[MPlayer-dev-eng] Pixelformat negotiation

attila attila at pai.kinali.ch
Mon Jul 19 10:36:53 CEST 2004


On Thu, Apr 29, 2004 at 06:25:31PM -0400, D Richard Felker III wrote:
> On Thu, Apr 29, 2004 at 11:51:13PM +0200, Jiri Svoboda wrote:
> > Hi,
> > on directfb list was question why YV12 format is supported mga g200 by
> > mga_vid and not by vo_directfb. While digging in the logs and source I've
> > found following.
> > Support of YV12 on g200 in mga_vid is done in software by converting it to
> > YUV2 by the driver.
> 
> It's not converted to YUY2. It's converted to a format commonly known
> at NV12 (thanks to nvidia) or packed chroma planes. Unlike YUY2, it's
> no bigger than YV12. The luma plane is still independent while the
> chroma planes are packed together as one.
> 
> BTW, it's possible to optimize this heavily for direct rendering, but
> MPlayer doesn't...

While we are at this, can somebody please confirm whether
mga_vid still works with a G200 ?
It's been years since i replaced my G200 with a G550
(and got a 10% boost in performance)
Not to mention that i dont even have a G200 to test here
in japan

			Attila Kinali




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