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Lesson 10. Keying

Lesson 10. Keying

Lesson FilesLessons > Lesson10 folder
Mediabg.1-78.rgb

bg_big.rgb

engine.1-78.rgb

gas.1-78.rgb

lens.1-78.rgb

parts.1-78.rgb

ship.1-98.rgb

ship_comp.1-78.rgb

ship_roto.1-78.rgb
Timeapproximately 1 hour
GoalsDemonstrate the basic theory of the Primatte chroma-keying system

Change a clip from 30 fps to 24 fps

Use Primatte to generate keys


Keying and generating mattes is one of the most important aspects of compositing. The process of keying involves extracting an object from one image and combining it with a different background. Most keyers use the difference in color between the color channels of an image to extract the matte. Normally, this technique depends on the foreground subject being photographed in front of a uniformly colored background, such as a blue or green screen. Shake includes the Primatte and Keylight keyers, with the Ultimate keyer offered as an option.


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