The script annotation is v.o. A character's voice is heard over the top of a scene. This is most commonly used to narrate part of the story. The speaker will not be shown.
                                                            
                                                     
                        
                                                
                        
                        
                            The recording of vocal announcements over a bed of music in commercials.
                                                            
                                                     
                        
                                                
                        
                        
                            A reporter's or other talent's recorded script used to run over broadcast news pieces as well as commercials.
                                                            
                                                     
                        
                                                
                        
                        
                            A narrative or announcer dialog that floats over visual elements. Recorded in a studio and added to video/film track. Talent is not seen on camera and voice is unattached or over the on camera audio and visual elements.
                                                            
                                                     
                        
                                                
                        
                        
                            In television, a voice over is used as a linking device between scenes.
                                                            
                                                     
                        
                                                
                        
                        
                            The narrative portion of a commercial or promo; usually recorded by an announcer and including vital information for the spot.
                                                            
                                                     
                        
                                                
                        
                        
                            (V.O) - a character's voice over heard during a scene in which generally the character is not shown.
                                                            
                                                     
                        
                                                
                        
                        
                            two meanings… a short on-air piece (see AVO), or the reporter’s spoken script in a report/pack
                                                            
                                                     
                        
                                                
                        
                        
                            A voice that is experienced off a screen. A narrative of the story or plot.