Adobe After Effects - Manual (Page 85)

Note:
Note:
Start Timecode or Start Frame
Background Color
Anchor
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.
You cannot move custom composition settings presets from one system to another, as they are embedded into the preferences file.
To scale an entire composition, choose File > Scripts > Scale Composition.jsx.
Ensure all layers are unlocked in the selected composition or the script will fail.
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.
Christopher Green provides a script (Selected_Comps_Changer.jsx) on his website with which you can change the composition settings for
compositions selected in the Project panel.
Basic composition settings
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.
Use the color swatch or eyedropper to pick a composition background color. (See Select a color or edit a gradient .)
note: When you add one composition to another (nesting), the background color of the containing composition is preserved, and the background
of the nested composition becomes transparent. To preserve the background color of the nested composition, create a solid-color layer to use as a
background layer in the nested composition.
For information on specific Basic composition settings not listed here, see the related sections:
Pixel aspect ratio and frame aspect ratio
Frame rate
Resolution
Advanced composition settings
Click an arrow button to anchor layers to a corner or edge of the composition as it is resized.
For information on specific Advanced composition settings not listed here, see the related sections:
Specify resolution to use for rendering shadows
Preferences and composition settings that affect nested compositions
Motion blur
Advanced composition settings | CC, CS6
After Effects CS6 includes an updated advanced section to allow for ray-traced 3D renderer options. The 3D renderer plug-in has been renamed
as, "Renderer" for these choices because you are choosing one renderer or another for a composition.
To choose a composition type, select one of the following from the Renderer menu:
Classic 3D
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