Why can't I open .avi files, or .mvp files with Quicktime? Seems like sometimes, I can. Other times, I can't.
Why can't I open .avi files, or .mvp, or even .mpg files with Quicktime 10.0? Seems like sometimes, I can. Other times, I can't. I am using OS 10.6.8. Any suggestions?
iMac, Mac OS X (10.6.8)
