Because your display is a "4:3" resolution in Windows, you'll probably need to use one of ffdshow's aspect options. If you know how large borders are for various aspect modes then you should be able to work out which to use
Panasonic TH42PX70
It's a 16:9 display, but the resolution is a standard 4:3 resolution, so you need to do correction for widescreen movies.
But your resolution on the widescreen displays aren't 1024x768 are they? You use 1680x1050 and 720x576 which are widescreen resolutions.
On a 1024x768 screen, your movie players will detect your display is 4:3 (because of the resolution) so the aspect ratio will be incorrect.
