Initial release — OpenMontage: the first open-source agentic video production system

11 production pipelines, 47 tools, 124 agent skills.
Supports cloud APIs (fal.ai, OpenAI, ElevenLabs, Suno, HeyGen, Runway) and
free local providers (diffusers, Piper TTS, WAN 2.1, Hunyuan, CogVideo).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.agents/skills/video-download/SKILL.md

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+---
+name: video-download
+description: |
+  Download video and audio from YouTube and 1000+ sites using yt-dlp. No API keys needed.
+  Use when: (1) Downloading a video from YouTube or other sites, (2) Extracting audio from a video URL,
+  (3) Downloading subtitles/captions from a video, (4) Getting video metadata without downloading.
+---
+
+# video-download
+
+Download video and audio from URLs using yt-dlp directly. No wrapper scripts needed.
+
+## Prerequisites
+
+- **yt-dlp**: `brew install yt-dlp` or `pip install yt-dlp`
+- **ffmpeg**: `brew install ffmpeg` or `apt install ffmpeg` (required for merging video+audio streams)
+
+Update yt-dlp periodically to keep up with site changes: `yt-dlp -U` or `pip install -U yt-dlp`.
+
+## Commands
+
+### Download best quality
+
+```bash
+yt-dlp "URL" -o "%(title)s.%(ext)s" --merge-output-format mp4
+```
+
+### Download specific resolution
+
+```bash
+# 720p
+yt-dlp "URL" -f "bestvideo[height<=720]+bestaudio/best[height<=720]" --merge-output-format mp4
+
+# 1080p
+yt-dlp "URL" -f "bestvideo[height<=1080]+bestaudio/best[height<=1080]" --merge-output-format mp4
+```
+
+### Audio only
+
+```bash
+yt-dlp "URL" -x --audio-format mp3 --audio-quality 0
+```
+
+### Download subtitles
+
+```bash
+# Download video with English subtitles
+yt-dlp "URL" --write-subs --sub-langs en --merge-output-format mp4
+
+# Download video with multiple subtitle languages
+yt-dlp "URL" --write-subs --sub-langs "en,es,fr" --merge-output-format mp4
+
+# Download only subtitles (no video)
+yt-dlp "URL" --write-subs --sub-langs en --skip-download
+```
+
+### Get metadata (no download)
+
+```bash
+yt-dlp "URL" --dump-json --no-download
+```
+
+### List available formats
+
+```bash
+yt-dlp "URL" -F
+```
+
+### Specify output directory
+
+```bash
+yt-dlp "URL" -o "./downloads/%(title)s.%(ext)s" --merge-output-format mp4
+```
+
+## Quality Presets
+
+| Quality | Format flag |
+|---------|-------------|
+| Best | `-f "bestvideo+bestaudio/best"` (default) |
+| 1080p | `-f "bestvideo[height<=1080]+bestaudio/best[height<=1080]"` |
+| 720p | `-f "bestvideo[height<=720]+bestaudio/best[height<=720]"` |
+| 480p | `-f "bestvideo[height<=480]+bestaudio/best[height<=480]"` |
+| Worst | `-f "worstvideo+worstaudio/worst"` |
+
+## Output Template Variables
+
+Common variables for `-o` templates:
+
+| Variable | Description |
+|----------|-------------|
+| `%(title)s` | Video title |
+| `%(ext)s` | File extension |
+| `%(id)s` | Video ID |
+| `%(uploader)s` | Channel/uploader name |
+| `%(upload_date)s` | Upload date (YYYYMMDD) |
+| `%(duration)s` | Duration in seconds |
+| `%(resolution)s` | Video resolution |
+
+## Tips
+
+- Always use `--merge-output-format mp4` to avoid ending up with `.webm` or `.mkv` files.
+- Use `--no-download` with `--dump-json` for metadata-only queries -- no files written to disk.
+- If a download fails with HTTP errors, update yt-dlp first (`yt-dlp -U`).
+- Use `-f "bestvideo[height<=720]+bestaudio"` to save bandwidth when full resolution is not needed.
+- yt-dlp automatically handles rate limiting and retries.
+- The `--dump-json` output includes `title`, `duration`, `uploader`, `view_count`, `description`, `formats`, `subtitles`, and much more.
+
+## Troubleshooting
+
+- **"yt-dlp: command not found"**: Install it (`pip install yt-dlp`) and ensure your PATH includes pip's bin directory.
+- **"ffmpeg: command not found"**: Install ffmpeg. Without it, downloads fail when video and audio are separate streams (common on YouTube for HD).
+- **Downloads fail or return errors**: Run `yt-dlp -U` to update. Sites change frequently and yt-dlp ships fixes regularly.