- stock footage from film or digital libraries used to establish locale, atmosphere, etc., or to provide generic thematic video, such as for a category of television news story.
- video footage shot for a story, television show, or film, often by a secondary film crew, especially depicting building exteriors and used to establish the locale in which a film or show is set: The actors all filmed in Toronto, but the show’s opening theme song played over B-roll of the New York skyline and a block of brownstones.