{
 "id": "windows-media-video",
 "name": "Windows Media Video",
 "family": "windows-media-video-file-format-family",
 "category": "video",
 "identifiers": {
  "extensions": [
   "asf",
   "wmv",
   "wm"
  ],
  "mime": [
   "video/x-ms-wmv"
  ],
  "puid": [
   "fmt/133"
  ],
  "wikidata": [
   "Q27895063"
  ],
  "loc_fdd": [
   "fdd000091"
  ],
  "uti": [
   "com.microsoft.windows-media-wmv"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "3026b2758e66cf11a6d900aa0062ce6c",
    "notes": "Windows Media Video"
   }
  ],
  "signatures": [
   {
    "name": "Windows Media Video",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "3026b2758e66cf11a6d900aa0062ce6c{12}0102"
     },
     {
      "position": "var",
      "pattern": "{30}9107dcb7b7a9cf118ee600c00c205365{8}c0ef19bc4d5bcf11a8fd00805f5c442b{65}574d56(31|32|33)"
     }
    ]
   }
  ],
  "priority_over": [
   "fmt/131",
   "fmt/132"
  ]
 },
 "status": "readable",
 "summary": "Windows Media Video Format is a subtype of the Advanced Systems Format, developed by Microsoft for storing video data streams. It comprises a Header Object, which describes the properties of the data streams, a Data Object, which contains the actual data streams stored in Data Packets and, optionally, one or more Index Objects. Video data is stored using the Windows Media Video codec, and the format supports streaming across networks.",
 "tools": [
  {
   "name": "Media Player (Windows 11)",
   "url": "https://www.wikidata.org/wiki/Q109616196",
   "reads": true,
   "writes": false
  },
  {
   "name": "Microsoft Photos",
   "url": "https://www.wikidata.org/wiki/Q26328552",
   "reads": true,
   "writes": false,
   "license": "Microsoft end-user license agreement"
  },
  {
   "name": "Microsoft PowerPoint 2011",
   "url": "https://www.wikidata.org/wiki/Q28018630",
   "reads": true,
   "writes": false
  },
  {
   "name": "Microsoft PowerPoint 2013",
   "url": "https://www.wikidata.org/wiki/Q28018622",
   "reads": true,
   "writes": false
  },
  {
   "name": "Microsoft PowerPoint 2016",
   "url": "https://www.wikidata.org/wiki/Q28018608",
   "reads": true,
   "writes": false
  },
  {
   "name": "Q50938515",
   "url": "https://joinpeertube.org/",
   "reads": true,
   "writes": false,
   "license": "GNU Affero General Public License, version 3.0 or later",
   "open_source": true
  },
  {
   "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
  },
  {
   "name": "YouTube",
   "url": "https://www.youtube.com/",
   "reads": true,
   "writes": false,
   "license": "end-user license agreement"
  },
  {
   "name": "YouTube App",
   "url": "https://m.youtube.com",
   "reads": true,
   "writes": false,
   "license": "end-user license agreement / proprietary license"
  },
  {
   "name": "FFmpeg",
   "url": "https://ffmpeg.org",
   "license": "LGPL-2.1-or-later / GPL-2.0-or-later",
   "open_source": true,
   "reads": true,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "ACD FotoCanvas Lite",
   "url": "https://www.wikidata.org/wiki/Q116994901",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "ACDSee",
   "url": "https://www.acdsee.com",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "ACDSee 5",
   "url": "https://www.wikidata.org/wiki/Q116957642",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Adobe After Effects",
   "url": "https://www.adobe.com/products/aftereffects",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Adobe Atmosphere",
   "url": "https://www.adobe.com/products/atmosphere/",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Adobe Encore",
   "url": "https://www.adobe.com/products/encore/",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Adobe Premiere Pro",
   "url": "http://adobe.com/products/premiere",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Any Video Converter",
   "url": "https://www.any-video-converter.com",
   "reads": false,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "aTube Catcher",
   "url": "https://www.atube.me/",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Camtasia Studio 3.0",
   "url": "https://www.wikidata.org/wiki/Q114129834",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Camtasia Studio 4.0",
   "url": "https://www.wikidata.org/wiki/Q119518202",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "CineAsset",
   "url": "http://www.doremilabs.com/products/cinema-products/cineasset/",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Creator NXT 2",
   "url": "https://www.wikidata.org/wiki/Q123202026",
   "reads": true,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "ExifTool",
   "url": "https://exiftool.org/",
   "reads": true,
   "writes": false,
   "license": "Artistic License / GNU General Public License, version 1.0 or later",
   "open_source": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "FakeTube",
   "url": "https://faketube.cz",
   "reads": true,
   "writes": false,
   "license": "end-user license agreement",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "HandBrake",
   "url": "https://handbrake.fr",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "HuMo-gen",
