Filter – Chroma Key
The Chroma key filter is a simple keyer that allows you to quickly key out green or blue backdrops from video to allow keying of video that is mapped onto 3D objects in Hollywood FX.
Chroma Key options
Select Blue or Green to key out blue or green backdrops.
This slider controls how much of the picture is keyed out. The higher the number the greater the range of color that is keyed out.
This slider controls the fine adjustment of the key around edges of differing colors.
This checkbox will reverse the key, so that everything except the blue or green areas is removed.