How to Use the Spill Suppressor Effect in Adobe After Effects

If you are using the Chroma-Key effect in After Effects to make your background transparent, and run into a problem with reflective objects disappearing, you can correct the problem by creating an Add Mask on a new layer of footage, and then applying the Spill Suppressor effect.

Difficulty: Moderate

Instructions

Things You'll Need:

• Computer with Adobe After Effects
• Digitized video footage

1. Create an Add Mask on the footage. If you are not sure how to do that, follow the instructions in “How to Create an Add Mask Using Adobe After Effects.”

2. Once finished, identify the area within the Add Mask that is the greenest (or bluest – if you shot your footage on a blue screen.)

3. Go to Effect, Keying, and select Spill Suppressor.

4. In the Effects Window Control Panel, select the eye dropper tool next to “Color To Suppress.” Click on the greenest (or bluest) part of your Add Mask.

5. In the Effects Window Control Panel, next to “Suppression,” there is a number at 100. Left click on it and drag the number up or down, adding or subtracting how much the color is suppressed, until the mask most matches the color of the rest of your footage. Save your work.