A music video is a short film or video that accompanies a complete piece of music/song. Modern music videos are primarily made and used as a marketing device intended to promote the sale of music recordings. Although the origins of music videos go back much further, they came into their own in the 1980s, when MTV based their format around the medium, and later with the launch of VH1. The term "music video" first came into popular usage in the early 1980s. Prior to that time, these works were described by various terms including "filmed insert", "promotional (promo) film", "promotional (promo) clip" or "film clip". In Chinese entertainment, music videos are simply known as MTVs because the network was responsible for bringing music videos to its popularity.