0 Replies Latest reply: Feb 4, 2013 1:22 PM by lizthesmith
lizthesmith Level 1 Level 1 (0 points)

I downloaded an MP4 file for a class assignment and only the audio plays from the file - no video.  Other MP4 files work fine for me, and I have checked with my peers who have also used this class video who claim they had no problem with it.  I am running the most updated version of Quicktime on OSX Lion.  Any thoughts on what could be wrong here?

MacBook Pro, Mac OS X (10.7.5)