[mythtv] TS mode FF/RW issues

Staffan Pettersson staffan.pettersson at sverige.nu
Sat Feb 19 23:12:46 UTC 2005


Citerat från Tim Davies <tim at opensystems.net.au>:

> I have had a look at this, and it seems to be either two things:
> 
> - TS streams with a separate PCR stream (ie. not the video stream), or
> - TS streams with a 27MHz clock (rather than 90kHz?)
> 
> As these are one and the same here (Perth, Aus) and I now don't have 
> time to look at it anymore, I didn't get any further!
> 
> The mpegts.c code seems to have functions to read separate PCR streams,
> 
> but only uses this if it detects the stream as raw.  I think this is 
> when it can't find any services in the SDT or PAT.  Which doesn't happen
> 
> for DVB.
> 
> As far as I know (and I haven't looked very closely at all!), the code 
> assumes a clock speed of 90kHz.
> 
> And that is where I got to...
> 
> Tim.
> 
> 
> Torbjörn Jansson wrote:
> 
> >>>I have problems with mpeg2 ts too from my dvb card.
> >>>The length of the show is too short, usualy a one hour show looks
> >>>like it is only a few minutes when seeking forward or backwards.
> >>>
> >>>When i seek forward it jumps forward by some large amout of time and
> >>>it seems to be different on different recordings.
> >>>      
> >>>
> >>I'm starting to suspect that something is broken in the keyframe
> >>detection in dtvrecorder. This could explain the slow live-tv startup
> >>and I think the ff/rw uses the keyframe index too, right?
> >>
> >>    
> >>
> >That's what i'm suspecting too, i tried to use mythcomflag to rebuild
> the
> >keyframe table, but that didn't do much.
> >
> >_______________________________________________
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> >mythtv-dev at mythtv.org
> >http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
> >  
> >
> 
> 

Hi

I just want to confirm the long livetv startup time in ts mode. It takes 15-20
secunds for livetv to start on my machine.

Best regars
Staffan



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