I did some searching and couldn't find anything. I'm looking for a script that takes a composition and remaps all the layers and keyframes in it.
Essentially, if my composition is 20 seconds long and I change it to 10 seconds, it would adjust all the layer in and out points, keyframes, markers, and whatever else accordingly. Would be amazing if the script worked on only selected layers as well. I think this would be a huge time saver.