So when I stretch the two chosen layers, they do stretch together, but the collision point shifts so I need to correct it manually.

How can I simultaneously change the length of the layers without messing the scene?

I've tried to show the things in this picture. Thanks!

enter image description here

  • It works the way it is supposed to. You just need to realign the layers afterwards.
    – Dr Mayhem
    Dec 21, 2017 at 10:19
  • Well, I know. I'm just hoping there is another way to adjust the length of the composition.
    – Ant
    Dec 21, 2017 at 11:06
  • I'm having a play and a look at documentation to see if there is another way...
    – Dr Mayhem
    Dec 21, 2017 at 11:11
  • Seems like a job for a script.
    – stib
    Apr 21, 2018 at 4:25

2 Answers 2


You can nest this two clips in new composition, and change time starching on it.

  • I know, but it's not smart since there are some After Effects transitions. I mean, if I stretch the layers, the transition just goes slower. But in your case it will be just drop in framerate.
    – Ant
    Dec 22, 2017 at 6:37

I don't know if it works, but you may add a marker on each layer when the transition without stretching starts pressing this key: *

Then, I think the markers should be paired with the original frames and then you just have to match them in the timeline again.

Sorry if this doesn't work or there's a better way, it's just an idea.

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