🔴 Strict Execution Rule (Highest Priority)

Every instruction, step, and check in this SKILL.md must be followed exactly as written — no deviations allowed.

• Scripts must be actually executed: The youtube-upload.ts script must be run with all required parameters. Do not simulate or manually construct API calls.
• Steps must not be skipped or merged: Execute authentication, metadata sanitization, and upload in the defined order. Each step must succeed before the next begins.
• Checks must not be omitted: All metadata validation (title ≤100 chars, description ≤5000 chars, tags ≤500 chars) and upload verification must be fully executed.
• Config must be read from files: OAuth credentials and default settings must be read from the configured files. Do not hardcode.

---

YouTube Publisher

First time? If setup_complete: false above, run ./SETUP.md first, then set setup_complete: true.

Upload videos to YouTube with full metadata control.

Live broadcasts and encoder streams

Use youtube-live.ts to list, inspect, schedule, update, bind, transition, and delete YouTube Live broadcasts and encoder streams. Mutating commands support --dry-run; destructive deletion, live/completed transitions, and stream-key disclosure require explicit --yes. Stream keys are redacted from ordinary output.

The safe default is one dedicated named encoder stream per independent show/event. Intentional reuse across active or upcoming broadcasts requires --allow-shared-stream.

Read references/live-streaming.md before operating a live event. Scheduled timestamps must include an explicit timezone (Z or ±HH:MM).

The skill passes --inherit-previous before creation unless the user requests a clean profile. The raw CLI remains deterministic and offline without that explicit flag.

An interrupted video insert is never retried inside youtube-upload.ts. Recovery must identify exactly one recent same-title video with a verified non-zero duration. Persistent P0D exits 42 with PERSISTENT_P0D_VIDEO_ID; unavailable or inconclusive inspection exits 43 with AMBIGUOUS_UPLOAD_VIDEO_ID. Inspect the channel before another insert.

Caption recovery updates one exact language/name track in place or inserts a new track. It never deletes an existing caption before the replacement upload succeeds.

Metadata sanitization

• > in title/description is automatically rewritten to 》
• < in title/description is automatically rewritten to 《
• Use this when YouTube rejects metadata because of special characters

Quick Start

cd ~/.claude/skills/youtube-publisher/scripts

# First time: authenticate
npx ts-node youtube-upload.ts --auth

# Upload video
npx ts-node youtube-upload.ts \
  --video /path/to/video.mp4 \
  --title "My Awesome Video" \
  --description "Check out this amazing content!" \
  --tags "tech,ai,tutorial" \
  --privacy unlisted

# Upload as YouTube Short (vertical video)
npx ts-node youtube-upload.ts \
  --video /path/to/short.mp4 \
  --title "Quick Tip #Shorts" \
  --description "A quick tip for you!" \
  --privacy public \
  --short

Options

Option	Short	Description
--video	-v	Video file path (required)
--title	-t	Video title (required)
--description	-d	Video description
--tags		Comma-separated tags
--privacy	-p	Privacy: public, unlisted, private (default: unlisted)
--category	-c	Category ID (default: 22 = People & Blogs)
--thumbnail		Custom thumbnail image (local path or URL)
--subtitles		Subtitle file path (SRT/VTT)
--subtitle-lang		Subtitle language code (default: zh)
--subtitle-name		Subtitle display name (default: 中文)
--short		Mark as YouTube Short
--auth		Run OAuth2 authentication flow
--dry-run		Preview without uploading

Playlist catalog export

Export every public playlist owned by the authenticated channel, including ordered video IDs and thumbnails. The blog synchronizer consumes this deterministic JSON to build /series/, GitHub series pages, and the resource-site guide hub.

This command is read-only. The author manually maintains playlist membership before requesting the final notification; export-playlists.ts must never add, remove, reorder or infer playlist membership. The notification pipeline performs a fresh export, deploys the blog topic pages and verifies their public fingerprint before sending.

cd ~/.codex/skills/youtube-publisher/scripts
npm run export:playlists -- --output /absolute/path/youtube-playlists.json

Category IDs

ID	Category
1	Film & Animation
2	Autos & Vehicles
10	Music
15	Pets & Animals
17	Sports
19	Travel & Events
20	Gaming
22	People & Blogs
23	Comedy
24	Entertainment
25	News & Politics
26	Howto & Style
27	Education
28	Science & Technology

Authentication

First-time setup requires OAuth2 authentication:

1. Run npx ts-node youtube-upload.ts --auth
2. Browser opens Google login
3. Grant permissions to upload videos
4. Token is saved to .youtube-token.json

Token refreshes automatically. Re-run --auth if expired.

Environment

Create scripts/.env:

YOUTUBE_CLIENT_ID=your_client_id
YOUTUBE_CLIENT_SECRET=your_client_secret

Get credentials from Google Cloud Console:

1. Create project at console.cloud.google.com
2. Enable YouTube Data API v3
3. Create OAuth2 credentials (Desktop app)
4. Download and extract client_id & client_secret

Examples

Upload Tutorial Video

npx ts-node youtube-upload.ts \
  -v tutorial.mp4 \
  -t "How to Use Claude Code - Complete Guide" \
  -d "Learn everything about Claude Code in this comprehensive tutorial.

