B-roll is a term used in the film and video production industry to refer to supplementary footage that is used to support or enhance the main narrative of a scene or story. B-roll is typically used in conjunction with main footage, or “A-roll,” which is the main focus of the scene or story.

There are a number of different ways that b-roll can be used in filmmaking. One common use is to provide visual context or background information for a scene. For example, if a character is talking about a particular location, b-roll of that location could be used to help establish the setting and give the audience a better sense of the place. B-roll can also be used to show actions or events that are occurring simultaneously with the main footage, or to provide a different perspective on the events that are taking place.

B-roll can also be used to add visual interest and variety to a film or video. By cutting between different shots and angles, filmmakers can create a more dynamic and engaging viewing experience for the audience. B-roll can also be used to cover up cuts or transitions between different shots, or to provide a break from the main footage if it becomes too monotonous.

Overall, b-roll is an important tool in the filmmaker’s toolkit, and is used to enhance and support the main narrative of a film or video. Whether used to provide context, show simultaneous actions, or add visual interest and variety, b-roll helps to create a more dynamic and engaging viewing experience for the audience.