YouTube Summarizer

About YouTube Summarizer

YouTube Summarizer is an AI-powered tool that extracts and summarizes the content of any YouTube video. It works by fetching the video's captions (auto-generated or manual), detecting the language, and using advanced AI algorithms to generate concise summaries.

The tool supports multiple output formats including bullet points for quick overviews, executive summaries for professionals, study notes for students, SEO outlines for content creators, social media captions, and full blog articles.

Additionally, it automatically generates video chapters based on timestamp analysis and extracts key terms and topics using TF-IDF algorithms.

How does YouTube Summarizer work?

The tool fetches the video's subtitle/caption track from YouTube (either auto-generated or manually added captions). It then uses the franc library to detect the language, applies TF-IDF algorithms for keyword extraction, and uses the BART AI model from Hugging Face for intelligent summarization.

Chapters are automatically generated by analyzing timestamp segments and grouping related content together.

What video types are supported?

YouTube Summarizer works with any YouTube video that has captions available:
- Regular YouTube videos
- YouTube Shorts
- Live streams (after they end)
- Embedded videos

The video must have either auto-generated captions or manually added subtitles. Videos without any captions cannot be summarized.

What output formats are available?

Six different output formats are available:

1. Bullet Points: Quick, scannable list of key points
2. Executive Summary: Professional summary with context
3. Study Notes: Formatted for learning with key terms highlighted
4. SEO Outline: Optimized for content creation with headers and keywords
5. Social Media Caption: Short, engaging summary with hashtags
6. Blog Article: Full article with sections and detailed breakdown

What languages are supported?

The tool can process videos in over 180 languages. It automatically detects the video's language and applies appropriate processing. The AI summarization works best with English content, but the extractive summarization fallback works well for all languages.

The interface is available in English, Spanish, Vietnamese, Portuguese, and French.

How accurate are the chapters?

Chapters are automatically generated by analyzing the transcript timestamps and grouping related content. The accuracy depends on the video's content structure. Well-organized videos with clear topic transitions will have more accurate chapters.

The algorithm identifies topic changes based on keyword shifts and aims to create 5-8 meaningful chapters per video.

Can I export the summary?

Yes! You can export your summary in three formats:
- PDF: Professional document format, great for sharing
- TXT: Plain text for easy editing
- Markdown: For use in blogs, GitHub, or note-taking apps

All exports include the summary, chapters, and keywords.