[MPlayer-users] starting two video streams at the same time for 3D graphics.

[Matt Bettencourt]

I am not sure on that, however, what is your source??  If you have 
stills you can use imagemagick to do that then convert the resulting 
frames in mencoder.  If it is two movies then I don't know what to do 
from there.
Matt

Michael Johnson wrote:
> Can mencoder montage the frames?
>