Download videos from 1800+ platforms and generate structured AI summaries with timestamps.

Video Summarizer

Download videos from YouTube, Bilibili, and 1800+ platforms, extract subtitles, run parallel speech transcription, and generate structured AI summaries.

Video AnalysisKnowledge WorkflowAgent Workflow

52 Stars6 ForksUpdated Aug 25, 2026View source

Overview Capabilities Quick start

Skill impact

A focused workflow with measurable value.

Stars

Forks

Updated

Aug 25, 2026

About Video Summarizer

Download videos from any platform and generate a complete resource package including: Original video file (mp4), Audio file (mp3), Subtitle file (with timestamps, vtt/srt format), Summary file (summary.md)

What Video Summarizer Can Help You Do

Downloads online videos from 1800+ supported platforms, extracts or transcribes audio content into subtitles and plain text transcripts, and automatically generates structured AI summaries.

Download videos from YouTube, Bilibili, TikTok, Twitter/X, and 1800+ platforms

Extract manual or auto-generated subtitles in multiple languages

Transcribe audio using faster-whisper with parallel CPU processing

Generate structured markdown summaries with key points, quotes, and timestamps

Export complete media resource packages including MP4 video, MP3 audio, VTT subtitles, and text transcripts

Common use cases

Summarizing long educational lectures and conference talks

Extracting transcripts from product review and tutorial videos

Archiving social media clips and creator content

Analyzing foreign-language videos with multi-language subtitle extraction

Quick start

Install command

npx skills add liang121/video-summarizer@video-summarizer