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Expression Slider
I have 2 layers, an audio layer and a still image. I have converted the audio to keyframes, giving me all the keyframes for amplitude. I am attempting to alter the scale of the still through expressions linking it to the audio. The issue is that the amplitude range is 0-100 and the range of scale I need is 60-80. How do I convert the ratio of the amplitude keyframes so that they fall within the proper range? Thanks for any help.
Brad Strickman
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1 Reply
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Try:
A = thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”); //the audio layer
minScale = [60, 60]; //minimum scale
maxScale = [80, 80]; //maximum scale
linear (A, 0, 100, minScale, maxScale) //as A goes from 0 to 100, Scale value goes from minScale to maxScale in a linear interpolationChange the values as necessary. I tested here and worked fine.
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