On Tue, May 12, 2009 at 5:12 PM, Roman Haefeli <[email protected]> wrote:
> > > i see. thanks for the explanation. one reason, why i was thinking, that > gem doesn't use hw acceleration was that the cpu power used is quite > similar to the ones, when the same file is played by mplayer or vlc. but > according to what you say, it would probably be still impossible to play > 1080p with [pix_film] without hw accel. > I made many GEM based art works that played 4 1080 clips and recorded a live stream to disk all in real time. I think the problem you are having is the H.264 codec, which is intended for ultra-low data bandwidth applications. Switching to Apple Intermediate or one of the professional codecs (DVCPRO_HD or ProRes) will improve performance far more than trying to offload the 100:1 compressed H.264 to the GPU.
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