Increase duration of comp with the keyframes

[Comp415F95]

Hi,

I have a precomp of 20 milliseconds, which I need to increase the duration to 20 seconds, however I need to move the keyframes proportionately with the composition duration.

Any advice?

[Vishu_Aggarwal]

You will have to do so manually..however, to move the keyframes proportionately you use the alt key technique to scale the keyframes  proportionately check the following video - https://www.youtube.com/watch?v=PFbFUvfMVgE

Or

You can use the plugin to automate the task i.e. Elastic-comp-changer -  https://aescripts.com/elastic-comp-changer/

[Rick Gerard]

If there is no video in the composition, the easiest thing to do would be to drop the shot composition into a longer composition, then apply Time Remapping and just extend the layer and move the last keyframe.

[ShiveringCactus]

You might be able to get away with selecting the keyframes, right-clicking and selecting Rove Across Time.  This will refactor the inner keyframes to create a smooth curve, but it will also allow you to move the last keyframe and the others will stretch out accordingly.