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Smooth animation based on “convert audio to keyframes”??
Hello everyone, I’m new here and not really an AE profession, but I’m stucked with a task that I just can’t figure out (google research for hours didnt help).
I wanna create a ball that bounces to some music and changes the color based on the music, too.
So far I understand the “Convert Audio to keyframes” thing and my ball has the following expression codes for position:temp = thisComp.layer(“Audio Amplitude”).effect(“Left Channel”)(“Slider”);
[0+1500, -temp*10+800];and this one for the Hue of the Color effect
thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”)
It both works, but my problem is that i need a much smoother animation. Unfortunatly i can not smooth out the keyframes of the Audio Amplitude Layer cause that one needs to remain easy replaceble.
So i was hoping that i could either somehow add a “smooth” into my expression code, or if there was a way to tell the expressions to only use every – lets say – 5th keyframe (or average of the next 5 keyframes).please help!
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1 Reply
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There is a smooth expression, it is:
smooth(width = 5*thisComp.frameDuration, samples = 5, t = time + 2*thisComp.frameDuration);You can use this expression in the audio amplitude (“Both Channels”).
==> link (towards the bottom of the page).
I’m not sure what the parameter t exactly is, probably the center of the sampling interval. In that case, if you want to sample over the next 5 frames, use the expression above. But if you want to take into account values before and after the current time, just leave the default (t=time) or omit it. Then the expression takes “samples” samples over a width of “width” seconds around t and returns the average, but i’m also not sure if it is a weighted average or flat.You might be disappointed by what it does though. The smooth expression is fine, but maybe not what you are after for your animation.
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