Am 06.05.2012 23:53, schrieb Rogério Brito: > 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: > > http://lists.x.org/archives/xorg/2012-April/054484.html > > (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. >
The intel driver is just using ordinary textures for xv as far as I can tell. So, unless the hardware requires some specific setup for textures larger than 2048, it should just work with larger sizes. The hw limit for any DX10-capable hardware is at least 8192, so even a i965 chipset should handle that. You could try it out by compiling the intel ddx driver yourself, the limits are IMAGE_MAX_WIDTH/IMAGE_MAX_HEIGHT in intel_video.c. (Of course, the real fix would take the hw into account, 2048 seems indeed like the limit for i915.) Roland _______________________________________________ pkg-multimedia-maintainers mailing list pkg-multimedia-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers
