How is the word budget calculated?

Spoken narration runs at roughly 150 words per minute, so a 60-second video targets about 150 words. The tool scales this to your chosen length so the script does not run long when read aloud.

What script structure does it produce?

The prompt asks for a classic explainer arc — problem, solution, how it works, then a single call to action — laid out as a two-column visual and voiceover script in 5 to 10 second scenes.

Why is the first five seconds so important?

Viewers decide almost immediately whether to keep watching. The prompt forces a hook in the opening five seconds that names the pain your audience feels, which is the biggest driver of completion rate.

Is my information sent anywhere?

No. The builder runs locally in your browser. Your product details and key message are never uploaded or stored.

Explainer Video Script Prompt Builder

Explainer video script prompt builder

A good explainer video earns its length — every second of narration costs the viewer attention. This tool builds an AI prompt that produces a tight, well-structured script for your chosen duration, and shows you the narration word budget so the script never runs over when read aloud.

How it works

Spoken narration averages about 150 words per minute, so length and word count are directly linked. The tool converts your chosen duration into a target word count — roughly 150 words for 60 seconds — and bakes that limit into the prompt. The prompt then asks the model for a proven explainer structure:

Problem — a hook in the first five seconds naming the viewer’s pain.
Solution — how your product addresses it.
How it works — the key mechanism in plain language.
Call to action — one clear next step.

It also requests a two-column visual and voiceover layout broken into short scenes, which is the format animators and editors actually work from.

Tips and examples

Spend the most effort on the key message field — an explainer should land exactly one idea, and the script will lead with whatever you put there. Keep the audience specific so the opening hook bites; “self-employed designers who hate tax season” produces a sharper first line than “everyone”. Read the generated script aloud against a timer before recording — if it overruns, cut from the “how it works” section first, since viewers care most about the problem and the result. End on a single CTA; offering two choices reliably lowers conversion.