Learn
AI voiceover for interactive product demos
Generate narrated voiceovers for every step and turn your demo into a shareable technical guide with one click.
Voiceover
Written guide
Step 3 script
Open the team tab and invite the people who will run this workflow with you. Everyone you add lands on the same shared workspace.
Rewrite for a technical buyer
Shorten
Record the flow. nVariant drafts narration and documentation for every step.
How does AI voiceover for product demos work?
nVariant reads the steps of a recorded demo and drafts a short narration script for each one, based on what happens on that screen. You review the script, edit any line, and choose a voice and playback speed. Audio is generated per step, so changing one line never means regenerating the whole demo.
Narration helps wherever a viewer cannot ask questions: autoplay tours on a website, leave behind demos after a sales call, and MP4 exports for video channels. Enhance with AI can also rewrite the scripts for a different audience, based on the persona you pick.
Voiceover at a glance
Scripts
Drafted per step and fully editable
Voices
Multiple AI voices to choose from
Speed
0.75x, 1.0x, 1.25x, or 1.5x
Status
Pending, generating, completed, or failed per step
Plays in
Autoplay, share links, embeds, and MP4 export
Inside the AI toolkit
Scripts, voices, and written guides generated from the same recording.
AI Text
Voiceover
Guide
Demo title
Onboarding tour
Output language
English (US)
Generate the script
Aria, warm
Miles, neutral
Speed 1.0x
Generate step audio
Pick a voice
Getting started guide
Publish guide
Publish the guide
Everything powered by AI
Narration, guides, and edits that keep pace with your product.
Narration and documentation from the same recording
Every step gets a draft voiceover script you can edit, and the whole demo can become a written guide in a rich text editor, published at its own URL for docs and help centers.
Per step scripts, regenerate one step at a time
Multiple voices with speed control
One click guide generation with a shareable URL
Create and share a guide
Published
Generated from an 8 step recording. Every heading links back to the matching step in the demo.
1
Open the application
Start at app.nvariant.ai/demo/onboarding
2
Invite your team
Click Invite and add the people who run this workflow.
3
Publish the walkthrough
Press Publish, then copy the share link.
Regenerate
Edit any block by hand before publishing.
How the writing actually happens
The recording is the source. Narration and documentation are generated from the steps you captured, then left fully editable.
Written from the real flow
Scripts are drafted from what the recorder actually captured, step by step, so the narration matches the screen instead of inventing features.
Rewritten per audience
Pick the persona and regenerate. The same recording can speak to a technical evaluator, an economic buyer, or a new customer in onboarding.
Spoken in your pace
Choose a voice and set playback speed from 0.75x to 1.5x. Generation runs per step, so you can regenerate one line without redoing the demo.
Turned into documentation
One click converts a demo into a written guide with numbered steps, rich text editing, and a shareable URL for a help centre.
How it works
1. Record your demo
Capture your product flow with the Chrome extension. nVariant handles the screenshots and step detection.
2. Generate with AI
Hit generate. The AI writes voiceover scripts and full documentation for every step in seconds.
3. Publish and share
Publish your narrated demo and guide together. Give prospects and users everything they need in one link.
Writing narration that sounds natural
Generated voices sound best with short, direct scripts.
1
Say why, then what to click
Lead with why the step matters, then tell the viewer what to press. Instructions without context are easy to forget.
2
Keep lines under 20 words
Short sentences sound natural in a generated voice and keep each step moving.
3
Match speed to the audience
Use 1.0x for people seeing the product for the first time, and 1.25x for existing users who only need a refresher.
4
Regenerate single steps
When the product changes, update the script for the affected step and regenerate that line instead of the full demo.
AI voiceover and guide questions, answered
How generation works, and how much control you keep.