On Tue, Mar 09, 2010 at 11:31:24AM -0300, Manuel Barros Reyes wrote: > and I believe this causes the video to distort when an animation > scrolls fast horizontally from one display to the other. It gets like > a little horizontal cut no the middle. I am using vo = x11 which I > believe is quite inefficient, I am just guessing cause I couldn't try > it with other output driver except opengl which is similar though. Probably your graphics driver can't sync to more than one display. Maybe there are tricks to avoid this issue with your drivers, if not probably nothing short of using a different PC for each display will help.
