[mythtv-users] dvb-tv: recording looks good but live tv looks bad

Frank Visser frank.visser at gmail.com
Sun May 15 11:21:49 UTC 2005


On 5/15/05, Nick <knowledgejunkie at gmail.com> wrote:
> On 5/15/05, Michael Carland <mcarland at bitsgonewild.net> wrote:
> >
> > On May 14, 2005, at 9:13 PM, Frank Visser wrote:
> >
> > > Hi all,
> > >
> > > MythTV is almost perfect for me now, but I am running in a small
> > > wierdness. Sometimes the channel is bad quality when watching live tv,
> > > but when I record it using the 's' key and switch over to look at the
> > > recording the quality is good!
> 
> What esactly is bad about the picture quality? Is it lower resolution,
> skipping, bad colours?

The picture is blocky, the sound disappears or is badly distorted, and
sometimes it skips. It is basically unwatchable, which makes it
strange that recording gives such good results.

> >
> > The easiest answer would be if you have different settings for
> > 'Default' and 'Live TV' in your recording profiles.

I will check the settings pages to see, but I don't remember changing them.

> 
> This shouldn't make a difference with DVB (unlike a hardware capture
> card) as the stream is recorded 'as is', unless the profile is trying
> to resize the live video on-the-fly to a non-native resolution. I
 
I will check this, but I don't think I am doing this,. And anyway, my
machine is reasonably high end (AthlonXP2800), so that shouln't cause
the problem either.

> would use verbose logging output on the frontend and see if there are
> any useful messages whilst watching live tv. You should see with DVB
> stream info in the log, so that might show something.

OK, wll switch on verbose, and see what happens.
> 
> Nick


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