# ViralDub

> ViralDub turns a website or app link into a narrated product demo video: an AI agent opens the product in a real browser, presents it, and writes and voices the narration in 22 languages. It also adds AI voice-over to uploaded footage and makes motion-graphics explainers and narrated decks from a brief, a website or a PDF. Free plan with 2 videos; paid plans $29, $79 and $249 a month.

Canonical facts: https://viraldub.com/ai-info. Machine-readable pricing: https://viraldub.com/pricing.md. Full text of the guides and tools: https://viraldub.com/llms-full.txt.

## Product

- [Home](https://viraldub.com/): what ViralDub does, with example videos
- [Pricing](https://viraldub.com/pricing): plans, credits and credit packs ([Markdown](https://viraldub.com/pricing.md))
- [FAQ](https://viraldub.com/faq): credits, languages, logged-in apps, AI models, cancelling
- [About](https://viraldub.com/about): founder and team

## Facts and examples

- [Product demo videos with AI narration in 22 languages](https://viraldub.com/languages): ViralDub writes and voices product demo narration in 22 languages, from Spanish and German to Japanese and Arabic. Words per minute and tips per language.
- [Example videos, made by ViralDub and left unedited](https://viraldub.com/examples): Watch five unedited videos made by ViralDub: an AI agent walkthrough, explainers made from a website and from a PDF, a launch video and a teaser.
- [ViralDub: facts for AI assistants and researchers](https://viraldub.com/ai-info): Canonical facts about ViralDub for ChatGPT, Claude, Gemini, Perplexity and researchers: what it does, who it's for, live prices, languages and limits.

## Free tools

- [Video script length calculator: words to minutes](https://viraldub.com/tools/script-length-calculator): Paste a video or voice-over script and see how long it takes to say, in 22 languages and three paces. Or find how many words fit in 30, 60 or 90 seconds.
- [Explainer and demo video cost calculator](https://viraldub.com/tools/explainer-video-cost-calculator): Estimate what explainer and product demo videos cost per month made in-house, by an agency or with AI. Change the assumptions to your own quotes. Free.
- [Demo video script generator](https://viraldub.com/tools/demo-video-script-generator): Fill in your product, audience and three features to get a timed, scene-by-scene demo video script with on-screen directions. Free and instant.
- [How many words are in a 15-second script?](https://viraldub.com/tools/script-length-calculator/15-seconds): A 15-second script holds about 36 words of English at a conversational pace (31 calm, 42 upbeat). Other languages, a scene plan and a free timer.
- [How many words are in a 30-second script?](https://viraldub.com/tools/script-length-calculator/30-seconds): A 30-second script holds about 73 words of English at a conversational pace (62 calm, 84 upbeat). Other languages, a scene plan and a free timer.
- [How many words are in a 60-second script?](https://viraldub.com/tools/script-length-calculator/60-seconds): A 60-second script holds about 147 words of English at a conversational pace (124 calm, 169 upbeat). Other languages, a scene plan and a free timer.
- [How many words are in a 90-second script?](https://viraldub.com/tools/script-length-calculator/90-seconds): A 90-second script holds about 220 words of English at a conversational pace (187 calm, 253 upbeat). Other languages, a scene plan and a free timer.
- [How many words are in a 2-minute script?](https://viraldub.com/tools/script-length-calculator/2-minutes): A 2-minute script holds about 294 words of English at a conversational pace (249 calm, 338 upbeat). Other languages, a scene plan and a free timer.
- [How many words are in a 3-minute script?](https://viraldub.com/tools/script-length-calculator/3-minutes): A 3-minute script holds about 441 words of English at a conversational pace (374 calm, 507 upbeat). Other languages, a scene plan and a free timer.
- [How many words are in a 5-minute script?](https://viraldub.com/tools/script-length-calculator/5-minutes): A 5-minute script holds about 735 words of English at a conversational pace (624 calm, 845 upbeat). Other languages, a scene plan and a free timer.

