ABSTRACT
The footage is captured in an NLE, and sent to a compositing program such as 2.
After Effects, Fusion, Motion, or Shake. In the compositing application, the green is
removed, the remaining edges are softened, and secondary keys or mattes may be
created through the use of rotoscoping or garbage mattes. A fi nal matte is created
from these efforts and saved with the video footage as a separate channel along-
side the video’s three other color (red, green, and blue) channels. What remains of
the foreground element may require additional color correction to compensate for
color cast (referred to as “spill”) from the background.
