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<div class="moz-cite-prefix">On 10/26/2014 6:25 PM, Greg Grotsky
wrote:<br>
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<blockquote
cite="mid:CAKL4i_rpLXyBnnVpROqg-APxU7981O-XWXwsYw3AFqmgJpww2A@mail.gmail.com"
type="cite">
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<div> So, I've noticed on my machine when I try to play a 720p
video it has a slight push-pull effect on the playback speed.
You can tell this when watching a section of video where the
camera smoothly pans across a scene, the smooth pan is... not
smooth. I can play the same video back with mplayer (using
VDPAU) and it works great and IS smooth.</div>
<div><br>
</div>
<div> I spent the afternoon googling about vdpau and video
timing trying to troubleshoot this issue but have come up
empty handed. Looking at my frontend log with -v playback I
can see that I'm running "Video timing method: RTC". I'd like
to try to get this to use DRM or DRI whatever but it never
budges. My video card is a Nvidia GT430 and I've seen options
in nvidia-settings for Vsync. So far I have tried:<br>
</div>
<div><br>
</div>
<div>1. Removing all deinterlacers</div>
<div>2. Disabling CPU Frequency scaling</div>
<div>3. Disabling GPU Frequency scailing</div>
<div>4. Playing with vdpaubuffersize in the filters option</div>
<div>5. Both settings for Vsync in nvidia-settings</div>
<div>6. Adding Option<span style="white-space:pre-wrap"> </span>"Composite"<span
style="white-space:pre-wrap"> </span>"Disable" to the
xorg.conf</div>
<div>7. Adding Option "TripleBuffering" "True" to the xorg.conf</div>
<div><br>
</div>
<div>I'm at a loss as to why it defaults to RTC, also my RTC is
set to 1024 but that doesn't seem to impact the playback
performance. It seems less likely that it's a problem with my
system/os and more like a mythtv setup/playback thing because
of the smooth playback of mplayer. :-/</div>
<div><br>
</div>
<div>I am open to all suggestions.<br>
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</blockquote>
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I too have a GT 430 and remember going through something similar. I
monkeyed with all the xorg.conf settings but in the end I think it
was a matter of making sure I had a recent Nvidia driver installed,
making sure /var/log/xorg.log showed VDPAU being loaded and, most
importantly, that VDPAU was selected in Myth's video playback
profile.<br>
<br>
My xorg.0.log:<br>
<br>
[286257.692] (II) NVIDIA(0): [DRI2] Setup complete<br>
[286257.692] (II) NVIDIA(0): [DRI2] VDPAU driver: nvidia<br>
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