Picture-in-picture is a way of presenting video content, which means that one video is played in a full screen while another video is played in a small area of the picture, which is widely used in TV, video recording, monitoring and demonstration equipment.

Picture in Picture (PIP) technology uses the superposition of two video images, one large and one small, to present two video signals at the same time.

Common in TV and monitoring equipment. The source of picture-in-picture video can be different TV channels, video players, surveillance cameras, game consoles and so on.