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Create a mask based off of a key
Is there any way for me to easily create a mask based off the results of a green screen key. I was hoping for this so that I don’t have to make a mask and track it manually. Maybe is there some way to do it from an alpha channel?
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6 Replies
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Hi. What exactly are you trying to do – why make a mask?
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It’s entirely hypothetical, but if I would want to easily make a mask around something, it would be much easier just to do it based off a color selection right?
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Animated masks are the realm of MOCHA. It’s not uncommon to use Mocha for masks even when doing green screen.
But, do you specifically need a mask for something and you can’t use the alpha channel?
Andrew Somers
VFX & Title Supervisor
https://www.GeneralTitles.com -
No, I think you’ve answered my question. Thanks
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Don’t forget you can follow a track with and move, rotate, whatever another turned off version of your keying layer – in effect it becomes and independent “mask”.
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there’s also layer-auto trace. you can create a mask based on alpha.
https://helpx.adobe.com/il_he/after-effects/using/creating-shapes-masks.html#create_a_mask_from_channel_values_with_auto_traceRoei Tzoref
2D/VFX Generalist & Instructor
♫ AeBlues Tutorials ♫
http://www.tzoref.com
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