How Much B-Roll Should You Film?

B-roll is supporting footage placed alongside the main action, interview, explanation or performance. It might show the object someone describes, the place where an event occurs, a hand completing a step or a reaction that changes the scene. It is useful when it adds evidence, orientation, action or feeling. It is not a required decoration or a command to cut away after a fixed number of seconds.

Ask what a viewer cannot yet see. In a tutorial, that may be the result of a step. In a review, it may be the surface, controls or limitation you are judging. In a vlog, it may be the transition between places or an ordinary detail that reveals your point of view. A comedy sketch may need a prop insert or reaction; a still two-person scene may not need any extra shot.

Watch or outline the main take and write a specific missing question for each possible cutaway: What changed? What does the product actually do? Where is the person standing? Which action proves the result? This is more useful than a generic list of pretty shots. For an unpredictable documentary or challenge, note the process and context you may need, then respond to the real event rather than staging evidence of an outcome you do not know.

Group nearby shots while you are in the location. A wide view can place the action, a medium view can show the person doing it, and a close view can reveal the detail, but you may need only one of them. Hold the shot long enough to contain the action with a little lead-in and end. Check focus, background and sound if the cutaway's ambient audio matters. Film a genuine alternative when an angle blocks information, not five near-identical versions by habit.

A planned product detail can often be filmed later in the same conditions. A documentary participant's reaction or a challenge result cannot be re-created and passed off as the original event. If a later illustration is necessary, make that clear through the edit or narration. For a review, do not use a close-up of a different item as evidence. The relationship between image and claim must stay honest.

If you are filming alone, capture the essential speaking or performing take first, then inspect it for missing visuals. This prevents a long B-roll session from exhausting time, battery or attention before the central work exists. On a phone, a stable position and good light often matter more than a lens accessory.

Check the list against the footage. Can the edit show the necessary action or place without misleading the viewer? Are there enough distinct shots to bridge the known gaps? If yes, stop. More footage has storage and review costs, and can make it harder to notice the useful moment. If a gap remains, film that specific answer.

The rough cut may reveal another need later; that is a reason for a targeted pickup, not proof that every shoot should overshoot. A complete video may use no B-roll at all when the primary image and sound already carry its purpose.

These sources support the technical or platform details above. The practical examples are ArcFlo editorial guidance; test them with your own subject, device and conditions.

• Adobe B-roll guide
• Adobe shot-list guide