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SKILL.md

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+---
+name: video-transcript-downloader
+description: "从YouTube和任何其他yt-dlp支持的站点下载视频、音频、字幕和干净的段落式转录。"
+---
+
+# Video Transcript Downloader
+
+`./scripts/vtd.js` can:
+- Print a transcript as a clean paragraph (timestamps optional).
+- Download video/audio/subtitles.
+
+Transcript behavior:
+- YouTube: fetch via `youtube-transcript-plus` when possible.
+- Otherwise: pull subtitles via `yt-dlp`, then clean into a paragraph.
+
+## Setup
+
+```bash
+cd ~/Projects/agent-scripts/skills/video-transcript-downloader && npm ci
+```
+
+## Transcript (default: clean paragraph)
+
+```bash
+./scripts/vtd.js transcript --url 'https://…'
+./scripts/vtd.js transcript --url 'https://…' --lang en
+./scripts/vtd.js transcript --url 'https://…' --timestamps
+./scripts/vtd.js transcript --url 'https://…' --keep-brackets
+```
+
+## Download video / audio / subtitles
+
+```bash
+./scripts/vtd.js download --url 'https://…' --output-dir ~/Downloads
+./scripts/vtd.js audio --url 'https://…' --output-dir ~/Downloads
+./scripts/vtd.js subs --url 'https://…' --output-dir ~/Downloads --lang en
+```
+
+## Formats (list + choose)
+
+List available formats (format ids, resolution, container, audio-only, etc):
+
+```bash
+./scripts/vtd.js formats --url 'https://…'
+```
+
+Download a specific format id (example):
+
+```bash
+./scripts/vtd.js download --url 'https://…' --output-dir ~/Downloads -- --format 137+140
+```
+
+Prefer MP4 container without re-encoding (remux when possible):
+
+```bash
+./scripts/vtd.js download --url 'https://…' --output-dir ~/Downloads -- --remux-video mp4
+```
+
+## Notes
+
+- Default transcript output is a single paragraph. Use `--timestamps` only when asked.
+- Bracketed cues like `[Music]` are stripped by default; keep them via `--keep-brackets`.
+- Pass extra `yt-dlp` args after `--` for `transcript` fallback, `download`, `audio`, `subs`, `formats`.
+
+```bash
+./scripts/vtd.js formats --url 'https://…' -- -v
+```
+
+## Troubleshooting (only when needed)
+
+- Missing `yt-dlp` / `ffmpeg`:
+
+```bash
+brew install yt-dlp ffmpeg
+```
+
+- Verify:
+
+```bash
+yt-dlp --version
+ffmpeg -version | head -n 1
+```