[mythtv-users] First Time VDPAU Attempt - Questions

[Greg Hermsen]

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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>

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
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?

Thanks,
Greg