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Gradient controlled time remapping? (Rolling shutter effect)
Hey, so I’m trying to make a, sort of, rolling shutter effect to a layer in After Effects, but I don’t know how to go about this.
My only guess is that I need to make an expression in time remapping, which looks at a gradient to determine how much delay is needed – using Dan Ebberts’ method:
x = thisComp.layer(“Gradient”).sampleImage(transform.position, [.5,.5]/2, true, time)[0];
100*[x,x]The only problem is that it will affect the entire image, instead of affecting it in segments, just like rolling shutter does.
Does anyone know how to do this properly? -
2 Replies
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“Gradient-controlled time remapping” describes the time displacement effect.
https://helpx.adobe.com/after-effects/using/time-effects.html#time_displacement_effect
Considering it will look at the full frames that actually exist in the footage rather than trying to recreate in-between motion, it will not exactly be rolling shutter effect. The time displacement needs to be several frames to create a proper result, so it is more of a slit-scan effect.
Rolling shutter would be motion that occurs in less than one frame. You could conceivably achieve a rolling shutter type effect if you generated additional footage between frames with pixel blend.
Kalleheikki Kannisto
Senior Graphic Designer -
Thanks man!
Time Displacement works great
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