The term refers to software or online services designed to extract audio in the MP3 format from video content hosted on YouTube. These tools enable users to save the audio portion of YouTube videos as separate, standalone MP3 files. An example of their use is creating an offline audio library from lectures or music videos found on the platform.
The significance of such tools lies in their utility for users seeking to access audio content without requiring a constant internet connection or the video component. They allow for convenient listening on devices such as MP3 players or smartphones and can be useful for educational purposes, language learning, or simply enjoying music. Historically, the demand for these services grew alongside the popularity of portable music players and the proliferation of online video streaming.