Bug#670236: mplayer2: can't play video with resolution of 2542x1080

Rogério Brito rbrito at ime.usp.br
Sun May 6 14:53:24 PDT 2012

Hi, Uoti.

On Apr 26 2012, Uoti Urpala wrote:
> This is a limitation reported by libXv. It's likely due to limitations
> of your graphics hardware. You can try other output methods such as gl,
> but it's likely they won't work well either on such hardware.

Yes, I just went to read the code and I came to the conclusion that it was
some limitation reported by Xv and I, then, sent an e-mail to the xorg
mailing list:


(I'm including the xorg list here in CC).

As Alex Deucher said there, it is a little bit strange that even a Sandy
Bridge notebook has this limitation of playing only 2kx2k videos (which is
the same that my 865 has).

Just curious: what hardware do you use?

> Using --xy=0.5 won't help, because that will try to do the scaling in
> hardware, but the limitation is about hardware input image size. You can
> force software scaling on CPU with options like "--vf=scale=1920:-2".
> This would add a filter to do software scaling to a width of 1920 and a
> height that keeps the original aspect ratio, which should fit within the
> limitations of your hardware. You may want to adjust the value of 1920
> if you have a monitor smaller or larger than that.

OK, that's a reasonable workaround for the moment.

I guess that this bug may be reassigned, then, but I'm not sure if that
should be to xserver-xorg-video-intel or any other package.

In the mean time, it would be nice to hear from the Intel people working
with X (perhaps Keith Packard?) if those limitations are there just for
being hardcoded or if the hardware has that limitation itself.


Rogério Brito : rbrito@{ime.usp.br,gmail.com} : GPG key 4096R/BCFCAAAA
http://rb.doesntexist.org/blog : Projects : https://github.com/rbrito/
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