After Effects experiment: Speed-driven brush attributes

[bajkopepe]

hi. can you explain how you did this? really cool!

[arozenfeld]

@bajkopepe Sorry for the delay. Here's the idea: I first used "Motion Sketch", an After Effects feature that lets you record the position of a layer as you move the mouse or a tablet/pen. I did this with a null object. Then copied the resulting position keyframes and pasted them into the position property for the "Write-on" effect. Then I used expressions to make the width and color of the brush strokes be a consequence of the brush position's speed. Yes, I know, it's not beginner's stuff :)