Compositing and Chroma Key

What is compositing

 Compositing is where you combine multiple layers to blend live action footage with computer generated imagery.

Effects to help your composition to be more lifelike:

Tint - 'map black to' and 'map white to' to the darkest and lightest areas of the live action footage then set the amount to around 25%

Blur and sharpen - 'fast blur' - blurriness set to around 1 to 1.5

Noise and grain - 'match grain' - select noise source layer and set your footage, 'veiwing mode' set to 'final output'

Colour correction - 'Lumetri colour' lower the saturation to help blend.


What is chroma key

Filming live action for compositing generally will involve chroma key, also known as green screen. Once filmed, the clip will be keyed out cutting the subject from the background ready to be composited into the scene being created.





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