Fullscreen in Mplayer

[Dotan Cohen]

According to the 'man', one should be able to toggle the mplayer size
with command-1,2,3,4 and achieve fullscreen with command-f. Assuming
that 'command' is the Ctrl key, then Ctrl-F does in fact make the
player window full screen, however the video stays the same size.
Thus, I have a mostly-black screen. Ctlr-1,2,3,4 do nothing, however.

Am I assuming incorrectly? Neither the Tux key nor the Alt key modify
the window when pressed with F, thus I assume that the command key is
Ctrl.

Thanks in advance for any solutions.

Dotan Cohen

http://lyricslist.com/lyrics/artist_albums/247/harrison_george.html
http://etycohen.com