Hi Product Hunt 👋 I'm Aman, solo founder of VidBook. I built VidBook in 7 days for the OpenAI × Outskill AI Builders Hackathon 2026, and we won as one of 5 winners out of 1,000 builders. Today I'm bringing it to Product Hunt. The problem: Long-form creators on YouTube sit on goldmines they can't publish. A 60-90 minute educational video has enough material to fill a 30,000-word book. But manual ghostwriting costs $2,000-$5,000 and takes 4-8 weeks. Generic AI tools hallucinate and produce prose Amazon reviewers flag as AI within the first paragraph. Meanwhile, six million Kindle Unlimited readers are starving for high-quality educational non-fiction. The bridge between those two audiences barely exists. VidBook is that bridge. How it works: 1. Paste any long-form YouTube URL 2. Pick Normal mode (Gemini 2.5 Pro, free) or Pro mode (OpenAI gpt-4o-mini, paid plans) 3. A multi-agent pipeline grounded in the transcript writes outline → chapters → continuity passes → humanizer 4. Live PageFlip preview in the browser 5. Export to KDP-ready PDF (6×9, mirrored margins), EPUB, and DOCX A 7-chapter book finishes in about 6 minutes for $0.02 of compute. Same workflow that used to take 4-8 weeks and $2,000+. What makes it different from "another AI book generator": · Grounded - every fact ties back to a transcript chunk. Zero hallucination. · Humanized - 30+ pattern rule set based on Wikipedia's "Signs of AI writing" strips em dashes, copula avoidance, persuasive tropes, rule-of-three forcing. · No timeout - multi-agent pipeline runs on Trigger.dev so book length is unlimited (not bound by Vercel's 300s function cap). · Publish-ready - PDF formatted for Amazon KDP out of the box. No formatting middle step. Who it's for: · YouTube educators who want to monetize their video catalog beyond ad revenue (Amazon KDP, Google Play Books, Apple Books, Kobo) · Course creators looking for companion eBooks · Coaches and consultants productizing their methods · KDP self-publishers filling niches faster Built solo with OpenAI Codex as my primary dev partner. Stack: Next.js 15, Supabase, Clerk, Stripe, Trigger.dev, Gemini 2.5, gpt-4o-mini, @react-pdf/renderer. Free plan gives 10 credits on signup. Try a video and tell me what works and what doesn't 👇 Thanks for taking a look

VidBook

Turn long-form YouTube videos into KDP-ready books in 6 min

Turn long-form YouTube videos into KDP-ready books in 6 min