[mythtv-users] VDPAU playback on ION

[Richard Morton]

On 4 January 2011 21:47, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> On Mon, Jan 3, 2011 at 8:00 PM, Josu Lazkano <josu.lazkano at gmail.com> wrote:
>> Hello again, I have a Nvidia ION board connected to a 1080p TV with HDMI.
>>
>> I configure on the frontend to use "VDPAU Norma" profile, I have the
>> latest Nvidia drivers. I just select the HDMI on the "nvidia-setting"
>> and it works.
>>
>> But sometimes, when I am watching some 1080p videos or HD satellite
>> channels there are some pixels errors, I don't how to explain, but it
>> looks badly.
>>
>> How can I configure to get it best? On the "nvidia-setting" there are
>> lots parameter, but I don't know what they really mean.
>>
>> Thanks for all your help.
>>
>> Kind regards.
>
> ION requires VDPAU Slim as it cannot handle Advanced 2x for 1080i content.
>

Hi,

I dont think this is quite right. ION can handle VDPAU slim and normal
but not VDPAU High Quality. High Quality uses advanced 2x deinterlacer
for all content where as Normal uses temporal 2x for HD content to
prevent the GPU choking.

from wiki - http://www.mythtv.org/wiki/VDPAU:
VDPAU High Quality: use Temporal Spatial 2X (Advanced 2X) for all
content. To be used with nvidia cards >= 8600GT, >= 9500GT, GT120 or
>= GT220
VDPAU Normal: use Temporal 2X for HD content, and Temporal Spatial 2X
(Advanced 2X) for SD content. To be used with nvidia cards >= 8400, >=
9300, GT110 or >= GT210
VDPAU Slim: use Bob 2X with skip chroma option, with One Field as fall
back, to be used with nvidia cards >= 8200 or when VDPAU Normal
doesn't work for some reasons.

However, I have found with a Zotac ion A board that it requires two
DDR800 DIMMS installed to achieve this. The manual states that it is
preferable to install pairs of memory but doesnt make it any clearer
than that. I tried 1 x DDR800 and also 2 x DDR667 and this was
insufficient.

R