[mythtv-users] nvidia 8200 IGP + VDPAU no luck

[Daniel Agar]

On Wed, Jul 22, 2009 at 20:25, Zach C<uid000 at gmail.com> wrote:
> Hi,
>
> I've read a number of reports that seem to confirm that the 8200 IGP is
> sufficient for VDPAU decoding of HD h.264 material, such as that
> produced by the HD-PVR.
>
> I've had no luck with mine.
>
> When I play back 720p the video is smooth for about two or three
> seconds, then starts to stuttering and dropping frames.
>
> If I put a dedicated card in (9500 GT), playback is as smooth as butter.
>
> Is there any special build-time configuration that will help?  What
> about settings in the software, such as deinterlacer (shouldn't
> matter--720p), etc?
>
> My configuration:
> I've got a SFF Acer machine with an 8200 IGP,  Athlon LE-1600 and the
> maximum memory allocated to the GPU (512MB I think).
> I'm running trunk revision 20949
> I'm running on Mythbuntu 9.04 with the default mythtv packages removed.
> Nvidia drivers are 185.18.14
>
> Thanks for any tips
>
> Zach

I found the only way to get smooth playback with my 8200 IGP was to
set the scaling_governor to performance or disable cpu frequency
scaling altogether. For some reason the video would stutter when the
cpu scaled down to 1GHz even though the cpu usage would stay below
10%.