Youtube Cobalt Quick Download

One-click download button injected directly into the YouTube player toolbar — opens cobalt.meowing.de with the video URL pre-filled. No copy-pasting, no hassle.

How it works

1. Click the ↓ button in the YouTube player toolbar
2. cobalt.meowing.de opens in a new tab with the URL ready
3. Pick your settings → hit download



Processing in progress	Download complete — 196 MB

Installation

1. Install a userscript manager

Extension	Browser
ScriptCat ⭐ recommended	Chrome, Firefox, Edge, Safari
Tampermonkey	Chrome, Firefox, Edge, Safari

2. Install the script

Download cobalt-quick-download.user.js and drag & drop it into your userscript manager dashboard — or click the file directly if your manager supports auto-install.

3. Done

Navigate to any YouTube video. The download button appears in the player toolbar automatically.

Recommended Settings

Configure cobalt.meowing.de once and every download will follow your preferences.

🎬 Video

Cobalt Video Settings.png

Setting	Recommended	Notes
Quality	`4k`	Falls back to next best if unavailable
Codec	`av1 + opus`	Best quality & efficiency, supports 8K + HDR
Container	`auto`	mp4 for h264 · webm for av1/vp9

🎵 Audio

Cobalt Audio Settings.png

Setting	Recommended	Notes
Format	`best`	Keeps original format, no re-encoding
Bitrate	`128kb/s`	Going higher won't improve quality
YouTube quality	enabled	Picks highest available audio track

🗂 Metadata

Cobalt Metadata Settings.png

Setting	Recommended	Notes
Filename style	`basic`	`Title - Author (quality, codec).ext`
Saving method	`download`	Saves directly without prompting
Subtitles	your language	Added automatically if available

Notes

The script only triggers the cobalt frontend — no API calls are made directly
No auth issues, no CORS, no rate limits
The URL is passed via #hash, which cobalt reads natively
Works on youtube.com/watch* and youtu.be/*