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Is there an expression for dynamically changing the startpoint of a layer relative to a keyframe?

Explorer ,
Mar 03, 2023 Mar 03, 2023

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Hello,

 

I have an audio layer that I'd like to start at the same time as the first keyframe of a mask path titled "Mask 1" on a layer titled "Mask Movement". However, the position in time of the keyframes of the mask path are set to change based on the outpoint of a different layer using the following expression:

target = thisComp.layer("Target Layer");
targetMask = target.mask("Particular Path").maskPath;
targetMask

 

In case it helps, the purpose of the audio layer automatically changing its start position is because I'm creating multiple renders that have varying timings, so it would help to automate the process.

 

Thank you!

 

TOPICS
Expressions , How to , Scripting

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correct answers 1 Correct answer

Community Expert , Mar 03, 2023 Mar 03, 2023

Enable time remapping for your audio layer and then apply this time remapping expression:

t = thisComp.layer("Mask Movement").mask("Mask 1").maskPath.key(1).time;
valueAtTime(time - t)

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Community Expert ,
Mar 03, 2023 Mar 03, 2023

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Enable time remapping for your audio layer and then apply this time remapping expression:

t = thisComp.layer("Mask Movement").mask("Mask 1").maskPath.key(1).time;
valueAtTime(time - t)

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Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
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