com]

I doubt that this really fits the situation, but I once discovered that ZDF is one of those stations sometimes changing the sound format - but I guess not in the middle of a movie. So I once recorded "Nightmare" - which was horribly cut - but that's a different story :-) so they switched the sound format from 192kbit/s stereo to - I'm unsure maybe 128kbit/s MONO -  just at the beginning of the movie and at the end right back to normal 192 stereo.
Many Programs for editing PVA streams or mp2 streams crashed when coming across these boundaries :-)

Maybe it could be something like that...

I think you should analyze it further by demuxing the recorded file and checking audio and video seperately - and maybe "binary cutting" the recorded file after the loss of sound to check wether a demultiplex brings the audio back right after the loss point - understand ? What I'm trying to explain is:
Cut the file into pieces. Take a piece which has no sound (from behind the sound-loss-point). Demux it. Check if there is some audio or not... Maybe thats what I wanted to say :-)

I hope this helps...

Martin.


> ** Original Subject: [linux-dvb] Total sound loss during recording from ZDF.
> ** Original Sender: Carsten Koch <Carsten.Koch@icem.de>
> ** Original Date: Tue, 17 Apr 2001 19:53:01 +0200

> ** Original Message follows... 

>
> Has anyone else recorded the SF movie "Contact" (starring 
> Jodie Foster) from ZDF on 2001-04-16 at 02:05h?
> 
> My recording was OK for a little under one hour. 
> After that, the sound was completely gone and did 
> not return for the rest of the movie.
> 
> Can this be explained with the inevitable multiplexing
> problems Marcus described in an earlier post?
> 
> Why would the sound go away for good and not even return
> an hour later? I would expect these multiplexing problems
> to be of a more temporary nature?
> 
> If this cannot be explained with multiplexing problems,
> what other explanations are there? (driver bug? vdr bug?
> ZDF did not broadcast any sound after ~03:00 that night?)
> 
> Any suggestions welcome.
> 
> Carsten.
> 
> 
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> 




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