[mythtv-users] playback not smooth regardless of source
mythtv.org at sethdaniel.org
Thu Mar 1 05:31:57 UTC 2007
On Wed, Feb 28, 2007 at 03:03:52PM +0000, Mark Kendall wrote:
> On 2/28/07, Seth Daniel <mythtv.org at sethdaniel.org> wrote:
> > A few observations:
> > - 1080i w/o deint is awful. No jitter as far as I can tell but other
> > problems that I don't really know how to describe.
> > - surprisingly to me 720p with Bob seems to work w/o issue. I recall
> > watching a ripped DVD at 720p a few weeks back (before I figured out
> > how to get my TV to 1080i) and it had the same jitter issues I have
> > seen recently. Now it seems to be fine. This time I tried a ripped
> > DVD and then watched some HD. No problems in the short time I watched
> > either of those.
> > - all tests were with openglsync enabled in the frontend.
> Mmmm - you might want to check openglvsync again. Both logs show that
> it isn't being used - are you sure it's compiled in? Though I wouldn't
> expect the setting to appear if it wasn't.
I think you are on to something here. I ran 'glxinfo' and it told me
that Direct Rendering was 'no' and it showed that it was pulling in the
MESA libs instead of the nvidia libs. So I re-installed the nvidia
driver and I did a few other things. Now glxinfo shows that Direct
Rendering is 'yes' and it pulls in the Nvidia libs.
I turned on playback logging and searched for anything 'gl' or 'GL'
related. I didn't find anything so I searched for 'sync' or 'Sync' and
didn't find anything then. What should I be looking for here? When I
turned on 'all' logging I found where Myth was looking for the
UseOpenGLVSync setting in mysql, but I found nothing else. mysql does,
in fact, say that this setting is '1'.
I may just be happy after a long but productive day at work but it seems
the 1080i playback with the DVD got better once I fixed the GLX
problems. It's not perfect, but better. Or so it seems.
seth / @sethdaniel.org
It always takes longer than you expect, even when you take
Hofstadter's Law into account.
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