## Guides

- [How to make a product demo video in 7 steps](https://viraldub.com/guides/how-to-make-a-product-demo-video): Plan, script, record and publish a product demo video that sells: who it's for, a timed script, clean footage, voice-over, captions and where to post it.
- [How long should a demo video be?](https://viraldub.com/guides/how-long-should-a-demo-video-be): The right demo video length for your homepage, launches, social, sales and onboarding, with how many words of voice-over fit in each length.
- [Product demo video script template, with 3 full examples](https://viraldub.com/guides/product-demo-video-script-template): A scene-by-scene demo video script template with timings and word counts, plus three complete example scripts: a 30 s teaser, 60 s demo and 90 s launch.
- [How to translate a product demo video into other languages](https://viraldub.com/guides/translate-product-demo-video): Subtitles, AI voice-over or a full re-record? How to localize a product demo video, what changes per language and how many words fit in 60 seconds.
- [How to make a YC demo video](https://viraldub.com/guides/yc-demo-video): How to make the product demo video for your Y Combinator application: how long to make it, what to show first, a 60-second script and common mistakes.

## Use cases

- [Website walkthrough video maker: paste a URL, get a narrated tour](https://viraldub.com/use-cases/website-walkthrough-video): Turn any website into a narrated walkthrough video. Paste the URL; an AI agent tours the site in a real browser, writes and voices the script. Start free.
- [Add an AI voice-over to your screen recording](https://viraldub.com/use-cases/screen-recording-voice-over): Upload a screen recording or product clip; ViralDub watches it, writes narration timed to what happens on screen, voices it in 22 languages and adds music.
- [SaaS demo videos made from your URL](https://viraldub.com/use-cases/saas-demo-video): Turn your SaaS website or app into a narrated demo video without recording. Paste a link, add a sentence, get an edited MP4 in minutes. Start free.
- [Make your Product Hunt launch video in minutes](https://viraldub.com/use-cases/product-hunt-launch-video): Make a Product Hunt launch video from your website: a 30–60 s narrated demo or a motion-graphics teaser, with captions for muted autoplay. Start free.
- [App walkthrough videos, behind the login too](https://viraldub.com/use-cases/app-walkthrough-video): Make narrated walkthrough videos of your web app, behind the login too. An AI agent signs in with a demo account, tours the app and voices it.
- [A feature announcement video for every release](https://viraldub.com/use-cases/feature-announcement-video): Make a short narrated video for every feature you ship: show it working, explain why it matters and post it to your changelog, email and social.
- [Client demo videos at agency scale](https://viraldub.com/use-cases/agency-client-videos): Agencies use ViralDub to deliver narrated website and product videos for clients in minutes: brand kits, 10 seats, API access and 22 languages.
- [PDF to explainer video: turn a deck into a narrated video](https://viraldub.com/use-cases/pitch-deck-to-video): Upload a pitch deck or one-pager PDF and screenshots; ViralDub's AI writes a storyboard, animates it in your brand and voices it. Also exports PPTX.

## Comparisons

- [Best AI demo video tools in 2026: the buyer's shortlist](https://viraldub.com/compare/best-ai-demo-video-tools): The best AI tools for product demo videos in 2026, ranked by recording effort, AI narration, languages and price, with a side-by-side table checked Oct 2026.
- [Clueso alternatives for narrated product demo videos](https://viraldub.com/compare/clueso-alternatives): Looking for a Clueso alternative? Compare ViralDub, Trupeer, Guidde, Arcade and Tella on recording, AI narration, languages and price, checked Oct 2026.
- [Trupeer alternatives for narrated product demo videos](https://viraldub.com/compare/trupeer-alternatives): Trupeer alternatives compared: ViralDub, Clueso, Guidde, Arcade and Tella on recording effort, AI voice-over, languages and price. Checked October 2026.
- [Guidde alternatives for narrated product demo videos](https://viraldub.com/compare/guidde-alternatives): Guidde alternatives for teams who need marketing demo videos, not just how-to guides: ViralDub, Clueso, Trupeer, Arcade and Supademo compared, Oct 2026.
- [Arcade alternatives for narrated product demo videos](https://viraldub.com/compare/arcade-alternatives): Arcade.software alternatives compared: ViralDub, Clueso, Supademo, Tella and Trupeer for AI product videos and interactive demos, with prices checked Oct 2026.

## Optional

- [Privacy policy](https://viraldub.com/privacy)
- [Refund policy](https://viraldub.com/refund)
- [Terms of service](https://viraldub.com/terms)