Keying Greenscreens in After Effects

In this After Effects tutorial, we'll learn how to key greenscreen or bluescreen footage in After Effects. Software required: After Effects CS5 and up.
Course info
Level
Intermediate
Updated
Dec 1, 2010
Duration
51m
Table of contents
Description
Course info
Level
Intermediate
Updated
Dec 1, 2010
Duration
51m
Description

In this After Effects tutorial we'll learn how to key greenscreen or bluescreen footage in After Effects. Using greenscreens is a common practice in today's VFX workflow, so understanding how to get a good alpha from greenscreen footage is very important. We'll begin this tutorial by learning what a chroma key is and what we need to look out for while we shoot the greenscreen footage. From there, we begin keying a sample shot using the Keylight keyer. We'll then learn how to refine our matte and edge using the various built-in modifiers. Finally, we will composite our keyed footage over a background and learn about spill suppression and some compositing tricks to integrate our pieces of footage. We'll end the tutorial by learning a method of treating compressed or chroma subsampled footage to pull better keys. Software required: After Effects CS5 and up.

About the author
About the author

Chris is a VFX author at Pluralsight. Along with creating and recording training, he also manages the support team and works closely with the production development team. He began his career working freelance and quickly realized that he wanted to find a company where he could use his talents to help people succeed in the CG industry.

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Section Introduction Transcripts
Section Introduction Transcripts

Introduction and Project Overview
Hello, I'm Chris with Digital-Tutors, an Adobe authorized training partner. In this series of lessons we'll learn how to key green or bluescreen footage in After Effects. I'm going to use the term greenscreen to refer to either screen color. Using greenscreens is a common practice in today's VFX workflow, so understanding how to get a good alpha from greenscreen footage is very important. Now we'll begin this project by learning what a chroma key is and what we need to look out for while we shoot the greenscreen footage. From there we will begin keying a sample shot, using the Keylight keyer. We'll then learn how to refine our matte and edge using the various built-in modifiers. Finally, we will composite our keyed footage over a background and learn about spill suppression and some compositing tricks to integrate our pieces of footage. We'll end by learning a method of treating compressed or chroma subsampled footage to pull better keys. This series of lessons will take a step by step approach at the keying process inside after effects. Creating alpha or mats using green screens will allow us to composite two pieces of footage together much faster and with a much higher degree of accuracy. So with that, let's go ahead and get started.