This is the most common misconception in audio downloading. Most videos on YouTube are compressed to save bandwidth. YouTube typically streams audio in (inside an MP4 container). For a standard video, the audio bitrate is usually around 128 kbps to 160 kbps .
Below is a comprehensive guide to understanding YouTube audio quality, the tools you can use, and how to get the best possible sound from your downloads. The Myth vs. Reality of YouTube Audio Quality 320 kbps mp3 youtube download