[mythtv-users] mythtv 0.24.2 and va-api with mplayer
jedi at mishnet.org
Thu Mar 1 19:41:19 UTC 2012
On Thu, Mar 01, 2012 at 11:31:44PM +1100, Christopher Kerr wrote:
> On Thu, Mar 1, 2012 at 11:13 PM, Kenni Lund <kenni at kelu.dk> wrote:
> > 2012/3/1 gacmb5 gacmb5 <gacmb5 at gmail.com>
> >> On 2012-02-29 22:34, Raymond Wagner wrote:
> >> > Why do you need VAAPI? A 2.5GHz SB i3 should handle just about any
> >> > video you want to throw at it in software. MythTV 0.25 currently
> >> > supports VAAPI, has for some time, and should be released in just over a
> >> > month. Should 0.25 be delayed, or VAAPI disabled or otherwise unusable
> >> > by you for whatever reason, you still have plenty of CPU in reserve that
> >> > it doesn't matter.
> >> Lower CPU usage means less heat and less noise.
> > ...less heat on the CPU cores while the higher GPU usage means more heat on
> > the GPU core...which in this case is integrated in the CPU :-P
> I'm pretty sure video decoding (not deinterlacing) is performed by a
> custom ASIC - yes, it's integrated into the die, but because it's
> single-purpose hardware I'd expect it to produce significantly less
> heat than a general purpose processor.
With ION kit, I have seen lower overall heat generation when using GPU video
acceleration versus using a comparable amount of computation on the CPU. Since
the GPU is specialized hardware, the idea that it would have to "work" less
hard is not surprising. I would expect Intel kit to be the same way.
Most efficient part doing what it's specialized to do.
Less heat overall.
Less need for cooling (active or passive).
More information about the mythtv-users