major films, key personnel are often contractually required to participate in promotional tours in which they appear at premieres and festivals and sit for interviews with many TV, print, and online journalists. The largest productions may require more than one promotional tour, in order to rejuvenate audience demand at each release window. Since the advent of home video in the late 1970s, most major films have followed a pattern of having several distinct release windows. A film may first be released to a few select cinemas, or if it tests well enough, may go directly into wide release. Next, it is released, normally at different times several weeks (or months) apart, into different market segments like rental, retail, pay-per-view, in-flight entertainment, cable television, satellite television, or free-to-air broadcast television. The distribution rights for the film are also usually sold for worldwide distribution. The distributor and the production company share profits and manage losses. Independent filmmaking Filmmaking also takes place outside of the mainstream and is commonly called independent filmmaking. Since the introduction of DV technology, the means of production have become more democratized and economically viable. Filmmakers can conceivably shoot and edit a film, create and edit the sound and music, and mix the final cut on a home computer. However, while the means of production may be democratized, financing, traditional distribution, and marketing remain difficult to accomplish outside the traditional system. In the past, most independent filmmakers have relied on film festivals (such as Sundance Film Festival, Venice Film Festival, Cannes Film Festival, and Toronto International Film Festivals) to get their films noticed and sold for distribution and production. However, the internet has allowed for the relatively inexpensive distribution of independent films on websites such as YouTube. As a result, several companies have emerged to assist filmmakers in getting independent movies seen and sold via mainstream internet marketplaces, often adjacent to popular Hollywood titles. With internet movie distribution, independent filmmakers who choose to forego a traditional distribution deal now have the ability to reach global audiences. See also 35 mm film 3D film Audiography Cinematic techniques Digital cinema Experimental filmmaking Film colorization Film industry Filmmaking technique in Kurosawa Filmmaking technique of Luis Buñuel Film poster Film school Film studies Film title design Film trailer First-look deal Glossary of motion picture terms Housekeeping deal List of film topics Motion Picture Association of America Motion picture content rating system Movie production