Re: Geforce FX 5200, 1080i video, and 800x600 screen
mplayer always assumes 4:3 aspect ratio. Why? I don't know why. It just does.
So the correct command to play on a 16:9 resolutions would be:
mplayer -ac hwac3 -ao alsa -zoom -fs -monitoraspect 16:9 /video/sample.mpg
Without the monitoraspect switch, it would look wierd. Kinda like what you are describing.