Skills bilibili-transcript

Name: bilibili-transcript
Author: openclaw

Transcribe Bilibili videos to text with high accuracy using Whisper medium model. Use when the user provides a Bilibili video URL (BVxxxxx) and wants to: (1) Extract the complete audio content as text with high accuracy, (2) Get a detailed summary of the video content, (3) Save the transcript as a formatted TXT file instead of posting long text to Discord. Automatically detects CC subtitles if available, otherwise uses Whisper medium model with GPU acceleration. Output saves to 'Bilibili transcript' folder by default, includes video metadata, summary section, and full transcript in Simplified Chinese.

install

source · Clone the upstream repo

git clone https://github.com/openclaw/skills

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/openclaw/skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/54lynnn/bilibili-transcript" ~/.claude/skills/openclaw-skills-bilibili-transcript && rm -rf "$T"

OpenClaw · Install into ~/.openclaw/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/openclaw/skills "$T" && mkdir -p ~/.openclaw/skills && cp -r "$T/skills/54lynnn/bilibili-transcript" ~/.openclaw/skills/openclaw-skills-bilibili-transcript && rm -rf "$T"

manifest: skills/54lynnn/bilibili-transcript/SKILL.md

Bilibili Transcript v2.2

High-accuracy Bilibili video transcription with multi-language AI subtitle support.

Overview

This skill provides a complete transcription workflow for Bilibili videos:

Extract Video Metadata - Title, author, publish date, duration
Smart Subtitle Detection - Priority: CC subtitles → AI subtitles (multi-language) → Whisper transcription
Multi-language AI Subtitle Support - Auto-detects:
```
ai-zh
```
,
```
ai-en
```
,
```
ai-ja
```
,
```
ai-es
```
,
```
ai-ar
```
,
```
ai-pt
```
,
```
ai-ko
```
,
```
ai-de
```
,
```
ai-fr
```
Browser Cookie Support - WSL Chromium or Windows Edge for member-only videos
Formatted Output - Saves as structured TXT file with metadata + summary placeholder + full transcript
Simplified Chinese - Automatically converts Traditional to Simplified Chinese

What's New in v2.2

✅ Fixed cookie detection - Now uses browser config directory instead of SQLite file (avoids encoding errors)
✅ One-stop solution - CC subtitles → AI subtitles → Whisper transcription, all in one script
✅ Better WSL support - Automatically detects WSL Chromium and Windows Edge cookies
✅ Smart fallback - Seamlessly switches between subtitle sources without user intervention

What's New in v2.1

✅ Improved cookie handling - Fixed UTF-8 encoding issues with snap Chromium
✅ Three-tier fallback - CC subtitles → AI subtitles → Whisper transcription
✅ Better error handling - Gracefully degrades when cookie sources fail

What's New in v2.0

✅ Multi-language AI subtitles - Supports 9 languages: Chinese, English, Japanese, Spanish, Arabic, Portuguese, Korean, German, French
✅ WSL Chromium support - Better cookie extraction than Windows Edge
✅ Correct subtitle download - Uses
```
--write-subs --write-auto-subs
```
combo
✅ Language auto-detection - Automatically finds available AI subtitle language

AI Subtitle Language Codes

Bilibili uses

ai-

prefix for AI-generated subtitles:

Code	Language	语言
`ai-zh`	Chinese	中文
`ai-en`	English	英文
`ai-ja`	Japanese	日文
`ai-es`	Spanish	西班牙文
`ai-ar`	Arabic	阿拉伯文
`ai-pt`	Portuguese	葡萄牙文
`ai-ko`	Korean	韩文
`ai-de`	German	德文
`ai-fr`	French	法文

Requirements

Hardware (Your Setup)

GPU: NVIDIA RTX 4070 Super (12GB VRAM) - ✅ Perfect for medium model
WSL Memory: 16GB (configured)
WSL CPU: 6 cores (configured)

Software

```
yt-dlp
```
- Video/audio download
```
ffmpeg
```
- Audio processing
```
whisper
```
- Speech-to-text (local, no API key)
```
opencc
```
- Traditional to Simplified Chinese conversion (optional)

Browser (for AI subtitles)

WSL Chromium (recommended) - Log in to Bilibili in WSL
Windows Edge - Alternative option

Workflow

Step 1: Run Transcription Script

./scripts/bilibili_transcript.sh "https://www.bilibili.com/video/BVxxxxx"

Priority order:

CC Subtitles (manual) - Fastest, highest accuracy
AI Subtitles (auto-generated) - Fast, good accuracy, multi-language
Whisper Transcription - Slowest, ~95% accuracy, works for all videos

Step 2: Generate Detailed Summary

After the script completes, read the generated TXT file and:

Read the full transcript (第二部分)
Generate a comprehensive summary (第一部分)
Save the updated file

Step 3: Present to User

In Discord, post:

Brief summary in message
Attach the TXT file for full content

Setup WSL Chromium Login

For best results with AI subtitles:

Start WSL Chromium:
```
chromium-browser &
```
Navigate to bilibili.com
Log in with your Bilibili account
Run the transcription script

The script will automatically use Chromium's cookies to access member-only AI subtitles.

Usage Examples

Example 1: Basic Transcription (Default Output)

./scripts/bilibili_transcript.sh "https://www.bilibili.com/video/BV1Z1wJzgEAj/"
# Output: workspace/Bilibili transcript/[VideoTitle]_BVxxxxx_transcript.txt

Example 2: Custom Output Directory

./scripts/bilibili_transcript.sh "https://www.bilibili.com/video/BV1Z1wJzgEAj/" ~/Documents

Notes

Model Selection

Your config: RTX 4070 Super 12GB + 16GB RAM + 6 cores
Default:
```
medium
```
model (~95% accuracy, balanced speed) ✅
Fallback: If GPU unavailable, automatically uses CPU (slower)

Accuracy Comparison

Source	Accuracy	Speed	Best For
CC Subtitles	100%	⚡ Instant	All videos with manual subtitles
AI Subtitles (ai-zh)	~90%	⚡ Instant	Chinese videos
AI Subtitles (ai-en)	~85%	⚡ Instant	English videos
Whisper medium	~95%	🐢 Slow	No subtitle videos

Default Output Directory

Location:
```
workspace/Bilibili transcript/
```
Created automatically on first run
All transcript files organized in one place

File Naming

Output files are named:

[VideoTitle]_[BVID]_transcript.txt

Special characters (including Chinese punctuation) are replaced with underscores
Title truncated to 50 characters

Example:

股票分红_是从左口袋掏右口袋吗_BV1ddzUYTE27_transcript.txt

Subtitle Priority

The script tries subtitles in this order:

Manual CC subtitles (zh-CN, zh-TW, en, ja, etc.)
AI subtitles (any available language: ai-zh, ai-en, ai-ja, etc.)
Whisper voice transcription (fallback)

This ensures fastest processing while maintaining high accuracy.