[mythtv] Slow Live TV Start

Harvard Pan harvardpan at gmail.com
Thu Jun 2 03:08:56 UTC 2005


I believe Isaac just checked in a fix from the ffmpeg cvs which resolves the 
long startup times. I tested it just now and it now takes less than 5 
seconds for live tv to start up. Thanks Isaac!

--Harvard

On 6/1/05, David Shirley <dave at cs.curtin.edu.au> wrote:
> 
> Hi All,
> 
> yes i too have noticed this.
> 
> I'm using DVB.
> 
> But I'm not using ffmpeg im using XvMC so im not sure if Harvard's comment
> below apply's (unless ffmpeg code gets initiated anyways??)
> 
> Cheers
> Dave
> 
> > I tracked the problem down to a the ffmpeg resync that was performed on
> > May
> > 22. The slowdown is in the code introduced in libs/libavformat/utils.c's
> > av_find_stream_info function. This is used by the OpenFile function in
> > AvFormatDecoder class which is used by the NuppelVideoPlayer class's
> > OpenFile. The opening of the file is what is taking 10-15 seconds.
> >
> > --Harvard
> >
> > On 6/1/05, Harvard Pan <harvardpan at gmail.com> wrote:
> >>
> >> Nope, I'm not using DVB.
> >>
> >> --Harvard
> >>
> >> On 6/1/05, Ashley Bostock <abostock at gmail.com> wrote:
> >> >
> >> > Using dvb here yes, didn't used to do it, just in a recent cvs.
> >> >
> >> > On 6/1/05, Adam Egger <adam.egger at gmail.com> wrote:
> >> > > Are you using DVB? I thought it's just a problem with my DVB card,
> >> > > because it takes twice as long to start LiveTV here with latest CVS
> >> > > builds, too. I also wasn't able to find out why the screen stays
> >> black
> >> > > for so much time.
> >> > >
> >> > > On 6/1/05, Harvard Pan < harvardpan at gmail.com> wrote:
> >> > > > Has anyone else seen a slowdown in startup of LiveTV? I just
> >> updated
> >> > to CVS
> >> > > > and it appears that it approximately 10-15 seconds for the TV to
> >> > actually
> >> > > > show up. Was going to debug it, but if it's already a known
> >> problem
> >> > and
> >> > > > someone is already looking into it, I wouldn't want to do double
> >> > work.
> >> > > >
> >> > > > Thanks,
> >> > > > Harvard
> >> > > >
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> >> > > >
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>
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