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

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.

Regards,
R.

-- 
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