The phrase references the process of extracting audio, specifically in the MP3 format, from video content hosted on the YouTube platform. A common variation on this terminology also appears, representing a specific, now defunct, service which provided this functionality. These tools enable users to obtain audio-only versions of music, lectures, or other sound-based content found on the video-sharing site.
The ability to isolate and download audio from online videos presents numerous advantages. It allows for offline listening, conserving data usage and enabling access in areas with limited or no internet connectivity. Historically, this functionality has been utilized for purposes ranging from creating personalized playlists to archiving educational content. However, the practice raises copyright considerations, particularly when distributing or using copyrighted material without authorization.