[mythtvnz] New Video Decode and Presentation API

[Neil Bertram]

David Zanetti wrote:
> <snip>
> I've tried with two of the samples on the geekzone.co.nz pages.
>
> There are apparently known frame sync issues, which may be the cause of
> some of the problems noted below.
>
> 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...

I guess there's no simple way to get the load level of your GPU though?

That said, this is very exciting!


Neil