Hey guys, not sure how to describe whats happening. In short I'm trying to do a head swap/cover face sort of thing and it looks perfect in the preview and when I look at it frame by frame but when I render the video the mask shifts to the left, shoots all over the place, or I see the covered face come in and out like a strobe light. Not sure what I'm doing wrong, I moved the mask over the face frame by frame using pan/crop and I also tried it with the track motion option to no avail. If anyone knows the fix it would be highly appreciated. By the way I am using Vegas Pro 15.