AI B-Roll Generator
Describe the cutaway your edit is missing and render it in a couple of minutes. Every clip is royalty-free, cleared for commercial use, and made for your video rather than pulled from a catalogue thousands of other people have already used.
New accounts start with 100 credits, and nothing rendered here carries a watermark.
HOW IT WORKS
Three steps from a sentence to a usable cutaway
- 01
Describe the shot
Name the subject, the camera move and the light: "slow dolly past a barista steaming milk, warm window light, shallow depth of field". Editing vocabulary works — close-up, aerial, handheld, locked off — because that is the language the models were trained on.
- 02
Set the model, size and length
Pick an aspect ratio that matches your timeline, a length near what the cut needs, and a model. Starting at the smallest size keeps the loop cheap while you find the right prompt; re-run at full size once the framing is right.
- 03
Render and drop it in
Clips render in the background, so you can queue the eight or ten cutaways a finished minute needs and leave the page. Everything lands in History, ready to download and cut in. A render that fails returns its credits automatically.
WHAT TO GENERATE
The b-roll a finished video actually runs on
Every category below is a browsable set of prompts you can open, edit and send straight to the generator. They cover the shots that carry a voiceover, cover a jump cut, or set a mood before the next talking-head segment.
MODELS
What each model gives you
The same prompt behaves differently on each one, and the cheapest is rarely the wrong answer for b-roll — a two-second cutaway under a voiceover is not where a viewer studies the picture.
| Model | Length | Resolution | Aspect ratios | Reference image | Typical render |
|---|---|---|---|---|---|
| Seedance 2 Mini | 4–15s | 480p, 720p, 1080p | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | Yes | ~4.5 min |
| H3 Max | 5–15s | 480p, 768p | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | Yes | ~0.5 min |
| H3 Max Turbo | 5–15s | 480p, 768p | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | — | ~0.5 min |
| ClipBee 1.0 | 15s and up * | 720p | 16:9, 4:3, 3:4, 9:16 | Yes | ~6 min |
* Length is a target, not a setting — the model picks its own cut and the bill follows the finished clip.
GENERATE OR SEARCH
Why generate b-roll instead of searching for it
Stock libraries are still the right answer for real places, real events and real people. For everything else, the arithmetic has changed.
Getting the exact shot you described
- Generated here
- The prompt is the shot. Wrong framing? Change a word and run it again.
- Stock library
- You take what was filmed, or you settle for the nearest thing in the catalogue.
Vertical for Reels, TikTok and Shorts
- Generated here
- 9:16 is composed that way from the prompt, not cropped after the fact.
- Stock library
- Most of the catalogue was shot wide, so vertical means cropping into someone else’s framing.
Filling a minute of finished video
- Generated here
- Write the cutaways, send them at once, and they render in parallel.
- Stock library
- One pair of eyes, section by section, and an afternoon gone.
How common the clip is
- Generated here
- Rendered from your prompt, so nobody else is publishing the same file this week.
- Stock library
- Popular clips get licensed thousands of times, including by your competitors.
Something nobody filmed
- Generated here
- Your product, an invented place, a stylised sequence — it renders the same way anything else does.
- Stock library
- If it was never shot, it is not there to license.
FAQ
Using the b-roll generator
What makes a good b-roll prompt?
Three things, in this order: the subject and what it is doing, the camera move, and the light. "Hands kneading dough on a floured counter, slow push in, hard afternoon window light" gives the model everything it needs. Vague prompts get generic results — "a busy office" is a coin flip, "over-the-shoulder shot of a designer scrubbing a video timeline, monitors glowing in a dim room" is a shot. Adjectives about mood do less work than nouns about what is in frame.
How long should each generated b-roll clip be?
Shorter than you think. A cutaway under a voiceover typically holds the screen for two to four seconds, so the shortest length on offer already gives you room to trim on both ends. Longer clips cost proportionally more and mostly produce footage you will cut away. Generate long only when the shot itself is the point — a slow reveal, a continuous camera move you want intact.
Can I generate b-roll that matches footage I already shot?
Upload a frame from your own footage and the model holds onto its subject, lighting and camera angle instead of inventing new ones. Use it as a first frame when you want the generated clip to continue from that exact image, or as a reference when you want a new shot in the same look. Not every model reads a reference tray — the table above says which do.
Can ClipBee add b-roll to a video I already made?
No, and it is worth saying plainly because several tools with near-identical names do exactly that. ClipBee renders new clips from a written description — it does not open your finished cut, find the gaps and drop footage into them. If that is what you are after, an editor-side tool like Opus Clip, Submagic or Kapwing is the right shape and you will get there faster. ClipBee is the step before: producing a shot that exists in no library, which you then cut in yourself. Plenty of people use both.
How many cutaways does a finished video need?
A talking-head minute usually eats eight to twelve. That number is why searching hurts and generating does not: jobs do not queue behind one another here, so writing ten prompts and sending them together costs about as much wall-clock time as sending one. Queue them, leave the page, and collect the lot from History.
Which model should I use for b-roll?
Start on the default. It is the quickest and cheapest per second we carry, which matters when you are rendering ten cutaways rather than one hero shot, and it renders audio in the same pass. Move up when you have a reason: a reference image the default cannot read, a resolution it does not offer, or a shot whose motion it keeps getting wrong. The table above lays out what each one takes.
Do I need an account to generate b-roll?
Yes — a clip is billed to a balance, so it has to belong to someone. Signing up is free and comes with 100 credits, enough to render several cutaways at the smaller sizes and decide whether the output is good enough for your edit before paying for anything.
Write the shot you are missing
New accounts get 100 credits, which is enough to watch the generator work before a card is involved.