chromakey
Color-based video compositing
Chromakey is a video technique that replaces a specific color—usually bright green or blue—with another image or background.
The subject performs in front of a colored screen, which is then digitally removed in post-production: The weather forecaster stands in front of a chromakey screen.
Also called green screen or blue screen.
The verb means to apply this technique: We'll chromakey you into the scene.
technique
Inputting via buttons
- compositingCombining visual elements digitally
- layeringForming successive strata
- rotoscopingTracing filmed motion frame-by-frame
- featheringAdjusting blade pitch horizontally
production
Digital film effects
- post-productionAfter-the-shoot work phase
- compositingCombining visual elements digitally
- televisionBroadcast viewing device
- backdropRear stage scenery
green
Color of vegetation
keying
Inputting via buttons
- compositingCombining visual elements digitally
- layeringForming successive strata
- rotoscopingTracing filmed motion frame-by-frame
VFX
Digital film effects
- post-productionAfter-the-shoot work phase
- compositingCombining visual elements digitally
- televisionBroadcast viewing device
green
Color of vegetation
blue
Primary color; also sad
- ultramarineDeep blue from lapis
- backingAid or sponsorship
rendering
Interpretive depiction or performance
- compositingcompositing, alpha channel, matte, keying, composite
- video effectsfade, fading, dissolve, dissolving, zooming
production approach
chromakeylocation shooting
Filming at real places
natural environment · rear projection · matte painting · forced perspective · miniatures