I have an old file that I'd really like to be able to watch again. Its an old file that was recorded from someone's webcam. The problem is that I know a long time ago that I thought there was a problem and I changed the FourCC. I recently found the file again, and it won't play because when I changed the FourCC I changed it to the wrong one.

Basically I'm wondering if there is a way to figure out based on the file what codec/FourCC was used? I don't have any sophisticated editing software or anything I'm just trying to watch this 2 minute clip again.

Any advice or help would be much appreciated. Thanks.