colorKey

Makes one colour transparent: a green screen.

import { Clip, Composition, Effect, Keyframe, Track } from "@cutcraft/kit";

// colorKey: Makes one colour transparent: a green screen.
export default function Video() {
  return (
    <Composition fps={30} width={640} height={360}>
      <Track id="main">
        <Clip id="shot" src="asset:coffeeWide" in={4} out={7} fit="cover" />
      </Track>
      <Track id="keyed">
        <Clip id="greenscreen" src="asset:greenscreen" in={0} out={3} fit="cover">
          <Effect id="look" type="colorKey" params={{ color: "#00b140" }}>
            <Keyframe id="k1" param="tolerance" at={0.5} value={0} />
            <Keyframe id="k2" param="tolerance" at={1.5} value={0.3} easing="ease-in-out" />
          </Effect>
        </Clip>
      </Track>
    </Composition>
  );
}

The coffee footage is Pixabay videos 209419 and 209424, under the Pixabay Content License.

Params

Drawn as a shader.

param	type	default
color	string	"#00ff00"
tolerance	number (0..1)	0.3
softness	number (0..1)	0.1
spill	number (0..1)	0.5

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