{
 "id": "windows-media-metafile",
 "name": "Windows Media Metafile",
 "category": "audio",
 "identifiers": {
  "puid": [
   "fmt/584"
  ],
  "wikidata": [
   "Q298178",
   "Q27894844"
  ],
  "extensions": [
   "asx",
   "wax",
   "wxv",
   "wmx",
   "wvx"
  ],
  "mime": [
   "video/x-ms-asf",
   "audio/x-ms-wax",
   "video/x-ms-asx",
   "application/x-mplayer2",
   "application/x-ms-asx",
   "video/x-la-asf",
   "video/x-ms-asf-plugin"
  ],
  "signatures": [
   {
    "name": "Windows Media Metafile",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "max_offset": 1,
      "pattern": "3c(617378|415358)20(76657273696f6e|56455253494f4e){0-1}3d{0-3}33{0-64}3e"
     }
    ]
   }
  ]
 },
 "status": "unknown",
 "summary": "A media metafile is a file that contains information about other files. A metafile can be used to list a group of media content files that are to be played in order. The .wax metafile references Windows Media files with .asf, .wma, or .wax file name extensions. The .wvx metafile references Windows Media files with .wma, .wmv, .wvx, or .wax file name extensions. The asx metafile references Windows Media files with .wma, .wax, .wmv, .wvx, .asf, or .asx file name extensions.",
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/Windows_Media_Metafile",
   "kind": "wiki"
  },
  {
   "name": "PRONOM fmt/584",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/584",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q298178",
   "url": "https://www.wikidata.org/wiki/Q298178",
   "kind": "wiki"
  },
  {
   "name": "Wikidata Q27894844",
   "url": "https://www.wikidata.org/wiki/Q27894844",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "tools": [
  {
   "name": "Creator NXT 2",
   "url": "https://www.wikidata.org/wiki/Q123202026",
   "reads": true,
   "writes": false
  },
  {
   "name": "Q1063722",
   "url": "http://www.un4seen.com/",
   "reads": true,
   "writes": false,
   "license": "freeware"
  },
  {
   "name": "Windows Media Player, version 10",
   "url": "http://www.microsoft.com/windows/windowsmedia/player/10/default.aspx",
   "reads": true,
   "writes": false
  },
  {
   "name": "Windows Media Player, version 11",
   "url": "http://www.microsoft.com/windows/windowsmedia/player/11/default.aspx",
   "reads": true,
   "writes": false
  },
  {
   "name": "Windows Media Player, version 12",
   "url": "https://www.wikidata.org/wiki/Q28018460",
   "reads": true,
   "writes": false
  },
  {
   "name": "Windows Media Player, version 6.4",
   "url": "https://www.wikidata.org/wiki/Q139790984",
   "reads": true,
   "writes": false
  },
  {
   "name": "Windows Media Player, version 7",
   "url": "https://www.wikidata.org/wiki/Q139792281",
   "reads": true,
   "writes": false
  },
  {
   "name": "Windows Media Player, version 8",
   "url": "https://www.wikidata.org/wiki/Q139792269",
   "reads": true,
   "writes": false
  },
  {
   "name": "Windows Media Player, version 9",
   "url": "https://www.wikidata.org/wiki/Q28018572",
   "reads": true,
   "writes": false
  }
 ],
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}