[mythtv] DVB

[Damon Searle]

> -----Original Message-----
> From: mythtv-dev-bounces at mythtv.org
> [mailto:mythtv-dev-bounces at mythtv.org]On Behalf Of matt jarvis
> Sent: Wednesday, 12 November 2003 8:23 AM
> To: Development of mythtv
> Subject: Re: [mythtv] DVB
>
>
> On Tue, 2003-11-11 at 20:37, Steve Davies wrote:
> > matt jarvis wrote:
> >
> > [snip]
> > >
> > > 2. When switching between channels on different muxes, I get glitchy
> > > video and audio, with flash frames and even the OSD glitching. This
> > > sometimes used to happen in recordings with the old code, but not in
> > > livetv. If I switch between channels again, it is sometimes
> possible to
> > > stop this.
> > >
> > > 3. I get some strange log messages when changing channels :
> > >
> > > Audiostream: Layer: 2  BRate: 256 kb/s  Freq: 48.0 kHz
> > > Videostream: ASPECT: 16:9  Size = 720x576  FRate: 25 fps  BRate: 6.50
> > > Mbit/s
> > > 2003-11-10 19:32:10 DVB#0 Setting KeyFrameDist to 10
> > > 2003-11-10 19:32:20 DVB#0 WARNING - Your frequency setting (481833330)
> > > is out of range. (min/max:0/0)
> > > 2003-11-10 19:32:20 DVB#0 WARNING - Status: NO LOCK!
> > > 2003-11-10 19:32:21 DVB#0 WARNING - Transport Stream Continuity Error.
> > > 2003-11-10 19:32:21 DVB#0 WARNING - Transport Stream Continuity Error.
> > > Videostream: ASPECT: 16:9  Size = 704x576  FRate: 25 fps  BRate: 4.00
> > > Mbit/s
> > > Audiostream: Layer: 1  BRate: 64 kb/s  Freq: 32.0 kHz
> > > 2003-11-10 19:32:22 DVB#0 Setting KeyFrameDist to 12
> > > 2003-11-10 19:32:33 DVB#0 WARNING - Unsupported inversion
> option 'auto',
> > > falling back to 'off'
> > > 2003-11-10 19:32:33 DVB#0 WARNING - Your frequency setting (505833330)
> > > is out of range. (min/max:0/0)
> > > 2003-11-10 19:32:33 DVB#0 WARNING - Status: NO LOCK!
> > > 2003-11-10 19:32:33 DVB#0 WARNING - Transport Stream Continuity Error.
> > > 2003-11-10 19:32:33 DVB#0 WARNING - Transport Stream Continuity Error.
> > > Videostream: ASPECT: 16:9  Size = 720x576  FRate: 25 fps  BRate: 6.50
> > > Mbit/s
> > >
> > > The NO LOCK messages are particularly strange,as it is
> definitely tuning
> > > the channel.
> > >
> >
> > Okay,
> >
> > I've exchanged some info with Matt off-list, and have re-built
> my DVB setup
> > clean, so I can test this properly. I have a similar
> environment to Matt, and
> > am now seeing the same problem as above.
> >
> > I do NOT see the frequency setting message, but everything else
> is basically
> > identical. Stuttery audio and video output, and even when it is
> smooth, the
> > audio is lagged. I THINK that the stuttering only happens on
> qam_64 muxes, and
> > the qam_16 sources are all perfect, and lip-synched. This may
> not be significant.
> >
> > I also noticed that if a problem channel is displayed first
> (straight from the
> > menu) it works okay, but if I change to it from another
> channel, chances are
> > that it will appear stuttery.
> >
> > Regards,
> > Steve
>
> Yep, that's exactly what I'm seeing. It's only in switching channels
> that you start to get glitches, and only across muxes ( although that
> also coincides with change from qam_16 to qam_64 in UK ). May well be a
> configuration issue though - I'm using Ed Wildgoose's settings, maybe Ed
> can confirm if he sees any of this with latest cvs ? I think he has the
> same Nova-T as Steve, with the Philips frontend, and he's on the same
> transmitter I think ...
>
>
> Matt
>
>

I'm getting a similar problem (Australia and Nova-T card). All channels are
qam_64, but I get the stuttering video and audio on only two channels. With
these two channels its the same situation as described above - changing to
the channel results in stuttering, going directly to the channel fixes that,
but the lip-synching is way off.

- Damon Searle