Adobe After Effects CC Classroom in a Book (2019 Release), First Edition

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type Toggle on the image you want to use.
16. Drag the comment to the top of the Background images group, and then drag the
Background images group above the Background effect group.

Now the template controls are tidy and easy to understand.


17. Select one of the checkboxes to display a default background image.
18. Hide the properties for all layers in the Timeline panel, and then choose File > Save to save
your work so far.

Protecting the timing of a section


The Responsive Design features in After Effects and Premiere Pro let you author adaptive
motion graphics. The Responsive Design – Time feature, specifically, preserves the duration of
time in a particular region of a composition in a Motion Graphics template while enabling time
stretching in unprotected regions. You can preserve the timing of specific areas in compositions
you export as Motion Graphics templates or in nested compositions within After Effects.


You’ll protect the duration of the episode title’s transition. That way, an editor in Premiere Pro
will be able to shift the timing of other areas, such as shortening the time before the text
explodes, but speeding up or slowing down time elsewhere won’t affect the protected area.


1. In the Timeline panel, drag the Work Area Start marker to 2:00.
2. Drag the Work Area End marker to 5:00.

You’ve reduced the work area to the area that you want to protect from time-stretching.


3. Choose Composition > Responsive Design – Time > Create Protected Region From Work
Area.
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