[mythtv-users] So how much VDPAU is needed to do advanced 2x 1080i? specific recordings

[Steven Adeff]

On Mon, Mar 2, 2009 at 4:06 PM, Brad Templeton <brad+myth at templetons.com> wrote:
>
> Looking at the vdpau wiki page, I see conflicting results.
>
> Only one of the reports shows success with Advanced 2x on 1080i.
> And the reports are not clear.  They say they tried it on both 720p
> and 1080i sources, which does not help as 720p doesn't use any
> deinterlacer.
>
> One report with a 9400 onboard shows failure (that does not surprise
> me, onboard chips have memory bandwidth issues.)
> Another talks of occasional stuttering on a pcie g98 8400 but
> does not say with what source.
>
> Other reports give definite failure on an 8400gs for advanced 2x.
> They report success for Temporal 2x.
>
> The underlying processors are all listed as doing very low CPU,
> even an ATOM, so that doesn't seem to affect things.
>
>
> So...
>
>    It seems an 8400 is good enough for up to Temporal 2x?
>
>    What does it take to do Advanced 2x, and how much better
>    does it look?
>
>
> What about similar charts for opengl? I found my 7600gt
> did not seem to do opengl 2x deinterlacers without
> stutter.
>
>
>
> (Note, I sent this by accident to just Jean-Yves Avenard.  His report
> was that the 8600gt can do Advanced 2x but that the 8400gs and
> 9400gs (and probably 8500gt) can't do this, and are perhaps better
> with Advanced 1x or Temporal 2x which they can do.  Further updates
> are appeciated, especially on the wiki.)

I have a frontend with the 9300IGP chip and an Intel E5200
processor(see my wiki page) . Using Jean-Yves builds I have been able
to play 1080i OTA and cable recordings via firewire from my
cableboxen.

I have Advanced 2x set as my primary decoder and what is listed as
'vdpaubasic' in the database as the fallback deint. I haven't checked
to make sure it is *actually* using Advanced 2x or not, but it is
deinterlacing and I have not yet noticed and issues with it. I'm also
using VDPAU as the decoder. I've noticed a few downloaded h264 1080p
things don't play right (the video looks funny) but other than that
all my recordings seem to play perfectly and 'top' shows CPU usage
bounce between 0-7% for mythfrontend and 0-3% for X.

once I confirm things I'll update the wiki.

-- 
Steve
http://www.mythtv.org/wiki/index.php/User:Steveadeff
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