425 MPEG 1/2 Audio Layer 3 Streaming MP3 Text (Unstructured) A plain-text playlist of one or more media files and their location. Text 1 Digital Preservation Department / The National Archives 02 Aug 2005 v.118: Description and links added as part of PRONOM Research Week 2023. The Church of Jesus Christ of Latter-day Saints. V.120: Added extension m3u8. 17 Apr 2024 audio/mpeg MIME x-fmt/279 PUID m3u File extension m3u8 File extension Is subsequent version of 923 MPEG Audio Stream Layer II