Do the video players not use XvMC if it exists ?I haven't seen any player explicitly mention supporting it, but maybe they just keep it secret.
You're right, mplayer doesn't use XvMC, it's easy to find out since the library headers aren't included in the code.
Browsing threw mplayer and libmpeg2 code, I found the bit of code choosing Motion Compensation and iDCT acceleration methods. It's only choosing between MMX, and others proc specific instruction set, or mlib (which I found out is "Sun mediaLib, available only on solaris").
I haven't found a single project actually using XvMC, do you know any ?And will this extension actually use hardware acceleration, or will it just emulate it ? Is support for ATI cards implemented ?
Marc