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    QuickTime 4: Customizing MIME type assignments for the QuickTime Plug-in
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    How do I change the file associations for some of the MIME types that are used by QuickTime 4 in my web browser? For instance, I have another plug-in that I want to use with .tif files rather than using QuickTime.

    You can select the MIME types you want the QuickTime Plugin to play in the QuickTime Plug-in Settings..

    1. When viewing a QuickTime movie that is displayed in a Web browser, click on the downward pointing arrow  and choose Plug-in Settings from the pop-up menu that appears. The arrow is available on the controller of any QuickTime movie that is displayed in a Web browser (Figure 1).

    Figure 1: Choosing Plug-in Settings.

    2. Click on the MIME Settings button (Figure 2).

    Figure 2: Plug-in Settings window.

    • Automatic Play. Some movies are set to start playing as soon as they are downloaded. You can choose to have all movies start playing automatically, regardless of how they were set up.
    • Disk Cache. You can choose to save movies in a disk cache. This improves performance if you plan to play a movie more than once.
    • Connection Speed. Optimize playing media over the Internet by choosing the speed at which your computer connects to the Internet. (This may be different from the maximum speed your modem can achieve.) If you've already set up the QuickTime Settings control panel, you won't need to set the connection speed again.
    • MIME Settings. You can select the MIME types you want the QuickTime Plugin to play.
    • Language Settings. If movies you view have alternate tracks for languages, you can choose the default language.

    3. Double-click to select and deselect MIME types. A plus (+) sign indicates a particular MIME type will be handled by the QuickTime Plug-in (Figure 3).

    Figure 3: QuickTime Plug-in MIME Settings window.

    Additional information about QuickTime Player can be obtained from the On-line QuickTime Player Help located at

Document Information
Product Area: Apple Software; Mac OS System Software
Category: QuickTime
Sub Category: QuickTime 4.x
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