   "url": "https://humo-gen.com/wp/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 3.0",
   "open_source": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "IrfanView",
   "url": "https://www.irfanview.com/",
   "reads": true,
   "writes": false,
   "license": "freeware",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "MAXQDA",
   "url": "http://www.maxqda.com/",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Movavi Video Editor",
   "url": "https://www.movavi.com/videoeditor/",
   "reads": true,
   "writes": true,
   "license": "proprietary license",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "MoviePlus",
   "url": "http://www.serif.com/movieplus",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "MusicMaker MX",
   "url": "https://www.wikidata.org/wiki/Q113578339",
   "reads": true,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "NVivo",
   "url": "https://lumivero.com/products/nvivo/",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "PhotoModeler",
   "url": "http://www.photomodeler.com",
   "reads": true,
   "writes": false,
   "license": "proprietary license",
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Pinnacle Studio 17 Ultimate",
   "url": "https://www.wikidata.org/wiki/Q123246373",
   "reads": true,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Q117725",
   "url": "https://picard.musicbrainz.org",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "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,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "ScatterShow 1.1",
   "url": "https://www.wikidata.org/wiki/Q113626371",
   "reads": false,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "SpaceClaim",
   "url": "http://www.spaceclaim.com/",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "TMPGEnc",
   "url": "https://tmpgenc.pegasys-inc.com/en/product/tvmw6.html",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "Veblr",
   "url": "https://veblr.com",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "VideoStudio Pro X5",
   "url": "https://www.wikidata.org/wiki/Q110977928",
   "reads": true,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "VideoStudio X7",
   "url": "https://www.wikidata.org/wiki/Q113644652",
   "reads": true,
   "writes": true,
   "via": "windows-media-video-file-format-family"
  },
  {
   "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,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "WebPlus Essentials",
   "url": "https://www.wikidata.org/wiki/Q109625259",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  },
  {
   "name": "YouTube Space Rio",
   "url": "https://www.youtubespacerio.com",
   "reads": true,
   "writes": false,
   "via": "windows-media-video-file-format-family"
  }
 ],
 "projects": [
  {
   "name": "PRONOM fmt/133",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/133",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q27895063",
   "url": "https://www.wikidata.org/wiki/Q27895063",
   "kind": "wiki"
  },
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/WMV",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "aliases": [
  "WMV"
 ],
 "structure": [],
 "parsers": [],
 "conversions": [
  {
   "to": "flac-free-lossless-audio-codec-1-2-1",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.asf out.flac",
   "fidelity": "partial",
   "losses": "Audio track only: the video is dropped.",
   "url": "https://ffmpeg.org",
   "via": "windows-media-video-file-format-family"
  },
  {
   "to": "waveform-audio",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.asf out.wav",
   "fidelity": "partial",
   "losses": "Audio track only: the video is dropped.",
   "url": "https://ffmpeg.org",
   "via": "windows-media-video-file-format-family"
  },
  {
   "to": "mpeg-1-2-audio-layer-3",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.asf out.mp3",
   "fidelity": "lossy",
   "losses": "Lossy audio only: the video is dropped.",
   "url": "https://ffmpeg.org",
   "via": "windows-media-video-file-format-family"
  },
  {
   "to": "ogg",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.asf out.ogg",
   "fidelity": "lossy",
   "losses": "Lossy audio only: the video is dropped.",
   "url": "https://ffmpeg.org",
   "via": "windows-media-video-file-format-family"
  },
  {
   "to": "mpeg-4-part-14",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.asf out.mp4",
   "fidelity": "lossy",
   "losses": "Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.",
   "url": "https://ffmpeg.org",
   "via": "windows-media-video-file-format-family"
  },
  {
   "to": "matroska-1-4",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.asf out.mkv",
   "fidelity": "lossy",
   "losses": "Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.",
   "url": "https://ffmpeg.org",
   "via": "windows-media-video-file-format-family"
  },
  {
   "to": "webm",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.asf out.webm",
   "fidelity": "lossy",
   "losses": "Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.",
   "url": "https://ffmpeg.org",
   "via": "windows-media-video-file-format-family"
  }
 ],
 "samples": [],
 "claims": [],
 "verification": []
}