Voice-over (also known as
off-camera or
off-stage commentary) is a production technique where a voice—that is not part of the narrative (non-diegetic)—is used in a
radio,
television production,
filmmaking,
theatre, or other
presentations. The voice-over is read from a script and may be spoken by someone who appears elsewhere in the production or by a specialist
voice talent. It is usually pre-recorded and placed over the top of a
film or
video and commonly used in
documentaries or news reports to explain information. It may also be read live for events such as award presentations.