I've been askjing around to find out how a particular effect that I seen on numerous music video was created. No one could give me definitive answer, I even suggested maybe it was done by editing in Premiere, which others agreed is a strong possibility. However to hold this effect for a long period of time or to try different layer stacking would be very tedious in an editing program.
The effect here http://youtu.be/T6j4f8cHBIM at 0:50 or http://www.vevo.com/watch/nicki-minaj/stupid-hoe-explicit/USCMV1100087
I was given a wiggle expression wiggle(1,50) < 50 ? 0 : 100 that makes a layer's opacity either 0 or 100 if the wiggle value is above or below a defined number, but the result of this is random.
I've never written my own expression and I've discovered even trying to verbalize the desired action and result takes very presice language, so here's my attempt.
I would like to control a layer's ocacity by having it alternate, in sequential order, through a complete cycle of assigned values x times per second.
ie.
Layer A opacity values = 0, 25,50,100 played in sequecial order at x frequency
I would like to use this expression to have layers that are stacked visable as follows:
(The start time of each layer is the same and the frequency rate in the expression the same).
Layer A opacity values = 100, 0, 0
Layer B opacity values = 0, 100, 0
Layer C opacity values = 0, 0, 100
With the expression applied to each layer, the visual result in the Comp window would be seeing Layer A,B,C in that order x times per second. By having the expression reference a sequence of numbers I can choose to have 3 or 20 layers be totally, partially or invisible in a predictable/rhythmic way.
Thanks in Advance