B-roll is the extra footage that plays while you're talking or narrating, things like close-ups, scenery, or clips of what you're describing. It's what makes a video feel put-together instead of just one person talking at the camera the whole time.

Why do videos need B-roll?

Watching one shot for too long gets boring fast, most people stop paying attention within a few seconds. B-roll breaks that up by giving the viewer something new to look at every few seconds, which keeps them watching longer.

What's the difference between AI-generated and real footage B-roll?

Real footage B-roll comes from actual video, filmed by someone. AI-generated B-roll is created from scratch by AI based on a description. Both can work, real footage tends to look more natural, AI-generated is useful when no real clip fits.

Can I plan my B-roll before I film anything?

Yes. If you paste in a script, SpyReels finds matching footage for it before you've recorded a single second, so you know exactly what shots you need going into filming.

Is the B-roll generator free?

Yes. You can paste a script or upload a video and generate a watermarked preview with no account and no credit card. Signing up (also free) removes the watermark and saves your project. You only pay when you download the full-resolution file.

Do I need to sign up to try it?

No. Generating a preview works with no login. You'll only be asked to sign up if you want to save your project or remove the watermark, and to pay only when you're ready to download the final file.

Do I need to upload a video, or can I just paste a script?

Either works. Paste a script to get B-roll matched before you film, or upload a video you've already recorded and SpyReels will transcribe it and match B-roll to your existing footage.

Where does the AI-generated B-roll come from?

SpyReels matches your script or transcript to real stock footage, or generates an original AI video clip when no strong stock match exists.

Can I use this for YouTube Shorts or TikTok?

Yes. The generator supports vertical, horizontal, and square output so clips fit Reels, Shorts, TikTok, and standard YouTube without manual reformatting.

What is different about the free preview?

Free previews include a SpyReels watermark overlay so you can judge the match quality before paying. Downloads after payment are watermark-free. There is no resolution or duration cap on the free preview.

Does the free preview expire or get deleted?

Previews generated without an account are session-based and not saved. Sign up free to keep your project and come back to it later.

Do I need video editing experience?

No. The AI handles beat detection and clip matching automatically. You review the result and download, no timeline editing required.

What video formats can I upload?

MP4 and MOV are supported for the video-upload mode. Uploaded audio is automatically transcribed to detect beats.

How is this different from just searching for stock footage myself?

SpyReels reads your full script or transcript, breaks it into the specific visual beats that need footage, and searches and places multiple matched clips automatically instead of manually reading each line and searching stock libraries one keyword at a time.

Free AI B-Roll Generator

Paste your script, or upload footage you've already shot. SpyReels matches every beat to real footage automatically and turns it into a fully B-rolled video.