Video Transcript Extractor
> 🎬 Extract text from videos and audio with multi-platform support
Skill Overview
This skill helps AI Agents extract text content from various video and audio platforms, supporting 20+ platforms including Douyin, Bilibili, Xiaohongshu, Weibo, WeChat Video, TikTok, YouTube, and Instagram. With multi-level extraction strategy (subtitle track → speech recognition → AI correction), it ensures 95%+ accuracy.
Core Capabilities
- Multi-platform Support: Douyin, Kuaishou, Bilibili, Xiaohongshu, Weibo, WeChat Video, TikTok, YouTube and 20+ more
- Smart Extraction: Prioritizes native subtitles (100% accuracy), uses ASR + AI correction when needed
- Audio Separation: Automatically identifies and extracts background music info
- Batch Processing: Support batch extraction for multiple video links
- Multi-language: Chinese, English, Japanese, Korean and 100+ languages
Trigger Keywords
/extract-transcript/video-to-text/transcript-extraction/video-subtitle-extract/audio-to-text/extract-video-text
How to Use
Basic Usage
Provide a video link, and the Agent automatically identifies the platform and extracts the transcript:
User: Extract transcript from: https://v.douyin.com/xxxxx
Agent: Extracting video transcript...
Video Title: xxx
Duration: 3m 25s
【Transcript Content】
(Full extracted transcript)
【Background Music】
Song: xxx
Artist: xxx
Parameters
| Parameter | Required | Description |
|---|---|---|
| video_url | Yes | Video share link |
| extract_audio | No | Whether to extract audio, default false |
| auto_correct | No | Whether to enable AI correction, default true |
Supported Platforms
| Platform | Share Link Format | Subtitle | Audio |
|---|---|---|---|
| Douyin | https://v.douyin.com/xxx | ✅ | ✅ |
| Kuaishou | https://v.kuaishou.com/xxx | ✅ | ✅ |
| Bilibili | https://b23.tv/xxx or BV号 | ✅ | ✅ |
| Xiaohongshu | https://www.xiaohongshu.com/xxx | ✅ | ✅ |
| https://weibo.com/xxx | ✅ | ✅ | |
| WeChat Video | Video account link | ✅ | ✅ |
| TikTok | https://tiktok.com/@xxx/video/xxx | ✅ | ✅ |
| YouTube | https://youtube.com/xxx | ✅ | ✅ |
Extraction Strategy
Strategy 1: Subtitle Track (Highest Priority)
Prioritize native subtitles from video:
1. Extract CC subtitles/official subtitles
2. Extract user-uploaded subtitle files
3. Return original text if subtitles available
Strategy 2: Speech Recognition
Use ASR when no subtitles:
1. Separate video/audio streams
2. Call ASR API to recognize speech
3. Return timestamp-to-text mapping
Strategy 3: AI Correction
Intelligent correction after recognition:
1. Fix obvious typos
2. Optimize punctuation
3. Complement colloquial expressions
4. Output complete, fluent transcript
Output Format
## Video Information
- Title: xxx
- Platform: YouTube
- Duration: 3m 25s
- Published: 2024-01-15
- Author: @xxx
## Transcript Content
(Complete transcript, ready for copy-paste)
## Timeline
- 00:00 - Opening Introduction
- 00:15 - Core Content Begins
- 01:30 - Case Analysis
- 03:00 - Summary
## Background Music
- Song: xxx
- Artist: xxx
- Music Link: https://...
Usage Examples
Example 1: Extract YouTube Video Transcript
User: Extract this video transcript: https://youtube.com/watch?v=xxx
Agent: Extracting YouTube video transcript...
✅ Extraction successful!
Video Title: Future Trends in AI Agents
Duration: 5m 12s
【Transcript Content】
Hello everyone, today we're going to talk about the future of AI agents...
(Full transcript ~2000 words)
Example 2: Extract TikTok Video
User: Extract this TikTok transcript: https://tiktok.com/@user/video/xxx
Agent: Extracting TikTok video transcript...
✅ Extraction successful!
Video Title: Quick makeup tutorial
Subtitle Type: Auto-generated subtitles
Accuracy: 98%
【Transcript Content】
(Full transcript content)
Example 3: Batch Extraction
User: Batch extract these video transcripts:
1. https://youtube.com/xxx1
2. https://tiktok.com/xxx2
3. https://instagram.com/xxx3
Agent: Batch extracting...
✅ Batch extraction complete!
| # | Platform | Title | Status | Words |
|---|----------|-------|--------|-------|
| 1 | YouTube | AI Tutorial | ✅ Success | 1234 |
| 2 | TikTok | Coding Tips | ✅ Success | 856 |
| 3 | Instagram | Travel Vlog | ✅ Success | 542 |
Technical Implementation
API Call Flow
1. Parse video link → Get real URL and platform type
2. Call platform API → Get video info and subtitles/audio
3. Format conversion → Output as standard Markdown
4. AI correction (optional) → Improve accuracy
5. Return result → Display to user
API Endpoints Reference
| Platform | API Endpoint | Notes |
|---|---|---|
| YouTube | /api/v1/youtube/web/fetch_one_video |
TikHub API |
| TikTok | /api/v1/tiktok/web/fetch_one_video |
TikHub API |
| Douyin | /api/v1/douyin/web/fetch_one_video_by_share_url |
TikHub API |
| Bilibili | /api/v1/bilibili/web/fetch_one_video |
Requires BV number |
Audio Processing
- Prioritize
music.play_urlfield for pure audio - Fallback to
video.play_addrfield - Duration is in milliseconds, divide by 1000 for seconds
Notes
- Subtitle Priority: Native subtitles are prioritized for 100% accuracy
- Link Format: Supports both share links and direct links
- Copyright Notice: Extracted content is for learning reference only
- Long Video: Videos over 10 minutes should be extracted in segments
- Network Issues: Retry or manually provide subtitle files if needed
Use Cases
- 📝 Content Creators: Quickly get viral video transcripts for reference
- 🔍 Market Research: Analyze competitor video content strategies
- 📚 Knowledge Organization: Convert video content to text notes
- 🤖 AI Training: Collect corpus data
- 📱 Social Sharing: Share core video content with friends
Changelog
v1.0.0 (2024-01-20)
- Initial release
- Support for YouTube, TikTok, Instagram, Douyin and more
- Subtitle track priority extraction strategy
- AI intelligent correction support
Author Info
- Author: AI Agent Helper
- Version: 1.0.0
- Framework: OpenClaw
