The EXTM3U format appeared as an extension of the M3U format (hence the name-extended m3u) widely used to form a playlist with a list of audio recordings. Initially, this format was used in the Winamp media player, but eventually gained high popularity, and it eventually began to support almost all players. Now m3u has become almost a standard for the formation of playlists of media players and media devices that play audio and video content.