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Animate Stroke Effect along Motion Path
Hey!
We ar doing a video, were a stroke of light is following a person.
So the person has a little light in her hand, which i motion track with AE to get a motion path. So long this works fine.
But now i want the stroke effect to follow this motion-null-object so it seems like the person is drawing the line.
How can i do this?
I already tried to somehow convert the motion path into a mask and use this on the stroke effect, but so far no luck…
I also found this: https://forums.creativecow.net/thread/2/991300 But i just don´t get it.Thanks in Advance
Ben -
4 Replies
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In what way is stroking a mask failing for you? That is what you should do. Give details on exactly what you’re doing and exactly how it’s not working, and we can help you.
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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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Hello!
Just tried to find “stroking a mask”, but theres only illu tutorials showing up, so i dont really know what you mean by that term.
What is not working:
As you can see here i have the motion path on my “tracker”-layer. Now i try to copy this information per ctrl+c ctrl+v to my shape-layer – >Mask 1 to get a path i can use the stroke-effect on. But this doesnt work, it always copies the info into the transformation-part of the shape-layer.
Maybe im just too stupid and i dont get it at all, how it works.
ben
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I meant that you could apply the Stroke effect to a layer containing a mask that uses that path.
Follow the instructions here for creating a mask from a motion path:
https://helpx.adobe.com/after-effects/using/creating-shapes-masks.html#create_a_mask_or_shape_from_a_motion_path———————————————————————————————————
Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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You may want to look at using a particle generator instead of the stroke effect. Here’s what https://www.broadcastgems.com/MediaServer01/TrackingTest_PavementLeaves_01.mp4
I did awhile back with a 3D tracker. Trapcode Particular was used to generate the organic lines and Trapcide Lux, for the lens orb.HTH
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