A voice over is a production technique used in the film or radio industry where a voice is pre-recorded.  The recorded voice is played over video images or on the radio stations.  It might sound easy, but there is a lot behind this interesting and amazing industry. There are a lot of jobs as a Acting School San Diego and other parts of the country. You can submit recorded voice to the agencies and they might call you back for casting on commercials. A voice-over is also referred to the actor who does the recording for the reels, videos or images. It can be an announcer, narrator or a voice actor.