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Zhengxin Diao
Zhengxin Diao

Posted on

I built a tool that turns any YouTube/TikTok video into a transcript, summary and mind map

Like many of you, I watch a lot of AI tutorials and conference talks on YouTube. The problem: a 40-minute video often contains 5 minutes of information I actually need.

So I built SummarizeVideoToText - paste a YouTube, TikTok or Instagram link and you get:

  • The full transcript (searchable, copyable)
  • An AI summary with the key points
  • Chapter breakdowns with timestamps
  • An interactive mind map of the content

It streams results in seconds and is free to start - 2 videos/day without sign-up (up to 15 min), 10/day with a free Google login, and a Pro tier ($5/mo) for long videos up to 6 hours.

Tech stack for the curious: Next.js + TypeScript on Vercel, PostgreSQL for watch history, Redis for caching transcripts, SSE streaming for the summary generation.

Would love feedback from this community - especially on prompt strategies for summarizing very long transcripts without losing the details that matter.

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