Editing avi's mpg's?

I was wondering if there is software to change brightness of contrast of
an Avi or Mpg file. I have some avi files that are good quality but dark, my Phillips 642 lets me change the brightness, contrast ect. but I was wondering if there is a way to do it with software?
TIA Mike

 

Maybe Movkit video converter can help you fix the problem.
It can let user adjust the brightness and contrast.
You can get more info from here
http://www.dvd-ripper-copy.com/other/Related-Products.html
i hope it is useful to you