It Isn't Dialogue
Narration is different from dialogue in that the speaker or actor is not usually seen delivering the lines. First-person narration is when the voice-over is that of one of the characters in the film, usually one of the main characters. Third-person narration is when the voice-over is from an observer’s viewpoint.
Narration is often used to introduce a story, provide backstory, express the thoughts or the emotions of a character, explain a flashback, flash-forward or even the plot and sometimes to finish a story.
Narration is an acceptable part of filmmaking. It’s a common convention in ...