• Adobe After Effects

  How to create a velocity mask?

  Posted by Manuel Voss on November 5, 2012 at 3:50 pm

  I mostly think I know what I’m doing when working with after fx, but actually I’m kinda stucked. Hope someone can help me.

  I want to apply a filter to a video. But its intensity should be based on the velocity of the pixel. How to get a velocity mask?

  There must be a way to achieve this – maybe by getting some information from the CC Force Motion Blur? Any ideas?

  Manuel Voss replied 13 years, 10 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Darby Edelen

  November 5, 2012 at 4:00 pm

  The only product I’ve ever seen that will expose motion vectors in AE is Twixtor:

  https://www.revisionfx.com/products/twixtor/features/#ae_compatible_4

  The vectors may not be detailed enough for your purpose though. A trial run might be in order 🙂

  I’ve used this plug in the past to generate some pretty cool particle fields that react to motion in live footage.

  Darby Edelen
• 

  Manuel Voss

  November 5, 2012 at 4:06 pm

  Good thinking… didn’t actually realize, that twixtor does motion detection for the retiming.

  I will give it a try. Thanks!

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