[mythtv-users] VAAPI on mythtv-0.26

[Joseph Fry]

On Fri, Apr 5, 2013 at 12:16 PM, Steven Adeff <adeffs.mythtv at gmail.com>wrote:

> On Fri, Apr 5, 2013 at 10:43 AM, Joseph Fry <joe at thefrys.com> wrote:
> >> is there a list of processors that work with VAAPI and "should" be
> >> fast enough for typical MythTV use?
> >
> >
> > Any Sandy or Ivy Bridge processor should work (the specs should say it
> has
> > INTEL HD graphics built in).  I am using a Sandy Bridge Celeron G540
> (just
> > about the slowest sandy bridge processor you can buy today) and it was
> > powerful enough for CPU playback... but VAAPI freed up the CPU for
> > comflagging and whatnot.
> >
> > In reality, if you have any sort of GPU acceleration (VAAPI, VDPAU, etc)
> > there isn't an x86 processor made today that is NOT fast enough.  Mythtv
> > doesn't use that much CPU unless your doing post processing (commflag,
> > transcode, etc).
>
> right, but not all GPU acceleration is made the same, the older cards
> were not capable of the support required for typical MythTV file
> playback, especially with deinterlacing taken into account.
>
> It's not the CPU speed I'm concerned with but the GPU
> speed/capabilities. If I go and buy a Sandy cpu with "INTEL HD", and
> connect it to my 1080p tv can I expect the quality of it's 1080i
> playback with deinterlacing to be on par with what I get from my
> NVidia GT220 in regards to CPU load reduction?


Ahh... now that is a completely different question than  "is there a list
of processors that work with VAAPI and "should" be
fast enough for typical MythTV use?"

I doubt that VAAPI would match a GT220 with Advanced 2X deinterlacing.  I
believe that VAAPI only supports BOB 2X and One Field... I read something
that suggests future cores may add additional de-int options?

I would say that VAAPI is ideal for secondary frontends... but I will stick
to VDPAU for my primary, big, living room TV where quality matters.
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