HT3526: Adding additional media format support to QuickTimeLearn about Adding additional media format support to QuickTime
Currently Being ModeratedJan 11, 2013 6:07 PM (in response to Cassidy210)
Currently Being ModeratedJan 12, 2013 8:46 AM (in response to Cassidy210)
It means that QuickTime cannot play it. Download VideoLan for Mac & all your problems will be solved.
Here's a link: http://www.videolan.org/vlc/download-macosx.html