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Extract YouTube video transcripts and generate AI-powered summaries in any language. Converts videos to structured markdown documents with summaries, key points, and timelines.
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| name | youtube-transcript-summarizer |
| description | Extract YouTube video transcripts and generate AI-powered summaries in any language. Converts videos to structured markdown documents with summaries, key points, and timelines. |
| allowed-tools | ["Read","Write","Bash","Glob"] |
| license | MIT |
Extract transcripts from YouTube videos and generate AI-powered summaries. Supports any source language and can output summaries in your preferred language.
pip install -r requirements.txt
# or: pip install youtube-transcript-api anthropic
Cost depends on transcript length and current Claude API pricing.
# Single video (default: English -> Korean)
python youtube_transcript_summarizer.py "https://www.youtube.com/watch?v=VIDEO_ID"
# Transcript only (no AI summary)
python youtube_transcript_summarizer.py "VIDEO_URL" --no-summary
# Japanese video with English summary
python youtube_transcript_summarizer.py "VIDEO_URL" --source-lang ja --target-lang en
# Auto-detect source language
python youtube_transcript_summarizer.py "VIDEO_URL" --source-lang auto --target-lang fr
# Batch processing
python youtube_transcript_summarizer.py --batch "urls.txt" --output-dir "summaries"
# Custom model and transcript limit
python youtube_transcript_summarizer.py "VIDEO_URL" --model claude-sonnet-4-5-20250929 --max-transcript-chars 30000
| Option | Description | Default |
|---|---|---|
--title | Custom video title | Auto-fetched via yt-dlp |
--source-lang | Source transcript language | en |
--target-lang | Output summary language | ko |
--output-dir | Output directory | outputs/summaries |
--batch FILE | Process multiple URLs from file | - |
--timeline-interval | Timeline interval (minutes) | 5 |
--no-summary | Skip AI summary | false |
--api-key | Claude API key | ANTHROPIC_API_KEY env |
--model | Claude model name | claude-sonnet-4-5-20250929 |
--max-transcript-chars | Max chars sent to Claude | 15000 |
en, ko, ja, zh, es, fr, de, pt, ru, ar, hi, auto
Files are named YYYY-MM-DD VideoTitle.md with YAML frontmatter:
---
title: "Video Title"
source: "https://www.youtube.com/watch?v=ID"
created: YYYY-MM-DD HH:MM:SS
tags:
- youtube-transcript
video_id: "ID"
source_lang: "en"
target_lang: "ko"
---
Sections: Summary, Key Points, Main Content, Timeline, Full Transcript.
Summarize this YouTube video: https://www.youtube.com/watch?v=VIDEO_ID