[mythtv-users] MacOSX frontend & 1080i

[Todd Ignasiak]

On 3/12/07, Andrew Gallatin <gallatin at cs.duke.edu> wrote:
>
> Is anybody able to play smooth, 1080i video using the MacOSX frontend?

1080i works well for me, on my 1.66GHz Core Duo Mac Mini + 720P DLP Display.

> After upgrading my Linux combined front/backend to 0.20-fixes, I
> decided to try the MacOSX frontend on my 2.16GHz Core2 Duo iMac with a
> Radeon x1600 (1680x1050 lcd).  I'm running the MacOSX binary from
> http://www.goof.com/~mmead/MythFrontend-MacOSXUniversal-0.20-fixes-20061001.dmg.bz2.
>
> Standard def, and 720p content works flawlessly, but 1080i has
> annoying jerkiness. The same 1080i files play flawlessly with vlc.  I
> have tried the hints in the Wiki, and have tried libmpeg2, etc, but to
> no avail.  The machine is 65-75% idle when playing 1080i, so I don't
> *think* CPU is the issue.
>
> One thing I've fixated on is the messages I find in the log when
> I enable verbose playback.  This is printed roughly 4 times per
> second:
>
> 2007-03-12 09:52:05.459 NVP: Video is 3.57936 frames ahead of audio,
>                         doubling video frame interval to slow down.

Have you tried changing the video playback settings?  I have "Use
video as timebase" disabled in my configuration.     Maybe also try
different de-interlacing settings to see the effect.