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starmen1265 9259a3731a feat: 添加知乎视频支持

新增:
- kb-zhihu-content/: 知乎视频下载模块
  - zhihu_content.py: 视频下载工具（使用 yt-dlp）
  - SKILL.md: 技能说明文档

修改:
- kb_workflow.py:
  - CONTENT_AGENTS 添加 zhihu
  - VIDEO_CONTENT_TYPES 添加 zvideo

- SKILL.md:
  - 添加 4.1.2 知乎视频处理流程
  - 更新子技能清单，添加知乎视频条目
  - 更新内容类型判断表格

2026-02-16 22:19:25 +08:00

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KB Zhihu Content Skill

kb-zhihu-content - Download Zhihu videos and extract content.

Features

Video download using yt-dlp
Subtitle extraction (returns no subtitle, triggers Whisper)
Supports ZHIHU_COOKIE environment variable

Environment Variables

Variable	Required	Description
`ZHIHU_COOKIE`	No	知乎登录 Cookie (for member-only videos)

Commands

# Download video
python zhihu_content.py --id "12345678" --type video --output "/path/to/downloads/"

# Extract subtitle (returns no subtitle, triggers Whisper)
python zhihu_content.py --id "12345678" --type subtitle --output "/path/to/subtitles/"

Output

{
  "success": true,
  "type": "video",
  "filename": "video_title.mp4",
  "filepath": "/path/to/downloads/video_title.mp4",
  "message": "下载完成: video_title.mp4"
}

Installation

# Already included in kb-skills repo
# Ensure yt-dlp is installed
pip install yt-dlp aiohttp

How It Works

Video download uses yt-dlp:

Parses ZHIHU_COOKIE environment variable (optional)
Creates temporary Netscape-format cookie file
Runs yt-dlp -f best -o <output> <url>
Cleans up temporary file

Notes

知乎视频通常没有官方字幕，将自动触发 Whisper 语音识别
视频下载需要能访问知乎（可能需要代理）

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