Re-name the comp. Open the comp. Highlight the footage layer in question. Alt/Opt-drag the new footage onto the layer. The clip is replaced with a new clip.
Any nested comps within the duplicated comp ARE NOT DUPLICATED. They remain the same nested comps as you will find in the project panel.
To duplicate the comp and any comps nested within it, you need a script.
Sorry, I have renamed the layer and deleted everything inside it. Now I go to the other composition I want to copy selecting all its contents holding the ALT key and it doesn't let me copy / move it to the renamed composition?
Sorry, but I neglected the most important step: before you do ANYTHING, you duplicate the comp... THEN rename it. I hope you can revert... or you duplicated the comp to begin with.
And you're not REPLACING footage -- that's a specific AE function. You're just copying layers from one comp and pasting them into another.
AE has its own arcane lingo, you see. If you don't know it, things can get messed up in translation.
I don't understand. I have duplicated the composition yet the image is still linked to the original?
- I double click the duplicated composition
- I delete the image and add a new one
- Go back to the "scene" where I have added the composition to and the original image still appears?
Am I doing something stupid?
You didn't replace the duplicated composition in that other composition. You still have to do that.
You use the Alt/Opt-drag technique for replacing footage to do it.