Join Mark Christiansen for an in-depth discussion in this video Conceal matte lines with an edge matte, part of After Effects Compositing: 4 Color Keying.
At this point I have a matte that has no chatter,…but it is simply too choked.…If I play it in motion, you'll see that…there's just a lot of missing detail.…And in fact, you can see that also…by comparing the original with the keyed version.…So I'm actually going to back off my adjustment…and show you how to create an edge matte that allows me…to blend the background and foreground together.…The first step here is just to eliminate this levels effect…that is what's choking that matte.…
I'm going to get rid of Channel Blur as well…and just go back to the original extract.…So here I'll lower the white point…and then, increase the amount of softness…so that it spans that entire spike that you see.…And that's the sky in the background.…If I solo the layer,…you can clearly see we've got pretty strong matte lines.…My next step is to duplicate this.…And I'm going to do it in a way that may not be necessary,…but I'll copy it with property links…and paste it up at the top.…
Now that means that if I make any changes to the extraction,…
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: Conceal matte lines with an edge matte