voice-over
noun
[ ˈvɔɪsˌəʊvə ]
• a piece of narration in a film or broadcast, not accompanied by an image of the speaker.
• "the budget is summarized in a voice-over at the end of the news"
voice-over
verb
• narrate (spoken material) for a film or broadcast as a voice-over.
• "we had to voice-over some passages of dialogue"
