How to delay opacity following another layer

Question

Hello All.I have 100+ layers that I would like to fade on in a delayed fashion following the manual opacity key frames set in a 'master' layer. Thus, each of the 100+ layers will incrementally fade on by half a second — after the 'master' layer has faded in.My research has led me to this expression:thisComp.layer("leader").transform.opacity.valueAtTime(time-thisComp.frameDuration)however the above fades in all 100+ layers simultaneously. I'd like the layers to fade in one after the other.Can anyone suggest the script to make this happen please?

Dan Ebberts · Accepted Answer

Assuming that the leader layer is layer #1, something like this should work:

delay = (index-1)*thisComp.frameDuration;

thisComp.layer("leader").transform.opacity.valueAtTime(time-delay);

This will give layer 2 a 1-frame delay, layer 3 a 2-frame delay, etc. If you wanted to increase the incremental delay to say, 3 frames, you could just change the first line to:

delay = 3*(index-1)*thisComp.frameDuration;

Dan

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