- The biggest drawback to using a green screen…or a blue screen background is the effect…it has on the scene itself.…Not only are they challenging to set up and light…and they're difficult for actors to work with,…but notoriously and in most cases the background bleeds…into the foreground effecting the hair,…skin tones, costume really whatever's there.…In this lesson we'll focus on how to alleviate…the effect of color spill using a specific effect built…into After Effects CC called Advanced Spill Suppressor.…
There are several methods for reducing color spill.…I've already eliminated the most obvious one of them…which is to use Final Result in Keylight.…This does succeed in removing the green…but it also creates a lot of other problems of its own…that can also be alleviated in Keylight…using Foreground Color Correction and Edge Color Correction.…However you're really starting at a disadvantage here,…and there are other by products of using Final Result…that I've already warned you about.…
A better choice is to leave it at Intermediate Result…
Author
Mark Christiansen
Released
12/6/2014Beginning 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 46s
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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: Eliminate spill automatically with Advanced Spill Suppressor