Greenscreen

Chroma-keying, often called "bluescreening" or "greenscreening", is the process of filming actors, set pieces, and other foreground elements in front of a large solid green or blue-colored screen.

Source: wiktionary

In this tutorial I will be showing you how to do greenscreening in Blender’s Compositor.

Source: wiktionary

Fünke shows off an action-packed highlight clip addressed to Howard that emphasizes his imagined versatility, greenscreening him into scenes where he’s being fired out of a cannon, brandishing dual assault rifles, ineptly playing pick-up football, going Western as a cowboy sheriff and riding a tiger – all set to an aggressive dubstep soundtrack.

Source: wiktionary

Baum makes short and long-form videos showcasing striking and intricate visual effects—like greenscreening himself walking the plank off a skyscraper, editing his friend to look like he’s flying through the clouds, or making an illusion of the “world’s largest tape measure.”

Source: wiktionary