AI Video Prompt Builder (Sora, Veo)
AI Video Prompt Builder constructs detailed, structured prompts for today's video generators — Sora 2, Veo 3.1 — and for Nano Banana image generation and editing. Instead of guessing at magic words, you fill in the parts a video model actually parses: scene, action, shot type, camera movement, lighting, mood, audio cues, duration and aspect ratio. Get the result as a JSON prompt (the format prompt engineers use for repeatable, controllable output) or as plain text, ready to paste.
Last updated: July 2026
An AI video prompt builder assembles a structured prompt for video models like Sora 2 and Veo 3.1: fill in the scene, action, shot type, camera movement, lighting, mood, audio and duration, and it outputs a clean JSON prompt — the format that gives these models the most reliable control — or a plain-text version. It also builds edit prompts for Nano Banana images. Everything runs in your browser.
How to use AI Video Prompt Builder (Sora, Veo)
- Pick your model (Sora 2, Veo 3.1 or Nano Banana) and output format.
- Describe the scene and action, then set camera, lighting, mood, audio and duration.
- Copy the generated JSON or text prompt into your generator.
Frequently asked questions
Why use a JSON prompt for Sora or Veo?
Structured prompts separate the scene, camera, lighting and audio into labelled fields, which makes the model follow each instruction more reliably and makes it easy to tweak one variable between generations. It's become the standard workflow for repeatable AI video output.
Does this generate the video?
No — it only builds the prompt text. Paste it into Sora, Google Flow/Gemini (for Veo), or your Nano Banana image workflow.
What makes a good AI video prompt?
Be concrete about one scene and one action, specify the shot type and a single camera movement, name the lighting, and keep the duration short (5–10 s). Contradictory instructions (two camera moves, day and night) are the most common cause of bad generations.
Can I write audio and dialogue cues?
Yes — Sora 2 and Veo 3.1 generate synchronized audio, and the builder has an audio field for ambience, sound effects or short quoted dialogue.
Is anything uploaded?
No — the prompt is assembled entirely in your browser.
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