1 Reply Latest reply: Jun 1, 2011 6:14 AM by Barry Hemphill
emilyfromcolumbus Level 1 Level 1 (0 points)

When attempting to play an mp4 file, I received this message:


The document “YouTube  *******.mp4” could not be opened. The movie is not in a format that QuickTime Player understands.


I thought QuickTime played mp4 formats. What gives?

iMac, Mac OS X (10.6.7)