[Spice-devel] Streaming video performance concepts

Alon Levy alevy at redhat.com
Wed Jun 22 08:01:54 PDT 2011


On Wed, Jun 22, 2011 at 09:56:28AM -0400, John A. Sullivan III wrote:
> On Wed, 2011-06-22 at 11:27 +0200, Alon Levy wrote:
> > <snip>> Thank you very much for the explanation.  It's pretty much what I
> > > expected - that the codec is different, trading CPU efficiency for
> > > bandwidth inefficiency and I certainly understand the reasons why.
> > > 
> > > Is there any thought or plan to make the codec configurable for those
> > > who are willing to sacrifice CPU for bandwidth, e.g., VP8, Theora, or
> > > H.264?
> > > 
> > 
> > I haven't done any testing on this but I think the cpu requirements are large.
> > maybe with hardware doing the encoding this would work well enough. Technically
> > just dropping in a different codec and extending the protocol doesn't sound like
> > a lot of work. Patches welcome?
> <snip>
> I wish I had the skill set to help in that way! Thanks - John
> 
Would you be able to provide some benchmarks (choose some pc you have) for:
 encoding speed of
  VP8, Theora, H.264
 for various bitdepths and resolutions (you choose, maybe just one - take the resolutions
 of a normal youtube window and a fullscreen of your choice).
?

Alon



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