B-roll is supporting footage placed over narration to clarify what the speaker means. With Seedance 2.5, plan one visual task per clip, generate simple coverage, then place usable moments under a locked voice track in an external editor.
Turn narration into visual tasks
Split each sentence into visible nouns, actions, and settings. Abstract claims should not become fake software dashboards full of unreadable text. Use real screen recordings for exact interface instructions.
| Narration idea | Visual task | Source material | Prompt |
|---|---|---|---|
| One clear task | Establish an uncluttered desk | Wide desk photo | 1 |
| Reference beside notebook | Show one object placed beside notes | Object and desk photo | 2 |
| Remove distractions | Show one item moved away | Simple desk photo | 3 |
| Ready for next session | End on an orderly surface | Wide desk photo | 4 |
Prompt 1: desk environment
Use a level tidy desk photo. Use the uploaded desk photo as visual reference. Show one calm desktop with notebook, pen, and a single reference card. Make a very slow push-in toward the notebook while keeping layout, light, and object count stable. No readable screen interface, added text, or dramatic camera move.
Prompt 2: one object in detail
Use the uploaded reference-card and notebook photo. Show the card beside the notebook as the main relationship. Make a small steady move toward the card, keeping edges, colors, and placement consistent. Do not invent readable words, logos, extra papers, or a second hand.
Prompt 3: a simple organizing action
Use the uploaded desk image. A single hand gently moves one loose distraction to the far edge, then stops. Keep the notebook, pen, and reference card still. Use a stable medium shot and one continuous action. Avoid complex page turning and finger close-ups.
Prompt 4: the tidy ending
Use the uploaded wide desk photo. End on a clean workspace with notebook, pen, and reference card neatly placed. Use a nearly locked camera with minimal settling movement. Preserve desk edges, object count, and soft light. No extra papers or interface text.
Edit under the narration
Lock the voice track first. Generate simple candidates, then select frames that support the exact sentence. In an external video editor, trim each clip to the useful action, place it under matching narration, and remove competing audio. Generated footage should illustrate an idea, not pretend to be a real interface or proof that work was completed.
For a fuller planning sheet, see the AI video shot-list template. For a physical object source, use the image-to-video workflow.
FAQ
Does every sentence need its own B-roll clip?
No. One useful clip can support several related sentences if it remains relevant.
Can generated B-roll replace a screen recording?
It can illustrate a general workflow, but use a real recording for exact buttons, menus, and data.
How do I keep multiple B-roll clips consistent?
Reuse source photos, object arrangement, light direction, and restrained camera language.
Should B-roll include its own sound?
Usually keep supporting footage quiet when narration carries the message.
Product explanation B-roll
Input: A clean product photo or simple product setup.
Use the uploaded product image as reference. Show the product centered on a clean desk while one deliberate feature is demonstrated with a single hand movement. Keep the product shape, label placement, lighting, and background stable. Use a slow close push-in. No invented interface, extra products, or unreadable text.
Use this clip when the narration explains what an object does. Check that the feature remains recognizable; if the hand or label changes, shorten the shot or use the original product image with an editor zoom.
Service-process B-roll
Input: A simple reference image of a service setting, such as a consultation desk or delivery handoff.
Use the uploaded service-setting image as reference. Show one clear step in a service process: a staff member places a prepared folder on the counter and gestures toward it once. Keep the room, counter, folder, clothing, and light consistent. Use a stable medium shot and one simple action. Do not show readable private information, extra people, or a sequence of steps the source image cannot establish.
Place this under narration that explains how a service works. Verify that the action matches the actual process; use real footage for claims about staff, timing, or results.
