# VidBrain

> Ask any YouTube video a question and get an answer that cites the exact second each claim comes from. Then turn the video into chapters, a quiz, or a public key-moments page.

VidBrain (https://vidbrain.vercel.app) is a web app for people who learn from long videos: students working through recorded lectures, researchers and journalists checking what a speaker said, and content teams pulling quotes and show notes from podcasts and webinars. You paste a YouTube link, VidBrain fetches the captions and reads the whole transcript, and you chat with the video. Answers come only from the transcript, and every claim carries a timestamp like [14:32]. Clicking a timestamp plays the embedded video from that second, so answers can be checked.

## Pages
- [Homepage and free demo](https://vidbrain.vercel.app/): paste any YouTube link and get the three key takeaways with timestamps, no account needed (2 runs per day)
- [Sample workspace](https://vidbrain.vercel.app/sample): a full workspace on a sample lecture, with cited answers, chapters, key moments and a quiz; no account needed
- [Tutorial](https://vidbrain.vercel.app/tutorial): step-by-step guide, plus tips for videos without captions and multi-hour lectures
- Public key-moments pages live at https://vidbrain.vercel.app/v/{slug}: an embedded video with a summary, chapters, key moments and a quiz, each timestamp linked to the video

## Pricing
- Free account: one video with unlimited questions
- Pro: $19 per month, cancel anytime. Unlimited videos and questions, chapters, quizzes and key-moment pages with public share links
- Lifetime: $149 one-time payment. Everything in Pro, never renews
- 14-day money-back guarantee on both paid plans

## Facts
- Works with public YouTube videos that have captions (creator-uploaded or automatic), including Shorts and finished live streams
- Videos without captions: paste the transcript from YouTube's "Show transcript" panel; timestamps in the pasted text keep citations accurate
- Reads multi-hour videos in full rather than sampling parts of the transcript
- If a video does not cover the question, VidBrain says so instead of guessing
- Chats are private to the account; chapters, quizzes and key-moment pages are public and indexable
- Private and members-only videos are not supported