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After Effects experiment: Speed-driven brush attributes

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Uploaded by on Nov 10, 2009

Speed from captured position data is applied through expressions to drive brush width and color.

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Film & Animation

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Standard YouTube License

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  • @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 :)

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

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