I made a clip with premiere pro2. The clip is so dark! I have never had this problem but it IS the first time I was using top quality HD footage. Not sure this should be the cause. I expoted the 3 minute clip to wmv format, reducing the quality for upload but if you will take a look, mostly in the last 2 minutes at the dancing, it is so dark (some places in the dancing, you can see frames that the sides are all black!) and when I look at it on the premiere pro, it's so bright and normal, and there doesn't seem to be any color problem!

Here's the clip:

What could be wrong?

Thank you