Real estate B-roll clips should run 2–5 seconds each in the final cut — around 2 seconds for detail shots like hardware and fixtures, and 4–5 seconds for exterior approach shots and hero rooms. A complete listing B-roll package typically lands at 30–35 seconds total, roughly 8–12 clips. Generate each clip longer than you'll use so you have trim room.
Cut each B-roll clip to 2–5 seconds in the timeline. Detail shots — cabinet hardware, faucets, light fixtures — read fully in about 2 seconds; holding them longer stalls the video. Exterior approach shots and hero rooms (great room, primary suite, view shots) earn 4–5 seconds because they carry the emotional weight of the listing. If you're intercutting B-roll with an on-camera walkthrough or narration, introduce a new visual roughly every 4–8 seconds to keep the rhythm moving.
For the total package, plan around 30–35 seconds of finished B-roll per listing. One documented production hit exactly this: a full B-roll package for a 23-home gated ridgeline estate came out at 30–35 seconds built from 8 final clips — about 4 seconds average per clip — structured as a three-act shot list (Establish, Enter, Character & Artifacts) that works well for any real estate B-roll under 35 seconds. That whole package cost about $67 in credits and took 2–3 hours, against $300–$500 for a traditional drone session.
Generate longer than you'll cut. If you're producing the B-roll with AI, generate clips at 4–5 seconds minimum — Seedance 2.0 generates 4-second-minimum clips, which gives you an editing buffer to trim into the exact 2–4 second beat you need. The invideo agent handles this planning for you: it builds the shot list with a duration, framing, and camera movement per shot before generating anything, so clip lengths are decided at the plan stage rather than fixed in the edit.
Budget for overshoot. In that same real estate production, 19 clips were generated and only 8 made the final cut — under half. Whether you're shooting or generating, plan on producing 2–3× the clip count you expect to use so the edit has real choices.
Watch some of these to see what works for you:
We spent about 270 credits, which comes to roughly $67 and we spent about 2-3 hours to create this. If you compare that to a $300-500 drone shoot or if you're creating B-roll for a pre-construction property where there's literally nothing on site yet, this workflow is pretty cool.
— invideo's creative team