Join Mark Christiansen for an in-depth discussion in this video Use the Adobe workflow: Keylight, Key Cleaner, and Advanced Spill Suppressor, part of After Effects Compositing: 4 Color Keying.
- We've looked at Keylight as well as…Advanced Spill Suppressor under the Keying menu.…Now let's take a look at the third tool…that's designed to be used with them.…That one is called Key Cleaner.…It's also found under the Keying menu,…and it automatically refines edges.…Here you can see that the edges look a lot softer…than they did prior to applying it.…But if we look at the Alpha Channel,…there are also a few problems.…Specifically, there is noise and there are holes…in the matte that have been introduced…that were not there before.…
This isn't necessarily a reason not to use Key Cleaner.…In fact, the additional Edge Radius setting that's here…is just set a little bit too high.…So by lowering this to something more palatable,…between say 2 and 3, I get the benefit of a softer edge,…without the undue side effects.…So looking at the matte itself, I've now got…a pretty good looking result.…Now because these three are designed to be used together,…Adobe has even made it easy for you to apply…all three of them at once.…
Author
Mark Christiansen
Released
12/7/2014Beginning with a brief explanation of the keying process, Mark takes you through the steps involved in creating a perfect green-screen key: generating a rough matte, eliminating color spill and matte lines, and refining problematic edges. He shows how to work with Keylight and Primatte—two indispensable keying tools in After Effects—and explains when to use one over the other. And for times when green screen won't work, he shows how to generate high-contrast mattes, or luma keys, based on the luminance data in your footage. Last, learn about compression and how to prep a shot for keying.
- What is color keying?
- Using garbage mattes
- Getting started with Keylight
- Understanding the Screen Color, Clip Black, and Clip White adjustments
- Eliminating spill with Advanced Spill Suppressor
- Using Key Cleaner to refine edges automatically
- Dividing a matte with holdout mattes
- Breaking down a complex color key
- Creating a luma key with Extract
- Setting up sky replacement
- Using Refine Soft Matte to improve edge detail
- Feathering edges with Channel Blur
- Knowing when to avoid green screen
- Prepping a shot for keying
Skill Level Intermediate
Duration
Views
Q: How do I locate the exercise files for chapter 5, 6, and 7 of this course?
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Introduction
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Welcome1m 50s
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Using the exercise files2m 23s
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1. Work with Keylight
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2. Manage Edges and Spill
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3. Divide a Matte for Best Results When Keying
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Add a holdout matte1m 38s
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4. Solve Problematic Edges
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5. Complex Color Keys and Primatte
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6. High-Contrast Mattes (When There Is No Green Screen)
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7. Prep for Success When Color Keying
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Prep a shot for keying3m 4s
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Video: Use the Adobe workflow: Keylight, Key Cleaner, and Advanced Spill Suppressor