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HT3775: Media formats supported by QuickTime Player

Learn about Media formats supported by QuickTime Player

HT3775 When I download a you tube MPEG4 I get the message:- youtube 2.mp4" could not be opened. The movie is not in a format that Quick Time understands  You may need to install additional software to open this type of file. What do I do now?

648 Views 12 Replies Latest reply: May 9, 2012 3:19 PM by babowa RSS
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When I download a you tube video that appears with a quicktime logo labelled MPEG4 it refuses to play. instead i get the message: -  YouTube.mp4” could not be opened. The movie is not in a format that QuickTime Player understands.You may need to install additional software to open this type of file.

What is that additional software?

iMac, iPad

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