Some of the video is from an HD camcorder and some is from my Canon Point and Shoot. I edit the video in Pinnacle Ultimate which works beautifully. It even has a "Upload to YouTube" function which is great. The video plays perfectly but when I upload to YouTube, it plays for 3-4 seconds and the screen freezes. The video itself is still playing but the picture freezes. Really wierd. I have not run into something like this before. Frustrating.