ArcDLP

Open-source desktop video downloader powered by yt-dlp. Paste a URL, pick a quality, download.

Supports YouTube, Vimeo, Twitter/X, SoundCloud, Instagram, and thousands of other sites.

Everything runs locally on your machine - no cloud, no accounts, no tracking.

Download

  

Download & Install

Download the latest release

Go to the Releases page, scroll down to Assets, and click the file for your system:

• macOS: ArcDLP-x.x.x.dmg
• Windows: ArcDLP-Setup-x.x.x.exe
• Linux: ArcDLP-x.x.x.AppImage

No dependencies to install. yt-dlp and ffmpeg are bundled inside the app.

macOS

1. Download the .dmg file
2. Open it and drag ArcDLP to your Applications folder
3. Open ArcDLP

macOS will show a security warning the first time because the app is not code-signed yet. This is normal.

To fix it:

1. Click Done
2. Open System Settings
3. Go to Privacy & Security
4. Scroll down and click Open Anyway next to ArcDLP
5. Enter your password

You only need to do this once.

Windows

1. Download and run the .exe installer
2. Click More info, then click Run anyway
3. The installer will set up ArcDLP and create a shortcut automatically

ArcDLP installs per-user (no admin required) and can be uninstalled from Settings > Apps.

Linux

1. Download the .AppImage file
2. Make it executable: right-click → Properties → Permissions → check Allow executing file as program
3. Double-click to run

Features

• Single video downloads - Fetch video info, preview metadata, choose quality (4K/2K/1080p/720p/480p/360p/240p), and download as MP4 or extract audio as MP3
• Playlist support - Paste a playlist URL, select which items to download, pick a format, and queue them all at once
• Instagram saved collections - Paste a saved collection URL, the app scrapes all post links from the collection page, and queues them for download
• Download queue - Sequential processing with per-item progress, retry, cancel, and skip. One failure never stops the rest
• YouTube sign-in - Access age-restricted, private, and members-only content through a built-in browser login window. Credentials go directly to Google
• Instagram sign-in - Access your private saved collections through a built-in browser login window. Credentials go directly to Instagram
• Download history - Quick access to previously fetched videos with cached metadata
• Multi-site compatibility - Works with any site yt-dlp supports. Format detection adapts automatically to different streaming approaches across sites
• Update notifications - The app checks for new releases on startup and lets you know when an update is available
• Light and dark mode - Follows your system preference. macOS vibrancy supported

Usage

1. Paste a video or playlist URL and click Fetch
2. Pick a quality (or choose MP3 for audio extraction)
3. Click Add to Queue
4. Downloads are saved to ~/Downloads/ArcDLP by default (changeable in Settings)

For playlists, you can select/deselect individual items and choose a format for the whole batch before queueing.

To access private or age-restricted YouTube videos, sign in via Settings > YouTube Account. Your credentials go directly to Google through their standard login page.

Instagram Saved Collections

yt-dlp supports downloading individual Instagram posts and reels, but it has no extractor for saved collections. ArcDLP bridges this gap with a built-in scraper.

1. Sign in to Instagram via Settings > Instagram Account
2. Paste a saved collection URL (e.g. https://www.instagram.com/username/saved/collection-name/12345/)
3. Click Fetch - the app opens the collection page in a hidden browser window using your Instagram session
4. It scrolls through the page, collecting all <a> tags with /p/ and /reel/ href patterns
5. Found posts appear in a playlist-style picker where you can select/deselect items
6. Click Add Selected to Queue - each post is downloaded individually via yt-dlp with your Instagram cookies

The scraper stops after 5 consecutive scrolls with no new posts, or after a 3-minute timeout (partial results are returned if any were found). Large collections may be rate-limited by Instagram.

Support the Project

If ArcDLP is useful to you, consider supporting development:

• Sponsor on GitHub
• Buy Me a Coffee

---

For Developers

Everything below is for people who want to build from source, modify the app, or contribute.

Contributing

Contributions are welcome. The codebase is intentionally simple - no frameworks, no build tools, vanilla JS throughout.

Before making changes, read through the code and match existing patterns. A few principles the project follows:

• Keep it simple. If something can be done in 30 lines, don't use a library.
• Resilience first. One failure should never kill the queue. Users should always know what's happening.
• Explicit actions only. No auto-fetching, no auto-retrying. Every action traces to a button click.
• Let yt-dlp do the work. Don't reimplement what yt-dlp already handles. The app is a GUI wrapper, not a competing tool.
• Multi-site compatibility. Never assume YouTube-specific behavior unless explicitly scoped. Format detection, error handling, and UI labels should work for any site yt-dlp supports.

Getting Started

1. Fork and clone the repo
2. npm install (downloads yt-dlp + ffmpeg automatically) - See details below for Windows and Linux install
3. npm run dev to launch with DevTools - See more details below
4. Make your changes, test across a few different sites
5. Open a PR with a clear description of what changed and why

Build from Source

git clone https://github.com/archisvaze/arcdlp.git
cd arcdlp
npm install

Cross-platform builds

Both ffmpeg-static and the yt-dlp postinstall script download platform-specific binaries during npm install. On macOS, this works automatically, no setup needed.

