Tips, updates, and stories from SageTube — how to search, cite, and archive YouTube content with AI.
· marcin
Karpathy's published lecture material — Zero to Hero, the CS231n course, the standalone LLM talks — adds up to roughly 40 hours of video. Watching it all takes a week of full-time effort; asking one question across an indexed copy of it takes about ten seconds, with a timestamp to verify the answer.
Read more →· marcin
YouTube search indexes titles and tags, not the words spoken inside videos. With 500+ hours uploaded every minute, nobody can watch their way to an answer. Here is why video became the largest locked knowledge store on the internet — and how RAG over transcripts opens it.
Read more →· marcin
Where to get the extension, how Google sign-in works, which browsers are supported, and what each of its three permissions is actually for.
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Everything the SageTube Chrome extension does on YouTube — sidebar chat, one-click summaries, transcripts, quick-add to an Expert, the three-dot menu, keyboard shortcuts, dark mode, and what each action costs.
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Web-search citations point at a URL and leave you to skim. RAG citations point at the exact passage that produced the answer — and in SageTube, that passage is a timestamped clip you can play in one click.
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An AI answer without a source is a guess. This is why every SageTube answer carries a verifiable reference back to a specific video timestamp — and why we treat the absence of citations as a product bug, not a tradeoff.
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Every SageTube answer cites the source video and timestamp. This is how the pipeline emits a citation — and what happens when no transcript supports the question.
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Why this blog exists, how it's written, and what to expect from upcoming posts about searching and citing YouTube content.
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