Sync and Video : Working with Video in Pro Tools : Playback of High-Definition QuickTime and Windows Media Video

Playback of High-Definition QuickTime and Windows Media Video
For more information, see the following topics:
Pro Tools lets you import and play back High-Definition QuickTime and Windows Media video files.
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When playing HD video through an Avid video peripheral (QuickTime only) or other device locked to a standard-definition video reference (such as a black burst generator), the display updates at the frame rate of the video reference.