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  1. #1

    Member Since
    Jan 06, 2010
    QuickTime Issues
    I'm trying to play an MP4 file on QT but it gives me this message.

    The operation couldn’t be completed. (OSStatus error -12909.)

    So I called Mac Support and was told to download the Flip4Mac software, which hasn't solved the issue as well.

    I'm not sure what to do and I'm fairly new to MAC, so any help would be brilliant!

    Thanks Guys

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, High Sierra
    You may be missing a codec to play the file. Download and install the free Perian and try again.

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