mplayer + .lrcrc

[Lee_Machine]

does anyone now what the config command is to change or toggle the aspect ratio with mplayer in the .lircrc config file?

ie

begin
prog = mplayer
remote = panasonic
button = Aspect
config = ?
end

In Xine its config = ToggleAspectRatio

No where can I find it for mplayer!

Thanks,