What is the effect of using a voiceover in a film?

Using a voiceover in a film enhances the storytelling by providing deeper insight into a character's thoughts, emotions, or motivations that may not be easily conveyed through visuals alone. This technique can add layers of complexity, allowing the audience to understand the internal conflicts or narratives that drive the plot. By bridging the gap between what is seen on screen and what is being felt internally by the characters, the voiceover can enrich the viewing experience and make the story more engaging. It can also provide context or background information that may be critical for audience comprehension and emotional investment in the narrative.