[mythtv-users] VDPAU Current Status Report

Kashan Jafri kashan at gmail.com
Fri Jan 9 03:31:24 UTC 2009


On Thu, Jan 8, 2009 at 10:20 PM, Mark Kendall <mark.kendall at gmail.com> wrote:
> 2009/1/9 Kashan Jafri <kashan at gmail.com>:
>> Mark,
>>
>> I found that I had to increase the number of output surfaces in
>> util-vdpau from the default of 2 in order to get stutter-free playback
>> of 1080i MPEG2 on a 1080p monitor with any of the 2x hw deinterlacers
>> on my 9500GT. The default value of 2 was fine for the 1x
>> deinterlacers, but with any of the 2x ones (even bob) I was getting
>> dropped frames and messages saying the video was 3 seconds behind
>> audio. I increased it to 5 output surfaces and I now have perfectly
>> smooth playback (passes the ticker test) with advanced 2x hw deint. I
>> haven't bothered trying any other values, so lower ones may work as
>> well. NVIDIA recommends using more than 2 output surfaces for
>> performance reasons here:
>> http://us.download.nvidia.com/XFree86/Linux-x86/180.22/README/appendix-h-section-03.html.
>
> Thanks - I'd not spotted that. Is it new for 180.22? Some useful
> pointers and clarification on certain issues.
>
> Do you notice any audio sync issues with the extra surfaces?
>
> regards
>
> Mark
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It was just posted this morning with the new driver. Audio sync seems
fine to me after watching a 1 hour show.

Kashan


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