LaserDisc is an optical disc storage format that was introduced in 1978. It was primarily used for storing video and audio, offering better quality than VHS tapes. The discs are large, about 12 inches in diameter, and can hold up to 60 minutes of video on each side. Despite its high-quality playback, LaserDisc never gained widespread popularity due to its high cost and the emergence of more convenient formats like DVD. It was mainly used by collectors and in professional settings, such as film schools and video rental stores, until it was phased out in the early 2000s.