When I try to open some video files, they appear significantly darker than they should be. So far I've noticed it with .rm, .avi and .wmv. My .mp4 and .mov files seem to work fine. I don't know exactly how they're created, but the thumbnail images that appear in Windows Explorer for each file look fine, but when I play the file itself, it's darker than normal.
Another odd thing... I just bought Ulead Video Studio 10 and I was using it to turn a Dora the Explorer DVD into iPod compatible mp4 clips. While I was playing the videos in the editing window they were dark, but if I paused one, suddenly it was back to the correct brightness. I just tried this with some other .wmv files with similar results. Still frame images, bright; video playing, dark. That sounds like it should be a clue.
So that's what I've got. Since Ulead was the only totally new program I was running I uninstalled it just for kicks. Didn't do anything.
Other types of online video (youtube, Google video) work correctly.
I'm sure there's a good reason for this, I'm just not smart enough to figure it out myself. Also, please don't suggest I just crank up the brightness on my monitor and wear sunglasses unless I'm watching videos. I already tried that.