I've never had this problem before in Movie Maker 2012 and I don't know if this is a familiar problem to any. But when I play my video before every clip theres a bright flash of light for a second in the start of a new clip or in the middle of a clip its bright for a second and then its back to its regular brightness. I don't change the brightness in my clips either. And some of the clips are from the same video. I don't know what it is but its a really distracting and makes the video look worse. It even happens to some clips that I've changed its speed. Some clips its even noticeable but some it doesn't even happen to, and its the only problem I really have. 

When I go to the clip and slide back and forth I don't even notice it, It just appears when I play the video. Should I link you to the video? Is this a minor problem to people who are familiar with this problem? Is there anything I can try to fix it?