Basic Chroma Keying a green screen with Keylight and After Effects
In this live classroom demonstration students are shown how to pull a chroma key to create a matte using Keylight and After Effects. After the initial Key is created a light wrap is made, giving a more accurate final compositing result.
This is an alternative to the other keying tutorial posted, both share knowledge and content.
I apologize for the small resolution of this screen recording, the projector that I was connected to was not HD.