What is Compositing?
Compositing is combining elements from different sources, such as a filmed subject, a replaced background, a screen insert, or a generated object, into a single image that reads as one shot. The craft is in matching light, colour, grain, perspective, and edges so the join cannot be seen.
- Category
- Creative & Video Production
- Also called
- Comp, Video compositing, VFX compositing
- In our work
- VFX & Cleanup
Most commercial visual effects are compositing: a keyed subject over a new background, a product dropped into live footage, a sky replaced, a set extended beyond what was built. Each element can be good on its own and still look pasted on if the light direction, lens, grain, or colour response does not match the plate it sits in.
AI tools can now generate or alter elements quickly, which moves more of the work into the matching step. Whether a shot looks real usually comes down to that step, checked frame by frame across the length of the shot.
Common questions.
What is a plate in compositing?
The plate is the original filmed footage that other elements are composited into. Matching new elements to the plate, its light, lens, grain, and colour, is what makes a composite believable.
Why do some composites look fake?
Usually a mismatch the eye notices without naming: light coming from the wrong side, edges that are too sharp or too soft, grain that differs between elements, or colour that does not respond the same way. Each is fixable, but only if someone checks for it.
Related terms.
Rotoscoping
Creative & Video ProductionRotoscoping is drawing a moving mask around a subject, frame by frame, so it can be separated from its background.
Screen Replacement
Creative & Video ProductionScreen replacement is placing new content, such as an app interface, a website, or a video, onto a phone, laptop, or monitor screen in footage after it was filmed.
Hybrid Production
Creative & Video ProductionHybrid production is a video method that combines live-action filming with AI-generated material, giving each a defined job.
Scoping a project?
Reading definitions because you are scoping a project? Skip ahead and just ask.