Apple 7.2 Working with Tracks, Turning Tracks On or Off, Extracting, Adding, and Moving Tracks

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Working with Tracks

A QuickTime movie is made up of one or more “tracks.” Each track stores a particular kind of data. For example, a QuickTime movie could have a video track, music tracks, and sound effects tracks.

With QuickTime Pro, you can edit tracks individually. You can move tracks from one movie to another, turn a track on or off, delete tracks, or modify the information contained in a track.

Audio narration

Video 1

Video 2

Audio sound effects

Text title

Text credits

Turning Tracks On or Off

With QuickTime Pro, you can choose one or more tracks to enable or disable. For example, you might want to turn off tracks to simplify editing, or to hide a track in a final movie. When you export a movie, only enabled tracks are exported.

To turn movie tracks on or off:

1In QuickTime Player, choose Window > Show Movie Properties.

The movie’s tracks appear in the list at the top of the Properties window.

2Use the Enable checkboxes to turn tracks on (selected) or off (deselected).

To delete a track, drag it to the Trash, or select it and click Delete,.You can also choose Edit > Cut, or press the Delete key.

Note: For audio tracks, other options are available by clicking Audio Settings. To play only the audio in the selected track, select Solo. To play the movie without audio, select Mute.

Extracting, Adding, and Moving Tracks

With QuickTime Pro, you can create a new movie from one or more tracks of an existing movie, while leaving the original movie file intact. For example, you could create a movie that uses only the audio from an existing movie. To do so, you extract the desired tracks.

You can also add the extracted track to an existing movie.

Chapter 3 Editing and Authoring with QuickTime Pro