How do I install the Bilibili AI Subtitle skill?

Run npx skillmds@latest add knownasnaffy/bilibili-ai-subtitle-5 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Bilibili AI Subtitle safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: executes scripts, makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Bilibili AI Subtitle?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Bilibili AI Subtitle free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Bilibili AI Subtitle?

knownasnaffy (@knownasnaffy) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Bilibili AI Subtitle by knownasnaffy

Name: Bilibili AI Subtitle
Rating: 4.2 (5 reviews)
Author: knownasnaffy

Bilibili AI Subtitle

Download Bilibili AI-generated subtitles (auto-subtitles) for videos. Use when you need to quickly get subtitles from Bilibili videos that have AI-generated captions. Supports 9 languages: Chinese, English, Japanese, Spanish, Arabic, Portuguese, Korean, German, French. Language priority can be customized.

knownasnaffy Updated Sep 22, 2026 0 repo stars

File contents

Bilibili AI Subtitle Downloader v2.0

Download AI-generated subtitles from Bilibili videos quickly.

What This Skill Does

This skill downloads AI-generated subtitles (自动生成的字幕) from Bilibili videos. These are subtitles automatically created by Bilibili's AI system, not manually uploaded by creators.

Key improvements from v1.x:

✅ Customizable language priority (e.g., prefer English over Chinese)
✅ Better filename format: Title_Author_Date_Duration_BVid.txt
✅ Three-part document structure (Info, Summary, Full Text)
✅ Improved UTF-8 filename handling
✅ Better WSL Chromium/Windows Edge Cookie support

Supported AI Languages

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

Usage

Basic Usage

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

Specify Language Priority

# Prefer English, fallback to Chinese
./scripts/bilibili_ai_subtitle.sh -l en,zh "BVxxxxx"

# Prefer Japanese
./scripts/bilibili_ai_subtitle.sh --lang ja "BVxxxxx"

# Multiple languages in order of preference
./scripts/bilibili_ai_subtitle.sh -l en,zh,ja,es "BVxxxxx"

Output

File name format: VideoTitle_Author_Date_Duration_BVid.txt

File structure:

第一部分：视频信息
├── 视频标题
├── B站链接
├── 作者
├── 发布时间
├── 视频时长
├── 原视频语言
└── 转录来源

第二部分：视频摘要
└── 自动生成的内容摘要

第三部分：完整原文
└── 完整字幕文本

Setup

Browser Cookie (Recommended)

For accessing member-only videos, log in to Bilibili in:

WSL Chromium (preferred): chromium-browser &
Windows Edge: Log in normally

The script will automatically detect and use available cookies.

Requirements

yt-dlp installed
Optional: Browser with Bilibili login (for member-only videos)

Notes

AI subtitles are generated automatically by Bilibili's system
Accuracy varies (typically 85-95% for clear speech)
Not all videos have AI subtitles available
Some videos may require membership to access AI subtitles

Comparison with bilibili-transcript

Feature	bilibili-ai-subtitle	bilibili-transcript
Purpose	Download AI subtitles only	Full transcription workflow
Speed	⚡ Fast (instant download)	Varies (subtitles → Whisper)
Subtitle sources	AI only	CC → AI → Whisper
Use case	Quick subtitle grab	Complete transcription
Dependencies	yt-dlp only	yt-dlp + optional Whisper

Recommendation: Use bilibili-ai-subtitle for quick AI subtitle download, use bilibili-transcript when you need complete transcription (including voice transcription for videos without subtitles).

---name: bilibili-ai-subtitle-5description: Download Bilibili AI-generated subtitles (auto-subtitles) for videos. Use when you need to quickly get subtitles from Bilibili videos that have AI-generated captions. Supports 9 languages: Chinese, English, Japanese, Spanish, Arabic, Portuguese, Korean, German, French. Language priority can be customized.---# Bilibili AI Subtitle Downloader v2.0Download AI-generated subtitles from Bilibili videos quickly.## What This Skill DoesThis skill downloads **AI-generated subtitles** (自动生成的字幕) from Bilibili videos. These are subtitles automatically created by Bilibili's AI system, not manually uploaded by creators.**Key improvements from v1.x:**- ✅ Customizable language priority (e.g., prefer English over Chinese)- ✅ Better filename format: `Title_Author_Date_Duration_BVid.txt`- ✅ Three-part document structure (Info, Summary, Full Text)- ✅ Improved UTF-8 filename handling- ✅ Better WSL Chromium/Windows Edge Cookie support## Supported AI LanguagesBilibili 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 |## Usage### Basic Usage```bash./scripts/bilibili_ai_subtitle.sh "https://www.bilibili.com/video/BVxxxxx/"```### Specify Language Priority```bash# Prefer English, fallback to Chinese./scripts/bilibili_ai_subtitle.sh -l en,zh "BVxxxxx"# Prefer Japanese./scripts/bilibili_ai_subtitle.sh --lang ja "BVxxxxx"# Multiple languages in order of preference./scripts/bilibili_ai_subtitle.sh -l en,zh,ja,es "BVxxxxx"```## Output**File name format:** `VideoTitle_Author_Date_Duration_BVid.txt`**File structure:**```第一部分：视频信息├── 视频标题├── B站链接├── 作者├── 发布时间├── 视频时长├── 原视频语言└── 转录来源第二部分：视频摘要└── 自动生成的内容摘要第三部分：完整原文└── 完整字幕文本```## Setup### Browser Cookie (Recommended)For accessing member-only videos, log in to Bilibili in:- **WSL Chromium** (preferred): `chromium-browser &`- **Windows Edge**: Log in normallyThe script will automatically detect and use available cookies.## Requirements- `yt-dlp` installed- Optional: Browser with Bilibili login (for member-only videos)## Notes- AI subtitles are generated automatically by Bilibili's system- Accuracy varies (typically 85-95% for clear speech)- Not all videos have AI subtitles available- Some videos may require membership to access AI subtitles## Comparison with bilibili-transcript| Feature | bilibili-ai-subtitle | bilibili-transcript ||---------|---------------------|---------------------|| **Purpose** | Download AI subtitles only | Full transcription workflow || **Speed** | ⚡ Fast (instant download) | Varies (subtitles → Whisper) || **Subtitle sources** | AI only | CC → AI → Whisper || **Use case** | Quick subtitle grab | Complete transcription || **Dependencies** | yt-dlp only | yt-dlp + optional Whisper |**Recommendation:** Use `bilibili-ai-subtitle` for quick AI subtitle download, use `bilibili-transcript` when you need complete transcription (including voice transcription for videos without subtitles).

Frequently asked questions