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B-roll is the cutaway footage that plays over your main shot — the product close-up, the screen recording, the room shot — while the interview audio keeps running. This page is about the task, not the definition: put cutaways on a talking-head timeline, say how often the picture should change, and replace any shot that does not fit. Video generation requires membership.
STEP 01
Add the recorded take first and let it load. Placement is only as good as the transcript underneath it.
STEP 02
Point the B-roll step at your own footage and images, and describe how often the picture should change and what each section should show.
STEP 03
Check every cutaway against what is being said, swap or delete the ones that misfire, then look at captions and sound before exporting.
B-roll is supporting footage that sits over the main audio: the cutaway, the close-up, the screen capture. The recorded take carrying the speech is the A-roll. Replacing the speaker with a graphic, a caption or a still is often called the same thing, but those are overlays rather than cutaways, and they behave differently on the timeline — an overlay sits on top of the frame, a cutaway replaces it.
Use the product images and footage you already have where they exist, and fill the remaining coverage with generated visuals. Generated shots need a closer review than your own: check that the product looks right, that hands and on-screen text are not garbled, and that the shot does not contradict what the narration says at that second.
Ask for a picture change every few sentences rather than a new visual on every beat — a cutaway that arrives mid-word reads as a mistake. Preview the sequence with the sound on. A plain shot that covers a weak transition is worth keeping; a prettier shot that lands on a key sentence is not.
Common questions about this task, its limits and how to judge the result.
B-roll is supplemental footage used to support the main shot, often showing an object, place or action mentioned in the narration.
In filmmaking, B-roll means supplemental footage that supports the main shot; it is not usually slang. The intended meaning can depend on the context where the term appears.
Common examples include product close-ups, demonstrations, screen recordings, location shots and details that match what the narration describes.
A-roll usually means the primary footage, while B-roll means supplemental or cutaway footage. C-roll is used inconsistently, so its meaning can vary by production team.
