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Extend

This will extend the out point of your layer (the ending) to match the asset that it’s being sent for rendering. This script is useful in cases where you have a placeholder asset that’s a 10-second video, and you want to swap it out with a 20-second video dynamically. If you don’t add the Extend script, After Effects will cut your video after 10 seconds. With the Extend script it will show the full 20 seconds.

These are the options for the extend script:

  • Maximum duration - limits the maximum duration of the layer to given value in seconds.
CropSet duration