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Chapter 4. Compositions > Choosing Composition Settings

Choosing Composition Settings

Because compositions describe how layers are arranged in space and time, you must define a composition's spatial attributes (such as its frame size and pixel aspect ratio) as well as its temporal aspects (such as its duration and frame rate). Composition settings allow you to specify these characteristics. You can also use the composition settings to specify the resolution or quality of the Composition window's display. You may change composition settings at any time.

A project usually contains several compositions, most of which are contained as layers (or nested) in a final composition. Although you can set the final composition's settings according to your output format (NTSC DV, for example), you may want to employ different settings (particularly for frame size and duration) for intermediate compositions.

✓ Tips

  • You can open the Composition Settings dialog box for the current composition by selecting Command-K (Mac) or Ctrl-K (Windows).

  • You can also access the Composition Settings dialog box from the Timeline window's pop-up menu; however, using the keyboard shortcut—Command-K (Mac) or Ctrl-K (Windows)—is the quickest way.


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