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Composition settings
You can enter composition settings manually,
or you can use composition settings presets to automatically set
frame size (width and height), pixel aspect ratio, and frame rate
for many common output formats. You can also create and save your
own custom composition settings presets for later use. Resolution, Start
Timecode (or Start Frame), Duration, and Advanced composition settings are
not saved with composition settings presets.
Note: The limit for composition duration is three hours. You
can use footage items longer than three hours, but time after three
hours does not display correctly. The maximum composition size is
30,000x30,000 pixels. A 30,000x30,000 8-bpc image requires approximately
3.5 GB; your maximum composition size may be less, depending on
your operating system and available RAM.
Working with composition settingsTo open the Composition Settings dialog box to change composition
settings, do one of the following:
Select a composition
in the Project panel or activate the Timeline or Composition panel
for a composition, and choose Composition > Composition
Settings, or press Ctrl+K (Windows) or Command+K (Mac OS).
Right-click (Windows) or Control-click (Mac OS) a composition
in the Project panel or Composition panel (not on a layer), and
choose Composition Settings from the context menu.
To save a custom composition settings preset, set Width,
Height, Pixel Aspect Ratio, and Frame Rate values in the Composition
Settings dialog box, and then click the Save button  .
To delete a composition settings preset, choose it from the
Preset menu in the Composition Settings dialog box, and click the
Delete button  .
To restore default composition settings presets, Alt-click
(Windows) or Option-click (Mac OS) the Delete button or
the Save button in
the Composition Settings dialog box.
To scale an entire composition, choose File > Scripts
> Scale Composition.jsx.
Jeff Almasol provides
a script on his redefinery website to set the frame
rate and duration of the current composition and all compositions
nested within it.
Basic composition settingsFor information
on specific Basic composition settings not listed here, see the related
sections.
- Start Timecode or Start Frame
- Timecode or frame number assigned to the first frame of the
composition. This value does not affect rendering; it merely specifies
where to start counting from.
Advanced composition settingsFor information
on specific Advanced composition settings not listed here, see the
related sections.
- Anchor
- Click an arrow button to anchor layers to a corner or edge
of the composition as it is resized.
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