[vdr] Re: DVB-T appears to require PTS to demux (was: DVB-T based systems - does anyone have one that really is usable ?)

[Gregor Lawatscheck <gpel@mpex.net>]

At 15:25 13/05/2003, I wrote:
> > Trying playback with Mplayer yielded the same results as vdr trying to 
> > play it back: Sound for a second and then "hang". Looking at it with 
> > pvastrumento showed the first PTS (timestamp) to be at 4,5 seconds and 
> > gave a warning message about audio delay. After remuxing with 
> > pvsastrumento the stream now had the first PTS at the very beginning (10 
> > ms or so) and played back fine in vdr. Now for the interesting bit: The 
> > second of audio that could be heard from the broken stream before it died 
> > was actually at posititon 4,5 seconds! Now this really narrows this 
> > specific "blank screen" bug down to PTS handling I think.
Just to say - it cristallized that this "blank screen" bug is down to 
statistical multiplexing and corresponding headers in the PES stream.
I've posted about this over on the linux-dvb list:
http://www.linuxtv.org/mailinglists/linux-dvb/2003/05-2003/msg00191.html

This is the second time I blame PTS handling for nothing :) I guess it's 
only once it's implemented that I'll stop barking up the wrong tree.

- Gregor 


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