Using the Non-Red key

The Non-Red key creates transparency from green or blue backgrounds. It is similar to the Blue Screen and Green Screen keys, but it also lets you blend two clips. In addition, it helps reduce fringing around the edges of nontransparent objects. The Non-Red key is recommended for keying out green screens when you need to control blending, or for when you are not able to produce satisfactory results with the Blue Screen or Green Screen keys.

Adjust the following settings as necessary:

Threshold Drag to the left until the blue or green screen is made transparent.

Cutoff Drag to the right until the opaque area reaches a satisfactory level.

Blend Drag to blend the image with any underlying image.

Superimposing and Compositing > Using keys to superimpose and create composites > Using the Non-Red key