If you're building for a different architecture (e.g. building the Linux x64 AppImage from an ARM machine), set these environment variables before npm install to ensure the correct binaries are downloaded:

Windows (x64):

$env:npm_config_platform = "win32"
$env:npm_config_arch = "x64"
rm -r -Force node_modules
npm install

Linux (x64):

export npm_config_platform=linux
export npm_config_arch=x64
rm -rf node_modules bin
npm install

Only one binary per platform is downloaded per install. If you need to switch target architectures, delete node_modules and bin and run npm install again with the new env vars.

Development

npm run dev          # macOS / Linux
npm run dev:win      # Windows

This launches the app with DevTools enabled and verbose logging.

Production Builds

npm run build:mac      # macOS - produces .dmg and .zip
npm run build:win      # Windows - produces NSIS installer
npm run build:linux    # Linux - produces AppImage
npm run build:all      # All platforms

Both yt-dlp and ffmpeg binaries are bundled into the built app via extraResources in package.json.

Project Structure

arcdlp/
├── src/
│   ├── main/
│   │   ├── main.js          # Electron main process, IPC, window, history
│   │   ├── preload.js        # Context bridge (window.api)
│   │   ├── ytdlp.js          # yt-dlp integration: spawn, parse, download
│   │   ├── queue.js          # Sequential download queue with per-item state
│   │   ├── cookies.js        # YouTube + Instagram cookie auth
│   │   ├── scraper.js        # Instagram collection scraper (BrowserWindow)
│   │   ├── updater.js        # Update checker via GitHub Releases API
│   │   └── utils.js          # Dev mode flag, logging helpers
│   └── renderer/
│       ├── index.html        # UI structure
│       ├── renderer.js       # UI logic, state, rendering
│       └── index.css         # All styles
├── scripts/
│   ├── postinstall.js        # Downloads yt-dlp binary on npm install
│   └── fix-ffmpeg-win.js     # Renames ffmpeg for Windows builds
├── bin/                      # yt-dlp binary (auto-populated by postinstall)
├── build/                    # App icons (icon.icns, icon.ico, icon.png)
├── package.json
├── LICENSE
└── README.md

How It Works

1. User pastes a URL and clicks Fetch
2. App spawns yt-dlp --dump-json to get video metadata and available formats
3. User picks a quality preset or audio extraction
4. Click "Add to Queue" - the download is queued and processed sequentially
5. yt-dlp handles the actual download with --progress-template for structured progress output
6. Completed files are saved to the configured download folder

For playlists, the app uses --flat-playlist --dump-json to stream items one at a time, then queues selected items for download.

For Instagram saved collections, the app opens the collection page in a hidden BrowserWindow, scrolls through it collecting anchor tags (<a href="/p/...">) and (<a href="/reel/...">) via executeJavaScript, then presents the scraped URLs in the playlist picker UI. Each post is then downloaded individually by yt-dlp using the Instagram session cookies.

Dependencies

Only two runtime dependencies:

• electron-store - Persistent settings and history
• ffmpeg-static - Bundled ffmpeg binary for audio extraction and format merging

Dev dependencies: electron, electron-builder.

yt-dlp handles all downloading, format selection, and ffmpeg orchestration internally. The app is a GUI wrapper around it.

Roadmap

ArcDLP covers the core download workflow, but yt-dlp has a huge feature set that could be surfaced in the GUI. Here's what's planned and where contributors can help.

Quality of Life

• Thumbnails in playlist items - The data is already fetched, just not rendered yet (completed in v1.2.3)
• File size estimates - Show approximate size on quality presets when available
• Download complete notification - System notification when the queue finishes (only if window is not focused)
• Playlist fetch cancellation - Currently can't cancel a playlist fetch mid-way through
• Verbose log toggle - Clean messages by default, raw yt-dlp output when debugging

Advanced yt-dlp Features

yt-dlp supports a lot more than basic downloading. These features would make great contributions:

• Subtitle downloads - --write-subs, --sub-langs, language selection UI
• Embed metadata - --embed-thumbnail, --embed-metadata for tagging files
• SponsorBlock integration - --sponsorblock-remove, --sponsorblock-mark to skip or mark sponsored segments
• Additional audio formats - AAC, FLAC, WAV, Opus extraction (currently MP3 only)
• Format filtering - Expose yt-dlp's format selection syntax for advanced users
• Download archive - --download-archive to skip already-downloaded videos
• Rate limiting - --limit-rate for bandwidth control
• Proxy support - --proxy for users behind restrictive networks
• Custom output templates - --output template configuration in settings
• Chapter splitting - --split-chapters to save individual chapters as separate files

App-Level Features

• Keyboard shortcuts - Quick access to common actions
• More site-specific auth - Expand the cookie login flow to more sites beyond YouTube and Instagram
• Playlist detection for more sites - Currently conservative (YouTube, SoundCloud, and Instagram saved collections)
• DOM virtualization for large playlists - Currently renders all items, works fine under ~1000

Known Cleanup Items

• video:fetch IPC returns the full raw JSON (50-200KB) even in production - should be dev-only
• Queue _items array has no upper bound - consider a cap or auto-clear
• Playlist checkbox uses inline onchange handler - could use event delegation
• Log type detection is greedy (msg.includes('complete') matches "incomplete")

License

MIT

Credits

• yt-dlp - The engine that does all the heavy lifting
• Electron - Desktop app framework
• ffmpeg - Audio/video processing (bundled via ffmpeg-static)
• electron-icon-builder - Made icon with Canva and exported the icon files via electron-icon-builder