Here are some notes about SDL out in MPlayer.

There are several commandline switches for sdl:
-vo sdl:<name>	specifies sdl video driver to use (ie. aalib,
		dga, x11)
-ao sdl:<name>	specifies sdl audio driver to use (ie. dsp, esd)
-noxv		disables Xvideo hardware acceleration
-forcexv	tries to force Xvideo acceleration

SDL Keys:
F toggles fullscreen/windowed mode
C cycles available fullscreen modes
W/S mappings for * and / (mixer control)
N sets normal/double size

KNOWN BUGS:
- Keys pressed under aalib console driver repeat forever.
  It's bug in SDL, I can't change it (tested with SDL 1.2.1).

Please report problems or bugs with sdl out to the MPlayer-users
mailinglist.

-- 
Felix Bünemann, 2001-08-14