The phrase refers to the process of extracting audio from the YouTube platform and converting it into a digital audio file in the MP3 format, specifically encoded at a bitrate of 320 kilobits per second. This process allows users to listen to audio content from YouTube offline, independently of the platform. As an example, a user might convert a music performance or a lecture available on YouTube into an MP3 file for playback on a portable device.
Encoding audio at 320 kbps provides a high level of audio fidelity for the MP3 format. This bitrate is often considered near-CD quality and represents a balance between file size and sound quality. This conversion practice gained popularity with the rise of digital music consumption and portable media players, offering a way to archive and access audio content beyond the confines of the YouTube platform. However, users should be mindful of copyright restrictions and terms of service when converting content.