codec issue?

[mario1]

I have this weird problem. I'm using Windows XP and the latest codecs.

No matter what player I use, brightness level of videos is very very low. (wmp10, mp classic, divx -- mpg, avi, wmv). I've downloaded latest codecs from divx.

However, videos from Youtube are ok...

Is this a codec issue? Did I download wrong codecs?

Thanks.............