The phrase describes the process of extracting audio from video content hosted on a popular video-sharing platform and converting it into a specific audio file format, namely, MP3, at a defined bitrate of 320 kilobits per second (kbps). The bitrate represents the amount of data used per unit of time, directly affecting the sound quality of the resultant audio file. A higher bitrate, such as 320 kbps, generally translates to improved audio fidelity when compared to lower bitrates.
Converting online video audio to this particular format and bitrate offers advantages to users seeking high-quality audio experiences on portable devices. Historically, it provided a means to circumvent restrictions related to offline access or direct audio downloads on the source video platform. It allowed for archival of audio content and playback on a variety of devices and software applications. The perceived improvement in audio quality over lower bitrates contributes to a more satisfying listening experience, especially for music.