On Tue, Aug 9, 2011 at 6:39 AM, Taneli Vähäkangas <taneli.vahakan...@cs.helsinki.fi> wrote: > > Hello. Thanks for your prompt reply. > > On Tue, Aug 09, 2011 at 08:35:27AM +0200, Johannes Truschnigg wrote: >> Given the system specs below, I'm afraid this is nothing out of the >> ordinary. H.264 in 1080p generally is quite demanding to decode, and >> your somewhat dated CPU just might not be up to the task. > > I'd like to use the GPU, it should be better suited for the task, > right? > >> You should try to get your hands onto a build of mplayer with the >> multithreading decoding features of ffmpeg enabled. I'm not sure that >> will yield real-time decoding of your video source, but it should >> improve performance a bit nonetheless. > > I'll take a look. > >> I distantly recall ATI/AMD implementing some GPU video decode >> acceleration API in their proprietary BLOB drivers, but I'm not sure how >> (or if, with your card) you can use that. > > I'll check out -- but I prefer open source. > >> The free drivers don't support video decoding with GPU hardware >> assistance yet. > > This, and this: > >> have to get a beefier machine if you don't want to wait for shader-based >> video decoding (or UVD) support in the free drivers. > > How much effort is that? How can I help? Where do I start? I'm no > stranger to driver development (in kernel), but have never worked > with X.org (or even XFree86) code.
There is initial shader based decoding for gallium drivers in the mesa git tree. At the moment it only supports MPEG1/2, but Christian is looking into support for newer codecs. Alex _______________________________________________ xorg@lists.freedesktop.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
