Bola are network news tracks
I think you meant to say "B-roll"!
B-roll is a term used in the film and television industry to describe supplementary footage that is used to support the main action or dialogue in a scene. In the context of network news, B-roll refers to the background footage or video clips that are used to illustrate a news story or provide visual interest to a broadcast.
B-roll can include a wide range of footage, such as:
- Stock footage: pre-recorded video clips that are licensed for use in a news broadcast
- Raw footage: footage shot by a news crew or freelancer that is not part of the main story
- Archive footage: footage from previous news stories or events that is used to provide context or illustrate a point
- Graphics and animations: visual elements that are used to enhance the storytelling or provide additional information
B-roll is often used to:
- Add visual interest to a news story
- Provide context or background information
- Illustrate a point or concept
- Break up a long segment of talking heads or narration
- Create a sense of atmosphere or mood
In network news, B-roll is typically shot by a team of videographers, photographers, or freelancers who are assigned to cover a specific story or event. The footage is then edited into the final broadcast along with the main story and narration.