A.D. Vision (simply known as ADV and also referred to as ADV Films) is an American multimedia entertainment studio that served as the largest American and British anime distributor in the late 20th to early 21st centuries. Headquartered in Houston, Texas, ADV Films was formed in 1992 by video game fan John Ledford and anime fans Matt Greenfield and David Williams. The company spent the next 17 years in the fields of home video production and distribution, broadcast television, theatrical film distribution, merchandising, original productions, magazine and comic book publishing. In 2002, most of ADV Films' back catalog were used to program its new channel, the Anime Network.