[mythtv] 2019-devel: lipsync drift

[Mark Kendall]

John

Apologies for the delay - I've been away with the fairies for a few days:)

Can you please post full logs for the working and non-working cases?
The snippets are useful but I need the 101 other pointers that the
logs might give.

Given the nature of the problem, I'd suggest with  '-v playback,gpu
--loglevel=debug' logging.

If you want to go 'hardcore' as well  then add timestamp and audio
options - though the logs will be fairly lengthy:)

thanks and regards
Mark

On Mon, 25 Nov 2019 at 23:57, John Pilkington <johnpilk222 at gmail.com> wrote:
>
> On 24/11/2019 22:41, John Pilkington wrote:
> > To continue...
> >
> > I have a 'new' F30 box, i3 4-core with nVidia and a single VGA-driven
> > monitor, again running c794391ad. The only recordings at present are
> > from assorted iptv channels, but they show no obvious a/v drift.
> >
> > The DispRes: Desktop video mode on frontend startup and the DispRes:
> > SwitchToGUI on exit are both clean 1920x1080 60.000 Hz
>
> I commented earlier on the size of the timing StdDev shown in the
> terminal log when the Playback Data OSD is active.  It was around 25 ms,
> with a frame interval of 40 ms.  The SD appears to track the correction
> increment set for AVSync2, which suggests that a correction is being
> applied on every frame.  I had 30 ms, and now have 2 ms.  There is still
> a drift, though.
> >
> > John
>
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