B-roll & cutaways
Also searched as: b-roll, cutaway, cutaway footage, inserts, supplementary footage
Canonical Definition
B-roll is supplementary footage, device mockups, or motion diagrams cut over primary footage to illustrate the speaker's words and seamlessly conceal edit seams.
45 to 90 frames per B-roll insert (1.5s - 3s)
The term comes from early film editing: A-roll was the primary dialogue reel; B-roll was the secondary reel spliced over it. Beyond illustration, B-roll performs an essential editing function: it hides cuts where the speaker hesitated, repeated words, or made a mistake.
In modern AI-generated video and talking-head cutdowns, synthetic B-roll — animated charts, device mockups, and typographic cards — accounts for 70% of total visual engagement.
Cutaway Cadence & Visual Pacing
When and how frequently to cut away from the speaker
A speaker holding eye contact for more than 4 seconds risks losing mobile viewer attention. Inserting a 2-second B-roll graphic refreshes visual interest while reinforcing the point.
How this works: A dynamic product mockup cutaway inserted over spoken dialogue to prove feature capabilities.
- Covers dialogue audio jump cuts seamlessly
- Illustrates the exact feature described by the speaker
- Maintains continuous background audio while visuals shift
Engineering Guidelines & Common Pitfalls
Best Practices (What to do)
- Match the cutaway arrival precisely to the keyword spoken on the audio track.
Common Failure Modes (What to avoid)
- Irrelevant generic stock B-roll that feels like corporate wallpaper rather than clarifying the idea.
Build b-roll & cutaways in Animatiq
Prompt our motion agent in natural language. Get back typed Remotion React code with custom easing curves, brand palettes, and frame-accurate timing.
Related motion principles
Product demos & devices
Product demos and device scenes present digital software interfaces inside simulated smartphone, tablet, or desktop frames with realistic camera staging and cursor interactions.
Motion & CameraVideo transitions
A video transition is the visual join between two adjacent shots — a cut, wipe, morph, whip-pan, or shader distortion that carries the viewer across a temporal or spatial boundary.
Text & IdentityLower third
A lower third is a graphic overlay positioned in the lower portion of the screen that identifies a speaker, location, or subject without obstructing key facial features.