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Playing Copy-Protected Movies

QuickTime movies can be encrypted so that only authorized viewers can watch them. Such movies are known as "secured media files." To use such a file, you must enter a "media key," which is usually available from the media file provider.

To enter a media key:

  1. Choose Edit > Preferences > QuickTime Preferences.
  2. Click Advanced.
  3. Click Media Keys.
  4. Click Add and then enter the key provided by the author or vendor.