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Rotation With Soundkeys
Hi All,
I sure this is fairly simple, and one of you expression geniuses will know what I need to do.
I have a fan blade rotating on a null at 1 revolution a second for the length of the comp. I want the speed to vary intermitenly with the beat of the music which is keyframed using Tapecode Soundkeys.
The problem now using a standard rotation expression it just jumps back and forth, I want it to keep rotating for the length of the comp, just kind of “hiccup” in time to the music.
Thanks in advance, Jim
thisComp.layer("Adjustment Layer 5").effect("Sound Keys")("Output 1") -
3 Replies
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Try setting the Falloff of Range 1 to None(integrate).
Dan
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or just let SoundKeys determine the Rotation parameter value of the layer and then set the layer to use a smoothly rotating null as its parent layer. I think that in this case since you’re talking about one of the transforms that parenting works for, this is a solution that will work. But it’s an interesting question (that I’d like to hear any answers to) how to do this for other kinds of parameters (like a filter parameter) that aren’t included in parenting…
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I finally figured it out. I made the fan blade a pre-comp with its own rotation null, set to the rotation I liked. Then in the main comp I linked the pre-comp to another rotation null put an expression on the null rotation that I linked to the soundkeys. Works great now, I have the “hiccup” in time to the music.
Thanks for the suggestions.
Jim
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