In video, the level of white in a video picture; in audio, the loudness of an audio signal.
gamma
A curve that describes how the middle tones of an image appear. Gamma is a nonlinear function often confused with brightness or contrast. Changing the value of the gamma affects midtones while mostly leaving the whites and blacks of the image unaltered. Gamma adjustment is often used to compensate for differences between footage acquisition formats.
generators
Clips that are synthesized (or generated) by Motion. Generators can be used as different kinds of backgrounds and elements for visual design.
GPU
(graphics processing unit) The central processor inside a computer graphics card.
gradient
A generated image that changes smoothly from one color to another across the image.
grading
The process of color-correcting footage to achieve a desired look.
greenscreen
A solid green background placed behind a subject and photographed so that later the subject can be extracted and composited into another image.
