How to Key Green Screen Footage in Adobe After Effects

The opportunity for background creativity and animation in post production is Institution Marketing if you con properly light and key your green screen footage. So, let's get creative with our green screen editing skills and go through a brief tutorial on how to green screen using Adobe After Effects.

  1. Create a new composition in After Effects by dragging your video clip into the "Composition" icon.
  2. Under "Effects & Presets" search for the term "keylight" and apply to your video clip by double clicking it.
  3. Now click the "Screen Colour" eye dropped tool and click on the green screen section of your image.
  4. Now switch the view from "Final Result to "Screen Matte."
  5. Scroll down to the "Screen Matte" section and open the menu.
  6. Tweak the "Clip Back and "Clip White" settings until the background is completely black and the foreground subject is completely white. Keep the "Clip White" and Clip Black" settings as far away from each other as you can without introducing spotting.
  7. Switch the view back to "Final Result" and you will see a much cleaner key.
  8. You can also adjust the "Screen Shrink/Grow" settings which should remove some of the rougher edges.

    Green Screen Tips

  • Get it right the first time:¬†In order for a green screen to be used to its maximum potential it should be lit evenly with no winkles or dark spots on it. Also your subject should be about 15 feet away from the background to avoid shadows or green spill.
  • Keying out the Green Screen¬†is just as important as lighting your background.

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