Videoclip problem

I have little problem with my vids:

http://212.30.203.209/Mephz/Vesen%20me%f0%20gamma.avi

It´s so dam bright in my computer. Wondering what commands I should use to get rid of it. Tried lowering the gamma from 3 to 1 but didin´t get any luck must be another command.

btw: The floor ate em :<