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

Dominik 'Rathann' Mierzejewski dominik at rangers.eu.org
Fri Apr 11 00:26:51 CEST 2008

On Friday, 11 April 2008 at 00:01, Dean S. Messing wrote:
> I am trying to play uncompressed rgb QHD material with mplayer.  After
> modifying transcode to handle QHD, I was able to generate an .avi from
> the .png frames of the video.  I can play them with mplayer using 
> "-vo x11" but only at about 14fps.  I need to play at 24fps.
> When I use the xv output driver, I get the Transcript below.  Is it
> straightforward to increase the accepted dimensions of the xv output
> driver in the mplayer source code?

It's not a limitation of MPlayer. It's a limitation of the driver for your
graphics card or even a limitation of the card itself (video overlay size).

You could try using -vo gl:yuv=X with various X values or -vo xvidix (see
man mplayer), but there are other limiting factors as well. I mean, we're
talking 4.7Gbps (570MB/s) of data here. A decent PCIe 2.0 card can handle
that (even with one lane), but the limiting factor is the storage. So
unless you're playing from a RAM disk or a 10Gb network (even an SSD drive
is too slow), you won't be able to play it in real time. And I'm not
counting the decoding time here.


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

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