[mythtv-users] 0.16: How to enable new vsync code and bob deint?

Doug Larrick dougl at charter.net
Mon Sep 13 10:41:12 EDT 2004

Thomas Börkel wrote:
> HI!
> I did not find this in the docs.
> How do I enable the new vsync code in 0.16?

You have no choice; it's enabled.  The old code is gone :-)

You may want to run 'mythfrontend --verbose playback', play a video, and 
take note of the timing method it's using:
* if you're using nVidia version <= 43xx, you should see nVidia timing
* if you're using nVidia version 53xx, upgrade!
* if you're using nVidia version 61xx, you should make sure to build 
with OpenGL vsync support (in settings.pro), and you should see OpenGL 
* I'm not sure who needs DRM timing, but if you used it before, it 
should continue to work
* Most others should see /dev/rtc timing.  If not, check permissions on 
/dev/rtc and the contents of /proc/sys/dev/rtc/max-user-freq (should be 
1024; if not, arrange for it to be so, probably with the 'systune' package).
* If you can't use any of the above for some reason, it will fall back 
to 'sleep with busy-wait,' which is actually not bad with a 2.6 kernel. 
  It consumes a little more CPU though, especially with a 2.4 kernel.

> How do I use the new bob deinterlacer in 0.16?

It's in the settings, in the same location as the old "Deinterlace 
Playback" checkbox was.  You enable deinterlacing, then choose a method.

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