Original footage, not stock
AI B Roll Generator: Custom B Roll Video and AI Stock Footage from Text
Describe the shot you need and get an original 4 to 12 second clip back. No library search, no license tracking, no settling for the closest match someone else already used.
The short answer
An AI b roll generator creates supporting footage from a written description instead of pulling it from a stock library. VideoMake renders original 4, 8 or 12 second clips at 720p or 1080p, natively in 16:9 or 9:16, so the shot matches your script exactly. Most tools marketed as b roll generators do something different: they scan your transcript and insert existing stock clips. That is fast, but the footage is not yours and thousands of other videos use it.
Last updated September 2026
4, 8, 12s
Clip lengths, the usual range for a b roll cutaway
1080p
Maximum output resolution on the Pro plan
16:9 / 9:16
Native aspect ratios, no cropping a wide clip down
$24/mo
Plus plan billed annually, credits included
Generated b roll compared with stock b roll
These are two different products that get sold under the same phrase. Which one you want depends on how specific your shot is. Here is an honest read on both, including where stock still wins.
| Factor | Generated b roll (VideoMake) | Stock b roll libraries |
|---|---|---|
| Shot specificity | You describe the exact subject, setting and camera move, and get that shot | You take the closest match that exists in the catalog |
| Exclusivity | Every clip is rendered fresh for your prompt | Popular clips appear in thousands of other videos |
| Real people and real places | Weaker. Generated footage is synthetic, so it cannot show a real location or a named person | Stronger. Real cities, real landmarks, real documentary footage |
| Clip length | 4 to 12 seconds, which covers a standard cutaway | Often 10 to 30 seconds, more headroom for long holds |
| Turnaround | Minutes, including the time to refine the prompt | Instant download, but the search itself takes time |
| Licensing overhead | No per clip license to track on a paid plan | Editorial versus commercial licenses, model releases, seat limits |
| Cost shape | Credits, so you pay per clip you actually render | Annual subscription whether you download or not |
The practical split: if the shot is a real place or a real event, license stock. If the shot is a concept, a mood, a product in an imagined setting, or something too specific to exist in a catalog, generate it. Most editors end up using both in the same timeline.
How to generate b roll from a text prompt
Find the gap in your edit
Play back your rough cut and mark every place the picture goes static while the audio keeps going. Those marks are your shot list. Note how many seconds each gap needs, because a 4 second clip and a 12 second clip cost different amounts of credit.
Write the shot, not the topic
Prompts that name a subject, a setting, a camera move and a lighting condition come back usable far more often than prompts that name a topic. Compare "small business" with "close up of hands counting receipts on a wooden counter, warm morning light, slow push in". The second one is a shot.
Set the frame before you render
Pick 16:9 for YouTube and web, 9:16 for Shorts, Reels and TikTok. Generating natively in the target ratio beats cropping later, because the model composes the subject for that frame instead of leaving it half outside the crop.
Render a couple of takes, then cut
Treat generation like shooting coverage. Render two takes of an important shot, drop both on the timeline and keep the one that cuts cleanly against the surrounding footage. Download and edit in whatever NLE you already use.
Who gets the most out of a b roll generator
Video editors on client work
When the brief calls for a shot the client never filmed and the budget will not cover a reshoot, generating the cutaway is the difference between delivering and asking for an extension.
Marketing teams publishing weekly
A weekly cadence burns through stock fast, and the recognizable clips start showing up in competitor videos too. Generated cutaways keep the visual identity yours.
Agencies billing per deliverable
Credits map cleanly onto jobs, so the footage cost for a specific deliverable is a number you can put on an invoice instead of a shared annual subscription you have to allocate.
Course and training producers
Talking head lessons hold attention better with a cutaway every 30 to 60 seconds. Generated b roll fills those beats without a second shoot day. Pairs well with our AI video generator for course creators.
Short form channel operators
Vertical formats punish cropped footage. Native 9:16 generation keeps the subject centered in frame, which matters more on a phone than resolution does. See the AI short form video generator.
Product and ecommerce video
Lifestyle context shots around a product, the kind of footage that would need a location and a model, can be generated to sit between your real product shots.
Two kinds of tool are sold as an AI b roll generator
It is worth being precise about this before you pay for anything, because the two categories solve different problems and the marketing language is nearly identical.
The first kind is an automatic b roll inserter. You upload a finished talking head video, the tool transcribes it, picks out keywords, and drops matching stock clips from a licensed library over your timeline. Captions, OpusClip, Vizard and Kapwing all work this way. The value is speed and automation: you get a b roll pass on a 10 minute video without touching a timeline. The limit is that the footage comes from a shared catalog, so the tool can only reach for something that already exists, and a keyword match is not the same as the right shot.
The second kind, which is what VideoMake does, generates the footage. There is no catalog to search. You write what the shot should contain and the model renders it. That takes a little more thought per clip, since you are directing rather than picking, but it removes the ceiling: if you can describe it, you can get it, including shots that no stock library would ever have commissioned.
If your main problem is "I have 40 minutes of talking head and no time", an inserter is the better buy. If your problem is "the shot I need does not exist", generation is the only option that solves it. Plenty of editors keep one of each.
Questions people ask before buying
Can AI generate B-roll footage?
Yes. A generative AI b roll generator creates the footage itself from a written description, rather than searching a stock library for something close. You describe the shot, including subject, setting, camera move and lighting, and the model renders an original clip. VideoMake produces 4, 8 or 12 second clips at 720p or 1080p.
Is AI generated B-roll copyright free?
Clips you generate on a paid VideoMake plan are yours to use commercially, including in client work and monetized channels. Because the footage is generated rather than licensed from a stock library, there is no per clip license to track and no attribution requirement. Our terms set out the full grant, and it is worth reading before you put generated footage in a paid client deliverable.
How much does an AI B roll generator cost?
VideoMake runs on credits. The Plus plan is $49 per month, or $24 per month billed annually, and the Pro plan is $149 per month, or $74 per month billed annually, which is what unlocks 1080p output. A 4 second clip costs 4 credits, so a Plus month covers roughly a dozen short cutaways. Current plans are on the pricing page.
Can I use AI B-roll in monetized YouTube videos?
Yes, on a paid plan. YouTube asks that monetized uploads add original value rather than being mass produced repetitive content. AI b roll cut into your own narration, commentary or tutorial clears that bar comfortably, because the video is yours and the footage is supporting it. A channel that uploads nothing but unedited generated clips is the case that runs into trouble.
Does AI B-roll work for vertical 9:16 video?
Yes. VideoMake generates natively in 9:16 as well as 16:9, so vertical clips are composed for the vertical frame instead of being cropped out of a wide shot. That matters more for b roll than for talking head footage, because cropping a 16:9 landscape clip to 9:16 usually cuts the subject in half or leaves it stranded at the edge.
How long does it take to generate a B roll clip?
A single clip renders in a few minutes. In practice, budget for two or three takes on the shots that carry weight, the same way you would shoot coverage. The realistic comparison is not against a stock download, it is against the hours a library search takes when the catalog does not have your shot.
What is the best AI B roll generator?
It depends on which problem you have. For automatically inserting stock cutaways into long talking head footage, the transcript driven tools do that job well. For producing a specific shot that does not exist yet, you need a generator rather than an inserter, which is where VideoMake fits. Judge any option on whether it creates footage or retrieves it.
Generate the shot your edit is missing
Describe the cutaway you need and render it in the next few minutes. No library search, no license admin, no reshoot.
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