What are all the modules?

[Chris Jensen]

Hi,
There seems to be no reference as to what all the different output modules
are and what their advantages are, is this information available anywhere?
For instance I can only use the x11 module, but I've read suggestions to use
sdl or xvideo - what is the difference in how these modules access the video
hardware and how would these change the performance?
Similarly I would like to find out what the difference is with all the other
modules, eg yuv and yuvmmx.
Chris Jensen