Color Keying (Green/Blue Screen) Color Keying (also known as chroma key, green screen or blue screen) is a special effect/post-production technique used to composite two clips together.
Beside this, why do they use green screens instead of blue?
Green is the go-to because it doesn't match any natural skin tone or hair color, meaning no part of an actor will be edited out through chroma key. When a green costume or prop is essential, a blue screen is often substituted.
What does a blue screen do?
A stop error, better known as a Blue Screen of Death (also known as a blue screen or BSOD) is an error screen displayed on a Windows computer system after a fatal system error, also known as a system crash: when the operating system reaches a condition where it can no longer operate safely.
What is blue screen effect?
Chroma key compositing, or chroma keying, is a visual effects/post-production technique for compositing (layering) two images or video streams together based on color hues (chroma range). When using a blue screen, different weather maps are added on the parts of the image where the color is blue.