Imitating a film projector with FPS control

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))

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Imitating a film projector with FPS control

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