video on demand

Video on demand (VOD) is a media distribution system that allows users to access television shows, films, and videos digitally on request. These multimedia are accessed without a traditional video playback device and a typical static broadcasting schedule, which was popular under traditional broadcast programming, instead involving newer modes of content consumption that have risen as Internet and IPTV technologies have become prominent, and culminated in the arrival of VOD and over-the-top (OTT) media services on televisions and personal computers.

Television VOD systems can stream content either through a traditional set-top box or through devices such as digital media players, Smart TVs, computers, tablets, and smartphones. VOD users may also permanently download content to a device such as a computer, digital video recorder (DVR) or a portable media player for continued viewing. The majority of cable and telephone company–based television providers offer VOD streaming, whereby a user selects a video programme that begins to play immediately (i.e., streaming), or downloading to a DVR rented or purchased from the provider, or to a PC or to a portable device for deferred viewing.