What is the best AI tool for generating B-roll footage?

The best setup for AI B-roll is an agent-routed workflow rather than a single model: the invideo agent generates B-roll matched to your existing footage via an anchor frame, routes each shot to the right video model — Seedance 2.0, Kling, or Veo — and can produce five distinct B-roll worlds in a single generation request.

Generate your B-roll through the invideo agent instead of prompting one model directly — invideo is an agentic video creation tool with all the current video models available, so the same workflow covers realistic inserts, stylized sequences, and multi-scene coverage without switching platforms.

Match the B-roll to your existing footage with an anchor image. Export the first or last frame of a clip you already shot as a PNG (in Final Cut Pro: File > Share > Save Current Frame), upload it to the invideo agent as a reference, and instruct it to hold that frame's lighting, color, and visual style across every generated clip. This is the documented fix for the editor's core B-roll problem — a scene you forgot to film or coverage you ran out of — because every generated insert cuts against your real footage instead of looking sourced from elsewhere. The finished clips import into your NLE like any other footage; in Final Cut it's the same Command+I import as camera files.

Let the invideo agent route each shot to the right model. Seedance 2.0 generates clips up to 15 seconds with native, contextually relevant atmospheric audio — useful when B-roll needs diegetic sound rather than silent picture. Kling 3.0 generates multi-shot sequences natively, and Veo is available for the same routing. The practical advantage of the agent layer is that you don't have to know which model suits a specific shot: it selects per shot, writes the detailed cinematographic prompt (lens, movement, lighting) from your plain-language direction, and holds your project context so you're not re-describing the look for every clip.

Scale coverage with a dedicated B-roll sub-agent. For volume work, spin up a sub-agent scoped only to B-roll: in one documented 90-second trailer production, one of five specialized sub-agents handled B-roll and title cards exclusively, pulling from the shared project context so its output matched the rest of the production. The invideo agent can also generate five distinct B-roll worlds in a single request, and one production ran four parallel animation sub-agents to animate a batch of still images simultaneously. If you're starting from stills, a camera-operator sub-agent briefed on lens choices and camera movement turned a single still image into a cinematic 5-second clip with a smooth zoom using Seedance 2.0.

Control cost by locking images before video. Documented per-clip video generations ran 16–27 credits inside invideo, and image generations cost significantly less than video generations — so approve still keyframes first, then animate only the ones you'll use. One complete multi-scene cinematic project, keyframes and animated clips included, totaled 400 credits. Against manually sourcing royalty-free stock, editors documenting this workflow report AI generation is both faster and a closer visual match, since stock libraries can't conform to your specific lighting and grade the way an anchor-image-constrained generation can.

Watch some of these to see what works for you:

when I'm editing videos and trying to find B-roll, it's always just better to use AI now. One, it's quicker, and two, it just always looks better.

— a professional video editor documenting an AI B-roll workflow