Software:
After Effects CC 2018
Creating Inside and Outside garbage masks allows better and easier keying because the keying parameters can be focused for the best result at the contours areas.
- Apply the Keylight effect and, sample the screen color and adjust Screen Gain optimize it for the contours area.
- Create an ‘Inside’ garbage mask, name it, and set its mode to ‘None’.
- Create an ‘Outside’ garbage mask, name it, and set its mode to ‘None’.
- In the Keylight effect properties, under ‘Inside Mask’, select the inside mask you created.
- In the Keylight effect properties, under ‘Outside Mask’, select the outside mask you created, and also check Invert if needed.
