Where does the b-roll come from?

A library of millions of licensed stock clips and images, plus AI-generated images for subjects stock does not cover. Both are selected against your script rather than pulled from a generic keyword search.

How is this different from Smart B-Roll?

They work together: this page covers where the visuals come from, and Smart B-Roll covers how each one is matched to a line of the narration.

Do I need to license the footage separately?

No. The stock footage is licensed for use in videos produced through ShortFast, so there is nothing separate to clear or attribute.

Can I use my own footage instead?

Yes. Upload your own clips and swap them into any scene. For anything where authenticity carries the claim, such as a real product or location, your own footage is more persuasive than stock or generated visuals.

FeatureCapabilityUpdated Nov 5, 2026

B-Roll Generator: Relevant Visuals That Keep Viewers Watching

Automatically add contextual b-roll to every scene of your videos. ShortFast picks from a library of millions of licensed stock clips and images, with nothing to attribute, and generates an AI image for any scene no real footage fits, timing each one to the narration to hold attention on TikTok, Reels and Shorts. Swap any shot or upload your own. Then AI edit can add overlays that illustrate your talking points: big hook words, counters and charts, maps with pins and labels, timed to the voice.

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What you get

Inside B-Roll Generator

Stock footage and AI-generated b-roll combined seamlessly

Automatic timing aligned to your script and narration

Extensive library of licensed stock clips and visuals

Swap any shot or upload your own footage

Reduces production time from hours to minutes

Overlays that illustrate your talking points, with AI edit

FAQ

Common questions

Where does the b-roll come from?: A library of millions of licensed stock clips and images, plus AI-generated images for subjects stock does not cover. Both are selected against your script rather than pulled from a generic keyword search.
How is this different from Smart B-Roll?: They work together: this page covers where the visuals come from, and Smart B-Roll covers how each one is matched to a line of the narration.
Do I need to license the footage separately?: No. The stock footage is licensed for use in videos produced through ShortFast, so there is nothing separate to clear or attribute.
Can I use my own footage instead?: Yes. Upload your own clips and swap them into any scene. For anything where authenticity carries the claim, such as a real product or location, your own footage is more persuasive than stock or generated visuals.

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B-Roll Generator: Relevant Visuals That Keep Viewers Watching

Inside B-Roll Generator

Common questions

Explore the full toolkit

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Smart B-Roll

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