Definitions for "Voiceover"
A recorded tag that is heard during the final few seconds of a spot. We don't recommend this type of tagging due to cost.
Narration added to and somewhat louder than background music or sounds.
background voices for radio or video recorded separately in a recording studio and dubbed onto visual.
Keywords:  speakers, lip, audio, video, movements
Adding audio to a video where you cannot see the speakers' lip movements.