On Fri, May 07, 2010 at 07:29:55AM +0100, Reimar D?ffinger wrote: > On Fri, May 07, 2010 at 02:15:08AM +0200, Giorgio wrote: > > >> While waiting for a better answer, have you tried a different vo? The > > >> following two commands work here: > > >> > > >> mplayer -quiet -demuxer rawvideo -rawvideo fps=10:w=2500:h=2000:y8 > > >> /dev/zero -vo gl > > > > > > As with Reimar, this one does not work (it shows a white screen instead of black - and still plain white instead of noise in case I replace /dev/zero by /dev/urandom), but gl2 does (not with the current debian-multimedia mplayer which shows some green screen, but with the latest svn revision)! > > > > Uhm, all three of them work here (gl, gl2 and x11) but the fastest one > > for me is gl, because both x11 and gl2 try to do colorspace conversion > > in software. > > gl2 does not "support" grayscale as input, that's just by accident though. Fixed, gl2 can now do grayscale, and as a side-effect both can do contrast/brightness adjustments and different scaling algorithms etc for it. They will do a pointless complete YUV->RGB conversion on the GPU though, I doubt that really matters though.
