TVTV (short for Top Value Television) was a San Francisco-based pioneering video collective founded in 1972 by Allen Rucker, Michael Shamberg, Tom Weinberg, Hudson Marquez and Megan Williams. Shamberg was author of the 1971 "do-it-yourself" video production manual Guerrilla Television. Over the years, more than thirty "guerrilla video" makers were participants in TVTV productions. They included members of the Ant Farm: Chip Lord, Doug Michels, Hudson Marquez and Curtis Schreier; the Videofreex, Skip Blumberg, Nancy Cain, Chuck Kennedy, and Parry Teasdale. TVTV pioneered the use of independent video based on wanting to change society and have a good time inventing new and then-revolutionary media, ½" Sony Portapak video equipment, and later embracing the ¾" video format.