This is a video segment for a very long video I'm making. The day I saved this out and played it, it played and worked perfect. Then I reformatted, and I must've lost something I never knew I had in my computer. I downloaded my video clip again and it played normally in all Winamp, WMP, and DivX. But I can't seek back and forth in them on this video now? And it won't open correctly in Vegas or even Movie Maker. I need to somehow resave this video. It has to be possible, because it still technically play with sound and video.