[mythtv-users] First Time VDPAU Attempt - Questions

[Nick Rout]

On Sun, Feb 7, 2010 at 12:22 PM, Greg Hermsen <g.hermy15 at gmail.com> wrote:
> On Sat, Feb 6, 2010 at 2:40 AM, Richard Morton
> <richard.e.morton at gmail.com> wrote:
>> I am probably asking a stupid question, you do have the binary proprietary
>> nvidia drivers installed and enabled?
>>
>> All I had to do was enable the driver and set the playback profile.
>>
>> Look under system administration hardware drivers in gnome, not sure in xcfe
>>
>> R
>>
>> On 5 Feb 2010 23:57, "Greg Hermsen" <g.hermy15 at gmail.com> wrote:
>>
>> Hi,
>>
>> I'm running MythBuntu 9.10 and just purchased an Nvidia 9400GT card.
>> I looked at the VDPAU info at:
>>
>>   http://www.mythtv.org/wiki/VDPAU
>>
>> I think I need to recompile mythtv. It says...
>>
>> MythTV
>>
>>  ./configure --prefix=/usr --enable-proc-opt --disable-joystick-menu \
>>  --disable-firewire --disable-hdhomerun --disable-xvmcw --enable-xvmc-opengl
>> \
>>  --enable-vdpau  --disable-directfb --enable-opengl-vsync
>>
>> MythPlugins
>>
>>  ./configure --prefix=/usr --enable-opengl --enable-mytharchive \
>>  --disable-mythbrowser --disable-mythcontrols --disable-mythflix \
>>  --enable-mythgallery --disable-mythgame --enable-mythmusic
>> --disable-mythnews \
>>  --disable-mythphone --enable-mythvideo --disable-mythweather \
>>  --disable-mythzoneminder --disable-mythmovies
>>
>> Can somebody give me a little direction?  The above two references
>> look like compile parameters I need to put in a file.  If so, where
>> should it be located, and what should it be called?  What is the
>> command to compile?
>>
>> I'm running on a AMD 9350e quad core with 2 GB ram.  I'm using the
>> VDPAU Normal playback profile.  The video quality is very good, but my
>> four cores are running between 10-30% (concurrently).  I think VDPAU
>> must be running on my CPU instead of the 9400 GPU.  When I change my
>> playback profile to VDPAU High Quality, the video stutters.
>>
>> Any help is apprieciatd.
>>
>> Thanks,
>> Greg
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>>
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>>
>>
>
> I do have the proprietary Nvidia driver installed and enabled.  I'm
> not at my Myth system now, I think it was driver version 183 or 185.
>
> I do have "VDPAU Normal" selected in the playback profile.  What I'm
> not sure of however, is the video processing  being offloaded to the
> GPU.  From what I read, it looks like I might need to recompile myth
> with an option that would enable mythtv to offload the graphics
> processing to the GPU.
>
> I'm looking for:
> 1) confirmation that I do or do not need to recompile

No 9.10 comes with myth 0.22 which has vdpau enabled.

> 2) if I need to recompile, how do I do that?
> 3) feedback on my CPU observation.  While running mythtv the for cores
> are typically at something like 5%, 22%, 13%, 30%
>    * Does this suggest that VDPAU processing is likely being done my
> CPU instead of my GPU?


Hard to say, but look at the frontend log, it will tell you what is happening.

Also updating to the more recent 190 series drivers will probably give
better results.