[mythtv] 720p content constantly going in and out of sync

[Mark Buechler]

I get those as well. I'll have a look.

Thanks, Mark.

On 1/9/07, Stuart Auchterlonie <stuarta at squashedfrog.net> wrote:
>
> On Sat, Dec 30, 2006 at 06:12:47PM -0500, Mark Buechler wrote:
> > For a long as I've been using DVB support in MythTV (over a year), I've
> been
> > seeing a problem with many 720p streams constantly going in and out of
> sync,
> > ie:
> >
> > 2006-12-30 18:07:49.845 NVP: Video is 30 frames ahead of audio,
> >                        doubling video frame interval to slow down.
> > 2006-12-30 18:07:49.879 NVP: Video is 30 frames ahead of audio,
> >                        doubling video frame interval to slow down.
> > 2006-12-30 18:07:49.912 NVP: Video is 30 frames ahead of audio,
> >                        doubling video frame interval to slow down.
> > 2006-12-30 18:07:49.945 NVP: Video is 30 frames ahead of audio,
> >                        doubling video frame interval to slow down.
> > 2006-12-30 18:07:49.979 NVP: Video is 30 frames ahead of audio,
> >                        doubling video frame interval to slow down.
> >
>
> In an earlier thread from 2nd Dec entitled
> "Dynamic Ringbuffer and prebuffering pauses."
> I was discussing what if found in this area.
>
> If you have the problem I did, then you should see some messages
> before these like "Audio is xx.xxx behind, dropping ... to catch up."
>
> What is happening is the A/V sync is out, and NVP attempts to
> compensate, but "overshoots" such that the A/V sync is out the other
> way. So the resyncing code needs looking at, and Bruce put forward
> some useful suggestions in that previous thread.
>
> Stuart
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