Has anyone had this problem? While editing a video project, 
after about 10 minutes of events, some .avi files will only 
appear as audio in the timeline, no video. But if I start a 
new project, that same file will paste normally as video 
and audio. So there's nothing wrong with the file. I can 
successfully paste other files in my 10 minute project. 
When I preview that problem file, it says, "Video: stream 
attributes could not be determined". Anyone got any ideas? -
 John