1103 3GPP Audio/Video File Audio, Video An audiovisual container typically associated with 3G mobile phones and is developed by the Third Generation Partnership Project. May contain video/audio or audio only. 1 Digital Preservation Department / The National Archives 21 Jun 2011 04/2024 (v.118)- Description created and notes added. Submitted by The Church of Jesus Christ of Latter-Day Saints as part of PRONOM Research Week 2023. 16 Apr 2024 audio/3gpp MIME fmt/357 PUID video/3gpp MIME 3gp File extension 3gpp File extension 526 3GPP Audio/Video File Header: The 4 letters 'ftyp' identifies the atom/box type as an ftyp box, the next 4 indicate the ftyp code for the "major brand". The brand sequence indicates the 'best use' of the file, and has several different profiles: basic, streaming-server, progressive-download, extended-presentation, media stream recording, file delivery, adaptive streaming. 1 Absolute from BOF 4 667479703367(65|67|68|70|72|73|74)[34:39]0000[00:03]00 Can contain 1102 Adaptive Multi-Rate Audio Has priority over 924 MPEG-4 Media File