ABSTRACT
Film is a mechanical and photochemical motion picture system. To create the image, a film camera gathers light from the outside world through its lens, and focuses that image onto the film to create individual exposures, called frames-one after another. While film cameras and cinematography emerged from the world of still photography, the ancestor of modern video technology is radio. For most of its history, video was an analog medium. The National Television Standards Committee (NTSC) broadcast standards were devised in the analog video era; however, as people entered the 21st century video production was transformed by the digital revolution. Digital video (DV) and audio involves creating, recording, and disseminating video and audio by transforming light values and acoustic energy into binary code, or a series of ones and zeros. In the United States, video standards are devised and standardized by a consortium of engineers, telecommunications companies, and government policy makers called the Advanced Television Committee.
