{
 "id": "dvd-data-file-and-backup-data-file",
 "name": "DVD data file and backup data file",
 "category": "other",
 "identifiers": {
  "extensions": [
   "ifo",
   "bup"
  ],
  "puid": [
   "x-fmt/419"
  ],
  "wikidata": [
   "Q13454995"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "445644564944454f2d56",
    "notes": "IFO/BUP"
   }
  ],
  "signatures": [
   {
    "name": "IFO/BUP",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "445644564944454f2d56(4d47|5453)"
     }
    ]
   }
  ]
 },
 "status": "readable",
 "summary": "IFO files contain DVD-Video Disc Information including headers that tell the DVD player what screen to show at startup, where each chapter starts, where audio tracks are located on the disc, etc. IFO files are accompanied by BUP files which are backups of the IFO files and therefore completely identical.",
 "tools": [
  {
   "name": "Mediamatics DVDExpress",
   "url": "https://www.wikidata.org/wiki/Q119846899",
   "reads": true,
   "writes": false
  },
  {
   "name": "PhotoRec",
   "url": "http://www.cgsecurity.org/wiki/PhotoRec",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true
  },
  {
   "name": "PowerDVD",
   "url": "https://www.cyberlink.com/products/powerdvd-ultra/overview_en_US.html",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Q3898244",
   "url": "https://MediaArea.net/MediaInfo",
   "reads": true,
   "writes": false,
   "license": "BSD licenses / GNU General Public License / GNU Lesser General Public License",
   "open_source": true
  },
  {
   "name": "VLC media player",
   "url": "https://www.videolan.org/vlc/",
   "reads": true,
   "writes": false,
   "license": "GNU Lesser General Public License, version 2.1 or later",
   "open_source": true
  }
 ],
 "projects": [
  {
   "name": "PRONOM x-fmt/419",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/x-fmt/419",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q13454995",
   "url": "https://www.wikidata.org/wiki/Q13454995",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}