LOS ANGELES (AP): Viacom Inc. and five Hollywood studios are joining forces to create a television channel and video-on-demand service, the companies announced Sunday. The venture, starting in fall 2009, will show movies and television series from Paramount, Paramount Vantage, MGM, United Artists and Lionsgate. It could provide competition in both programming and viewers to Time Warner's HBO and CBS Corp.'s Showtime. This venture has the potential to be a game changer for the industry,'' Viacom president and CEO Philippe Dauman said in a statement. We are building an innovative service that will use traditional and new digital distribution technologies to bring great film and television entertainment directly to the consumer.'' Viewers will have pay-per-view access to big-budget releases from the studios, such as Cloverfield,'' Iron Man'' and Star Trek.'' Movies from the companies' archive libraries and new TV series created by the studios also will be featured. The combined companies have a collection of thousands of films and hundreds of TV shows. MGM owns the world's largest modern film library, comprising titles from United Artists, Orion Pictures and other studios. Paramount has 3,500 motion pictures in its library, including recent blockbusters such as Transformers'' and Beowulf'' and Oscar winners There Will Be Blood'' and No Country for Old Men.'' Viacom owns the content of more than 100 television channels, including MTV, VH1, CMT, Nickelodeon and Comedy Central. Viacom will provide marketing and other operational support through its MTV Networks division.