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
tpriester1
Level 1 (0 points)

Q: why won't quicktime play .mp4?

why won't quicktime play .mp4? I just downloaded a 1.2 gig mp4 video that won't play.

MacBook Pro, Mac OS X (10.6.8), What is the keyboard shortcut to re

Posted on Nov 26, 2013 11:05 AM