[Openchrome-users] Anyone working on mpeg4, if so, I'd be happy to play 'tester'...

[Chad]

On 8/18/06, Ivor Hewitt <ivor at ivor.org> wrote:
> >
> > If you have some time over to do a test with VIA's driver it would be
> > really nice getting some CPU-usage figures both for HD and SD mpeg4
> > compared to openChrome's. If it turns out that accelerated mpeg4 really
> > makes a difference, it might jump on the priority list.
> >
> And remember the biggie..... it only accelerates h.263 NOT h.264.
> No-one is broadcasting hdtv in h.263

That is certainly odd...  Would that also remove any of the other
"mpeg4" codecs as well, such as xvid?  I'll be busy today learning
about h.263 I guess, thanks for this info.

> Secondly..... there seem to be very few chips with the mpeg4 accel.. not
> all of the unichrome-pro's have it. It seems specific to the CN400.
> So the combination of the fact that only a handful of boards will
> benefit from it and the limited usefulness of accelerating h263 anyway,
> mean the desire for spending that much time on it is reduced.

I too read about that information, but it seemed to include 1 other
chipset as well, IIRC it was the PT800???  I'll see about digging up
that document so I can accurately quote the other chip that benefits
from mpeg4 accel.  As for the h263, that is for the HDTV resolutions I
assume.  Does the mpeg4 accelerator also help out with non HDTV
resolutions on other codecs like Xvid or DiVX?

Thanks again for the fast replies!

-Chad