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Imitating a film projector with FPS control

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You know the good old movies shown in an old flickering and not very well timed film projector where you can see the different frames scrolling.
After Effects 7
Displacement
Presets (ffx)

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Here is the original description:
Add the Distort->Offset plugin to a piece of footage and add this expression to the "Shift Center To" property. If you want a black line or film frame around the footage, pre-comp and do it there.
fps= 24;
t=time * fps;
move= t * thisComp.height;
reset=Math.floor(move/thisComp.height);
moveReset=move-reset*thisComp.height;
[thisProperty[0],thisProperty[1] + moveReset]
You can also add a slider to the fps property to animate it and simulate adjusting the framer on a projector. Add an Expression Controls->Slider Control Effect to the layer and change the expression of the "Shift Center To" property to this:
fps= effect("Slider Control")("Slider");
t=time * fps;
move= t * thisComp.height;
reset=Math.floor(move/thisComp.height);
moveReset=move-reset*thisComp.height;
[thisProperty[0],thisProperty[1] + moveReset]
Finally to add some flicker, add this expression to the Opacity:
wiggle (effect("Slider Control")("Slider"), 20)
since the Offset plugin does not motion blur it might be useful to also apply a vertical Directional Blur with an expression that links the length of the blur with the speed of the offset effect.
multiplier=.0001;
effect("Offset")("Shift Center To").speed*multiplier
by lloydalvarez


(Min. Version: After Effects 7, Category: Displacement, Type: Presets (ffx))
posted by mmo on Feb 17, 2009

 

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