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Applying a track motion to a mask

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Otto JibladzeApplying a track motion to a mask
by on Oct 8, 2013 at 11:54:36 am

Hello. First of all I want to say that my English is bad, So I hope you will understand what's my problem.
I have video over 10 second with man moving on the street. I want to remove background and make it green. So I made mask for removing background but it's very difficult, because I have to transform mask on every frame which needs very long time. I just want to track motion to a mask. Can someone help me with this? BIG THANKS and sorry for my disgusting English. :))))


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Tudor "Ted" JelescuRe: Applying a track motion to a mask
by on Oct 8, 2013 at 11:59:57 am

From your description it sounds that you want to isolate the man in the shot. Since the man is waking there is no way of just applying a track to mask - you need to cut him out Roto brush may work but Mocha will help you for sure to cut a mask for him.

Tudor "Ted" Jelescu
Senior VFX Artist


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Todd KoprivaRe: Applying a track motion to a mask
by on Oct 8, 2013 at 3:28:00 pm

This video shows the basics of using motion tracking and rotoscoping together:
http://tv.adobe.com/watch/learn-by-video/adobe-after-effects-cs5-motion-tra...

This video shows how to do the same thing with Roto Brush:
https://www.video2brain.com/en/lessons/isolating-a-subject-with-roto-brush

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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Otto JibladzeRe: Applying a track motion to a mask
by on Oct 8, 2013 at 6:38:38 pm

Thanks for the help. I just installed Mocha but I don't know how to use it. Can you link me some tutorials how to cut mask? Thanks again


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Todd KoprivaRe: Applying a track motion to a mask
by on Oct 8, 2013 at 7:18:05 pm

Start here for rotoscoping information:
http://helpx.adobe.com/after-effects/using/animating-shape-paths-masks.html...

See this page for resources about mocha:
http://helpx.adobe.com/after-effects/using/tracking-stabilizing-motion-cs5....

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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Roland R. KahlenbergRe: Applying a track motion to a mask
by on Oct 8, 2013 at 9:23:43 pm

mocha commits to tracking masks by default. The mechanics of mocha are such that you draw a mask/spline over the tracking area and mocha then tracks the area, bringing the mask along as it tracks the area.

Lots of mocha tutorials can be found on the Imagineer site. Here's a list of tutorials covering the fundamentals of mocha - http://www.imagineersystems.com/videos?tagFilter=Fundamentals+of+mocha&sort...

And here's another bundle that includes mocha fundamentals by Steve Wright - http://www.imagineersystems.com/videos?tagFilter=All&sortBy=Oldest

HTH
RoRK

Intensive mocha & AE Training in Singapore and Other Dangerous Locations

Imagineer Systems (mocha) Certified Instructor
& Adobe After Effects CS6 ACE/ACI


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