AI Video Summarizer: Skip to the Good Part of Any YouTube Video
An AI video summarizer turns hour-long YouTube videos into timestamped notes. yt-dlp + Whisper + local LLM - free and private.
📜 Table of Contents
YouTubers stretch 3 minutes of content into 20. An AI video summarizer compresses it back - and the timestamped output means you jump straight to the parts that matter.
The 3-Tool Pipeline
yt-dlp (182,988 stars) downloads the audio, Whisper (106,813 stars) transcribes it, and a local LLM via Ollama (177,874 stars) turns the transcript into sections with timestamps. A 25-minute video becomes a 300-word note with 5 links to exact moments. n8n (199,484 stars) can watch your subscription feed and summarize every new video automatically.
Why Timestamps Matter
A summary without timestamps is a review; with timestamps it is a map. When the LLM outputs each section with its start time, the note becomes a navigation tool - you can watch a 2-hour tutorial in 15 minutes of targeted viewing.
FAQ
Q: Can it summarize in Chinese?
A: Yes - Whisper handles Chinese audio; summarize in Chinese with a Chinese-preferring model like Qwen2.5 (27,479 stars).
Q: Is downloading YouTube videos OK?
A: Personal summarization of public videos is common; check YouTube ToS and your local laws for redistribution.
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