MP3 (formally MPEG-one Audio Layer III or MPEG-2 Audio Layer III)[4] is a coding structure for electronic audio formulated mainly by the Fraunhofer Society in Germany, with assistance from other electronic experts in the United States and somewhere else. Originally outlined given that the 3rd audio format in the MPEG-1 https://mp3juice.tel/how-to-convert-mp4-to-mp3/