Documentary film
Overview
Documentary films constitute a broad category of nonfictional motion pictures intended to document some aspect of reality, primarily for the purposes of instruction or maintaining a historical record. A 'documentary film' was originally shot on film stock
Film stock
Film stock is photographic film on which filmmaking of motion pictures are shot and reproduced. The equivalent in television production is video tape.-1889–1899:...

 — the only medium available — but now includes video
Video
Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images representing scenes in motion.- History :...

 and digital
New media
New media is a broad term in media studies that emerged in the latter part of the 20th century. For example, new media holds out a possibility of on-demand access to content any time, anywhere, on any digital device, as well as interactive user feedback, creative participation and community...

 productions that can be either direct-to-video
Direct-to-video
Direct-to-video is a term used to describe a film that has been released to the public on home video formats without being released in film theaters or broadcast on television...

, made as a television program
Television program
A television program , also called television show, is a segment of content which is intended to be broadcast on television. It may be a one-time production or part of a periodically recurring series...

 or released for screening in cinemas.
 
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