HT201290: If QuickTime Player can't open an audio or video file

Learn about If QuickTime Player can't open an audio or video file
kallie Petdancer
Level 1 (0 points)

Q: Can't run a movie with .mp4

My fried sent me a movie with a .mp4 extension.  It runs fine on his MacBook Air but won't run on my iMac.  My software is up to date.

Posted on Jun 5, 2013 3:59 PM