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Demo video script generator.

Write down what happens in your walkthrough, one step per line. Get a narration script with one clear line per step, ready to read or record. Free, no sign-up.

How to use the script generator

  1. Enter your product name so the script can mention it naturally.
  2. List the steps in the order they happen in your recording, one per line. Short is fine: "Click Invoices", "Pick a customer", "Send the invoice".
  3. Choose who's watching and the tone. A script for new users explains why a step matters. A sales script leads with the outcome. A script for app reviewers is plain and precise.
  4. Press Write my script. You get a title, a one-line intro, one narration line per step and a closing line. Edit anything you like, then copy it.

What makes a good demo script

A demo script is not a manual. The best ones sound like someone showing a colleague how something works.

For a longer guide to structure, timing and examples, read how to write a demo video script.

From script to video

Once you have a script, you still need to record, voice it and line the voice up with the screen. That's the slow part.

Nook does it the other way round. Upload a screen recording you already have, even one where you didn't say anything, and Nook reads the screen, writes a line like these for each step, voices it with a natural AI voice (or tidies up your own), zooms in on each click and adds captions. You also get a step-by-step written guide from the same recording. Your first video is free.

Questions

Is the script generator free?

Yes. There's no sign-up and no cost. It has a fair-use limit of a few scripts an hour per person.

What AI writes the script?

An open large language model, prompted with the same rules Nook uses to narrate demo videos: second person, present tense, one or two short sentences per step, and only the button names you give it.

Can it write a script for an app review video?

Yes. Choose "App reviewers" as the audience and list each step the reviewer needs to see, such as signing in, granting a permission and using the feature. For platform rules, see app review videos.

How long should a demo video script be?

As long as the steps need, no longer. Most product demos are 1 to 3 minutes: 8 to 20 steps at a few seconds each. If your list runs past 30 steps, split it into two videos.

Do I need to record a voiceover after?

Not with Nook. Upload the recording and it voices the narration for you, in English or 14 other languages. Or keep your own voice: Nook can clean up what you said instead.

Turn the recording into a narrated demo

Upload the same screen recording to Nook. It writes and voices the script, adds zooms and captions, and writes the step-by-step guide. Your first video is free.

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