[mythtv-users] finding out if opengl vsync is enabled & refresh rate for bob deint

Thomas Börkel thomas at boerkel.de
Fri Sep 22 19:59:51 UTC 2006


Chris Martin wrote:

> What's the best way to find out if Myth is using the opengl vsync for
> timings.  I've checked the appropriate box under tv setup and get the
> following when I go to live tv.
> Video timing method: DRM
> The only thing is that  this appears if the opengl vsync box is ticked
> or not.  Does this imply that everything is working smoothly?

Do you have an ATI video card? I have one in my laptop and it uses DRM, 
too.  Which driver are you using? The open source ATI driver can not do 

> case bob deint fixed them perfectly.  If I turn bob deint on, however
> I get the following from Mythfrontend:
> Video sync method can't support double framerate (refresh rate too low
> for bob deint)
> What is the minimum refresh rate needed to do bob deint on a PAL

50 Hz non-interlaced.

> signal? and is it possible to use such a refresh rate with a VGA to
> Scart cable

I don't think so, but I'm not sure.


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