This segment potentially is made up of original investigation. Be sure to strengthen it by verifying the promises manufactured and introducing inline citations. Statements consisting only of first investigate should be taken off. (October 2021) (Learn how and when to eliminate this template message) Reasonably new, and usually available as http://cunori.edu.gt/campus/app/upload/users/8/8923/my_files/differences-in-mp3-and-mp4-video-and-music-formats.html