[mythtvnz] New Video Decode and Presentation API

David Zanetti dave2 at wetstring.net
Wed Nov 19 03:32:20 GMT 2008


On Wed, 2008-11-19 at 16:10 +1300, Neil Bertram wrote:
> David Zanetti wrote:
> > 720p Freeview|HD sample loop looked okay, but was consistently a slow
> > framerate against disabling VDPAU. CPU wise, 1-3% with, 60-80% without.
> >
> > 1080i TV3 did not look interlaced, but was consistently at least half
> > framerate whether VDPAU was on or off. Harder to judge if when it was on
> > it was more slow (like the 720p clip). CPU wise, 1-2% with, 50-60%
> > without.
> >
> > (Given it was half framerate, I'd wager doubling those figures..)
>
> Is it likely that the performance of this acceleration is dependent on
> the card/GPU you've got? I imagine the GPU still has a finite capacity
> to decode H264, especially as it might have to be doing other things
> like rendering/scaling the actual output too...

Possible, tho it seemed okay even with compiz still enabled. But I
should try it with compiz disabled, in case that's causing the problem.

An 8600GT should be more than fast enough to do it given the other
"supported" chipsets.

-- 
David Zanetti <dave2 at wetstring.net>
http://hairy.geek.nz/
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