[BillMan]

How can I adjust the contrast for when I play movies with XBMC, the videos are really dark.
I do not see any options to adjust this. This should be a simple process.
Please help, thank you.

Yes, I know I can adjust on my TV, but than that ruins it for my video games and everything else I would do with it.

[Milhouse]

How can I adjust the contrast for when I play movies with XBMC, the videos are really dark.
I do not see any options to adjust this.

While playing a video (movie, tvshow, whatever) bring up the on screen display ("m" on a keyboard), select the video entry - the one to the left of the loudspeaker icon - and adjust the video settings to your liking, including contrast and brightness, then click on "Set as default for all videos".

This should be a simple process.

It is simple, in fact it's this simple.