| name | video-download-faas |
| description | Download videos in MP4 format using yt-dlp with FaaS (Firecracker/Container) isolation. Start downloads, check status, and kill processes. Videos are automatically converted to MP4 format. |
Video Download FaaS
Download videos asynchronously using yt-dlp in isolated background processes. All downloads are saved as MP4 files.
Overview
This skill manages video downloads as background tasks that:
- Start immediately and return control to the user
- Continue running even if the session disconnects
- Can be monitored for progress
- Can be terminated when needed
When to Use
Use this skill when:
- Downloading large videos that take time
- Processing multiple videos concurrently
- Running downloads on remote/headless systems
- Need to continue working while downloading
Quick Start
Start a Download
scripts/download.sh "https://youtube.com/watch?v=..."
Returns immediately with:
- Session ID
- Process ID (PID)
- Log file location
Check Status
scripts/check-status.sh
scripts/check-status.sh video_dl_1234567890_12345
Kill Download
scripts/kill-download.sh video_dl_1234567890_12345
scripts/kill-download.sh video_dl_1234567890_12345 --force
Commands
download.sh
Start a video download in background with MP4 output format.
Usage:
download.sh <URL> [output_directory]
Parameters:
URL - Video URL to download (required)output_directory - Where to save video (optional, default: ~/Downloads)
Output Format:
- Downloads are automatically converted to MP4 format
- Uses best available MP4 video + M4A audio, merged into MP4
- If source isn't MP4, it will be re-encoded to MP4
Returns:
- Session ID for tracking
- PID for process management
- Paths to log and session files
Example:
scripts/download.sh "https://www.youtube.com/watch?v=dQw4w9WgXcQ" /tmp/videos
check-status.sh
Check download progress and status.
Usage:
check-status.sh
check-status.sh <session_id>
Returns:
- Process status (running/completed)
- Download progress (if running)
- Downloaded files (if completed)
- Error information (if failed)
kill-download.sh
Terminate a running download.
Usage:
kill-download.sh <session_id> [--force]
Parameters:
session_id - The session ID from download.sh--force - Use SIGKILL instead of SIGTERM
Session Management
Session files are stored in /tmp/ with format:
video_dl_{timestamp}_{pid}.session - Session metadatavideo_dl_{timestamp}_{pid}.pid - Process IDvideo_dl_{timestamp}_{pid}.log - Download log
Sessions are automatically cleaned up when:
- Download completes successfully
- Process is killed via kill-download.sh
FaaS Integration
For containerized/Firecracker execution:
./run-in-container.sh scripts/download.sh "URL"
scripts/check-status.sh
Troubleshooting
Download not starting:
- Check yt-dlp is installed:
yt-dlp --version
- Verify URL is accessible:
curl -I "URL"
Process not found:
- Session may have completed and auto-cleaned
- Check ~/Downloads for finished files
Permission denied:
- Ensure scripts are executable:
chmod +x scripts/*.sh
Requirements
- yt-dlp installed and in PATH
- Bash 4.0+
- Write access to /tmp and output directory
