[linux-dvb] Re: Question about PTS in TS

[Gregor Lawatscheck <gpel@mpex.net>]

At 17:23 14/05/2003, you wrote:
> Hi,
>
> often when parsing a TS coming from DVB drivers, I read an audio PTS
> roughly 4 seconds lower than the corresponding video PTS closest to it.
This is exactly what I am seeing here and it appears to make problems with 
demuxing some channels with new drivers / firmware on a av7110.

Are the streams you're seeing on this statmuxed (using VBR?) by any chance?

http://members.aol.com/mpucoder/DVD/pes-hdr.html might be helpful. In fact 
I'm looking at it myself at the moment to work out what pvastrumento fixes 
when it sets so called "VBR flags" to the PES header.

It's almost as if in the original header it indicates that there were no 
PTS when there actually is. It's almost as if ts2pes (code of which is 
employed in almostt all other apps outputting pes) writes b0rked headers or 
something - but too early to blame anything (and I tend to be wrong when I 
do anyway heh).

- Gregor 


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