Question about youtube music download on Windows 11

Recording system audio while playing a YouTube video is one of the oldest methods for youtube music download. It works by capturing whatever sound your computer outputs in real time, meaning no specialized downloader app is needed. Tools like OBS Studio can tap into your system's audio stream and record it as you play the video. 

Steps for YouTube Music Download:

Install a recording tool — Download OBS Studio for free on Windows, macOS, or Linux.

In OBS, set the recording input to "Stereo Mix" (Windows) or use a loopback device on Mac/Linux. In OBS, add an "Audio Output Capture" source.

Test levels — Play a few seconds of the video and check that audio levels are registering in the app before committing to a full recording.

Hit record — Start recording in your app, then play the YouTube video from the beginning at full quality.

Stop and trim — Once the video ends, stop the recording and trim any silence from the start and end of the track.

Export — Save the file in your preferred format, such as MP3 or WAV.

Cons

• Real-time only — you must play the video at normal speed from start to finish, so downloading a 10-minute song takes at least 10 minutes.
• Quality loss — recording system audio introduces an extra encoding step, meaning the output is never quite as clean as a direct download.
• Captures everything — any notification sounds, system beeps, or other audio playing on your computer will be mixed into the recording.