MCT Lexicon Multimedia & Creative Technology
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Chroma Key

Chroma key, commonly called green screen or blue screen, is a visual effects technique that removes a specific color from footage and replaces it with another image or video. The subject is filmed against a uniformly lit colored background, typically bright green or blue because these colors are least present in human skin tones. Software then makes that color transparent, allowing compositing of the subject over any background such as fantasy landscapes, news sets, or virtual environments.

Audio/Video vfx

Compositing

Compositing is the process of combining visual elements from multiple sources into a single unified image or video, creating scenes that would be impossible, impractical, or too expensive to capture in a single shot. This includes layering green screen footage over backgrounds, adding CGI elements to live action, combining multiple camera passes, creating digital environments, and integrating visual effects like explosions, weather, or supernatural elements. Professional compositing involves precise color matching, edge refinement, lighting integration, and camera tracking.

Audio/Video post-productie vfx