Timestamps:
00:00 Introduction
02:30 Getting Started
05:00 Advanced Features

#ClaudeCode #AI #Tutorial" \
  --tags "claude code,ai,tutorial,anthropic,coding" \
  --category 28 \
  --privacy public

Upload YouTube Short

npx ts-node youtube-upload.ts \
  -v short_video.mp4 \
  -t "Mind-blowing AI trick! #Shorts" \
  -d "This will change how you work! #AI #Tech" \
  --privacy public \
  --short

Upload with Thumbnail and Subtitles

npx ts-node youtube-upload.ts \
  -v tutorial.mp4 \
  -t "Tutorial with Subtitles" \
  -d "Learn step by step with subtitles" \
  --thumbnail /path/to/cover.jpg \
  --subtitles /path/to/subtitles.srt \
  --subtitle-lang zh \
  --subtitle-name "中文" \
  --privacy public

Upload with Local Thumbnail

npx ts-node youtube-upload.ts \
  -v video.mp4 \
  -t "My Video Title" \
  --thumbnail "/Users/m/Downloads/shell/work/cover.jpg" \
  --privacy public

Retry Only a Failed Thumbnail

Use the dedicated recovery command when the video already exists and only its custom thumbnail needs to be uploaded again. It validates the video ID and local JPG/PNG file, retries transient failures, verifies that the target video is readable, and prints structured result markers.

npx ts-node upload-thumbnail.ts \
  --video-id VIDEO_ID \
  --thumbnail /path/to/cover.jpg \
  --attempts 3

This command never deletes or uploads a video. Do not create one-off recovery scripts with hardcoded video IDs or local paths.

Output

On success, returns:

• Video ID
• Video URL (https://youtu.be/VIDEO_ID)
• Status

Limitations

• Max file size: 256GB (YouTube limit)
• Supported formats: MP4, MOV, AVI, WMV, FLV, 3GP, MPEG
• Supported subtitle formats: SRT, VTT
• Daily upload quota: 10,000 units (typically ~6 videos/day)
• Title max: 100 characters
• Description max: 5,000 characters
• Tags max: 500 characters total

Changelog

v1.7.1 - Unknown-Flag Fail-Fast (2026-09-28)

• youtube-update-description.ts v1.8（2026-10-01）章节显示契约门禁：上传前校验描述里的章节块必须满足 YouTube 硬规则（首章 0:00 / 每章 ≥10 秒 / ≥3 章），违规拒绝上传并 exit 3（列出具体违规）。原因：任一条不满足时 YouTube 静默忽略整份章节列表——描述看着正常、播放轴却没有章节（2026-10-01 charles_schwab 0:00/0:01 相邻 1 秒，18 章全废）。描述里完全没有章节块时只打 WARN 不拦。修复用 duanku-youtube-publish/scripts/split_description_chapters.py（内置自愈）/ 复检 --validate。
• youtube-update-description.ts 遇到未知 -- 参数直接报错退出（exit 2），不再静默忽略。背景：当日测试 --dry-run（不存在的 flag）被静默吞掉，截断的测试文件真实上传；fail-fast 杜绝同类误操作。

v1.7.0 - Baseline-Header Upload Guard (2026-09-28)

• youtube-update-description.ts 现在会在上传前自动剥离 duanku 基线头：--description-file 内容若以 # YouTube description baseline 开头（run_pipeline v2.46+ 落盘的人工 diff 参照文件），去掉头部注释块后上传并打印 NOTE: stripped baseline header before upload (v1.7 guard)。
• 背景：9/15(tello)/9/27(capital_one)/9/28(maya) 三次 agent 驱动的描述编辑把带头的基线文件原样重传，6 行 # 注释泄漏到线上 YouTube 说明区（tello/capital_one 由用户手工清除，maya 已由本版本修复）。守卫落在上传口，此后任何调用路径都无法再把头推上线。

v1.6.0 - Safe Thumbnail-Only Recovery (2026-07-28)

• Added upload-thumbnail.ts with parameter validation, bounded retry, target-video verification, and structured output.
• Removed the hardcoded thumbnail repair script that also deleted a fixed video ID.
• Expanded the production TypeScript gate to cover the thumbnail recovery command.

v1.1 - Resumable Upload + Retry (2026-04-22)

• Fixed EPIPE error on large file uploads by switching to resumable upload with progress tracking
• Added automatic retry (up to 3 attempts) for transient network errors (EPIPE, ETIMEDOUT, ECONNRESET)
• Added upload progress logging (every 10%)
• Added media.mimeType for better upload compatibility

v1.0 - Initial Release

• Basic video upload with metadata
• Thumbnail, subtitle, playlist support
• OAuth2 authentication