I use a Matrox G550 too and xine's drivers vidix / vidixfb keep the CPU
load low on normal channels (720x576). But with HDTV (1920x1080) the driver
runs into the mentioned hardware limitation. So I currently use xshm / fb
for HDTV where I'm not able to replay it fluently at 1920x1080 but just at
50 % of the original resolution (press "Alt+1" in xine).
If you are really interested in HDTV then try to find a card that is
supported by xine's xxmc driver (NVIDIA, as far as I recall).
Thank you very much for this explanation, I search for info about xxmc
in xine, but I can't find anything usefull... I have tried to go on
channel #xine on IRC without more success...
Could you tell me where I could find information about which cards
support what?