What Is B-Roll Footage? A Creator's Guide

B-roll footage, defined

So what is b-roll footage? It's the supplemental video you cut over your main shots to show what's being talked about instead of just telling it. If a-roll is your subject speaking to camera, b-roll is everything else: the hands typing, the city street, the coffee pouring, the wide shot of the room. It's secondary in name only — b-roll is what turns a talking head into a story people actually watch.

The term is a holdover from the days of physical 16mm film, when editors literally loaded a second reel of footage to splice in over the primary one. The reels are gone, but the idea stuck: you always want more than one visual layer to build from.

Done well, b-roll hides your edits, sets a mood, and gives the viewer's eyes somewhere to go. Done poorly — or skipped entirely — your video feels flat, static, and hard to sit through.

B-roll vs a-roll: the difference

The cleanest way to remember b-roll vs a-roll: a-roll tells, b-roll shows. A-roll carries the spine of your video — the interview, the narration, the on-camera host driving the message. B-roll illustrates and supports it.

Say your a-roll is someone describing how they bake sourdough. The b-roll is the flour hitting the bowl, the dough stretching, the loaf sliding out of the oven. You hear the story on the a-roll; you feel it on the b-roll.

In practice, most modern creators don't say "a-roll" much anymore — they just call it their main footage or interview. But the two-layer thinking is exactly what separates amateur video from professional work. One layer is a recording. Two layers is editing.

How to use b-roll in an edit

Knowing how to use b-roll is mostly about knowing where it earns its place. A few reliable jobs it does:

• Hide your cuts. When you trim a rambling sentence out of an interview, the picture would jump. Lay b-roll over that moment and the cut becomes invisible.
• Establish a location. Open a scene with a wide shot of the building or street so viewers know where they are before the action starts. This is the classic establishing shot, and b-roll is where it lives.
• Set the tone. Slow, moody shots read differently than quick, bright ones. Your b-roll choices tell the audience how to feel.
• Cutaway for emphasis. When your subject mentions a specific object or detail, cut away to it. The cutaway reinforces the point and adds rhythm.

The editing rule of thumb: match the b-roll to the words. If the a-roll says "we packed up the whole studio," show the boxes. Literal-but-not-boring beats pretty-but-irrelevant almost every time.

How to shoot b-roll

Good b-roll starts before you press record. Here's how to shoot b-roll that's actually usable in the edit.

Plan a shot list. Watch your a-roll (or read your script) and jot down every noun and action worth showing. That list becomes your b-roll to-do. Planning your visuals ahead of time is the same discipline behind planning scenes for a short film — decide the shots before you're on location.

Overshoot, and hold each shot. Let every clip run 10–20 seconds, longer than you think you need. Editors want options, and a shot that ends a beat too early is useless. Pros routinely capture four to six times the footage the final video will use.

Vary your angles and sizes. Grab a wide to place the viewer, a medium for context, and a tight close-up for detail. Mixing camera shot types gives your edit a natural sense of movement and lets you cut without repeating yourself.

Keep it steady and motivated. Lock off a tripod or use slow, deliberate moves — a gentle push or pan reads as intentional; a shaky handheld wobble reads as a mistake. Every move should have a reason.

B-roll footage ideas to steal

Stuck for what to point the camera at? These b-roll footage ideas work across almost any video:

• Hands doing the work — typing, writing, cooking, assembling. Detail shots are gold.
• Establishing exteriors — the storefront, skyline, or doorway that opens a scene.
• Environmental texture — steam rising, rain on glass, light through blinds, a busy street.
• Reaction and process — someone thinking, reacting, or moving through a routine.
• The object being discussed — a product, a tool, a photo, a screen.
• Transitions — a door opening, a car passing, someone walking out of frame to bridge two scenes.

When in doubt, ask: "What would I want to see while this sentence is being said?" Then go shoot that.

Generating b-roll with AI

Here's the modern shortcut: you no longer have to own a camera to get clean b-roll. With Scriptly, you describe the shot in plain language and the AI director generates a short clip for it — the establishing wide, the moody close-up, the process shot — with consistent characters and locations across scenes.

That means you can fill gaps in an existing edit or build a whole piece shot by shot, then render it with voiceover, captions, and music. If you're assembling something bigger, our guide to making an AI short film walks through the full workflow. The two-layer thinking stays the same; only the way you source the footage changes.

B-roll is the difference between a video people click away from and one they finish. Plan it, shoot plenty of it, and cut it in with intent — or start generating your own shots in Scriptly and skip the camera entirely.