This is a fairly simple problem I’m sure, but I can’t figure out exactly what it is I need.
I’m driving the speed of a movieinTOP with the audio spectrum of a sound file. I want to be able to control the range of the speed with a slider or expression or curve or even the keyframe index.
So far this is what I have driving the moviefilein speed: audiofileinCHOP>audiospectrumCHOP > selectCHOP:chan1 > analyzeCHOP > mathCHOP:from range 0 to 0.01:to range 0 to 1 > null
Pretty standard.
Ideally I would be able to adjust the bottom of the MathCHOP “to range” value and take it into the negatives the further along the movie plays. This would change the effect the silences have on the speed from no speed to negative speed (reverse), which is what I’m after.
I should also add that the audio file I’m using has sporadic gaps of silence in the beginning which is why I’d like to vary the back-and-forth speed effect based on the keyframe index.
I’d be very grateful for any suggestions or clues on how to achieve this. Thank you!