{
 "id": "microsoft-prx-file",
 "name": "Microsoft PRX File",
 "category": "other",
 "identifiers": {
  "extensions": [
   "prx"
  ],
  "mime": [
   "application/octet-stream"
  ],
  "puid": [
   "fmt/1043"
  ],
  "wikidata": [
   "Q50419827"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "fffe3c005000520058003e",
    "notes": "Microsoft PRX"
   }
  ],
  "signatures": [
   {
    "name": "Microsoft PRX",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "fffe3c005000520058003e"
     }
    ]
   }
  ]
 },
 "status": "unknown",
 "summary": "PRX files are media encoding configuration preset files used by Microsoft products including Microsoft Expression Encoder and Windows Media Encoder.",
 "tools": [
  {
   "name": "Microsoft Expression Encoder",
   "url": "http://www.microsoft.com/expression/",
   "reads": true,
   "writes": false
  }
 ],
 "projects": [
  {
   "name": "PRONOM fmt/1043",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/1043",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q50419827",
   "url": "https://www.wikidata.org/wiki/Q50419827",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}