[MPlayer-users] Playing QHD (3840x2160) material with mplayer

Dominik 'Rathann' Mierzejewski dominik at rangers.eu.org
Thu Apr 17 15:15:38 CEST 2008

On Thursday, 17 April 2008 at 00:49, Dean S. Messing wrote:
> Reimar Döffinger wrote:
> > On Fri, Apr 11, 2008 at 01:54:04PM -0700, Dean S. Messing wrote:
> <snip>
> > > (1920x1080) uncompressed RGB at 60fps using the x11 driver.  The two
> > > CPUs sit at about 40%.  Interestingly, using the xv driver, the usage
> > > is quite a bit higher.
> > 
> > That is no surprise, xv (at least when using the default port) does not
> > support RGB (though I am surprised it works at all, my nVidia card can
> > only do at most a resolution of 2046 x 2046 with xv).
> You may have mis-understood me. The xv vs. x11 experiement I did above
> was for HD video (smaller than 2046x2046), not QHD.

I think Reimar understood that part correctly. Higher CPU usage with xv
output is a result of software conversion from RGB (your material) to YV12
(xv supported colourspace). X11 output supports RBG directly.

> Indeed, trying to use xv with QHD gets:
>    Source image dimensions are too high: 3840x2160 (maximum is 2046x2046)
> What do mean by the "default port"?

It is common for video cards to have one true overlay port and a number
of emulated overlays on other ports. See xvinfo output.


MPlayer developer and RPMs maintainer: http://mplayerhq.hu http://rpm.livna.org
There should be a science of discontent. People need hard times and
oppression to develop psychic muscles.
	-- from "Collected Sayings of Muad'Dib" by the Princess Irulan

More information about the MPlayer-users mailing list