{
 "id": "m4v",
 "name": "M4V",
 "category": "video",
 "identifiers": {
  "extensions": [
   "m4v"
  ],
  "mime": [
   "video/x-m4v"
  ],
  "wikidata": [
   "Q1056154"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "00000018667479706d703432"
   },
   {
    "offset": 0,
    "hex": "00000020667479704d345620"
   },
   {
    "offset": 4,
    "hex": "667479706d703432"
   }
  ]
 },
 "status": "writable",
 "summary": "file format",
 "tools": [
  {
   "name": "FFmpeg",
   "url": "https://ffmpeg.org",
   "license": "LGPL-2.1-or-later / GPL-2.0-or-later",
   "open_source": true,
   "reads": true,
   "writes": true
  },
  {
   "name": "ACDSee",
   "url": "https://www.acdsee.com",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Adobe Premiere Pro",
   "url": "http://adobe.com/products/premiere",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "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
  },
  {
   "name": "HandBrake",
   "url": "https://handbrake.fr",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true
  },
  {
   "name": "IrfanView",
   "url": "https://www.irfanview.com/",
   "reads": true,
   "writes": false,
   "license": "freeware"
  },
  {
   "name": "jPlayer",
   "url": "http://jplayer.org/",
   "reads": true,
   "writes": false,
   "license": "MIT License",
   "open_source": true
  },
  {
   "name": "MAXQDA",
   "url": "http://www.maxqda.com/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Microsoft Photos",
   "url": "https://www.wikidata.org/wiki/Q26328552",
   "reads": true,
   "writes": false,
   "license": "Microsoft end-user license agreement"
  },
  {
   "name": "Movavi Video Editor",
   "url": "https://www.movavi.com/videoeditor/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Xilisoft Video Converter 3",
   "url": "https://www.wikidata.org/wiki/Q122229367",
   "reads": true,
   "writes": false
  }
 ],
 "projects": [
  {
   "name": "Wikidata Q1056154",
   "url": "https://www.wikidata.org/wiki/Q1056154",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "converters",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "conversions": [
  {
   "to": "flac-free-lossless-audio-codec-1-2-1",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.m4v out.flac",
   "fidelity": "partial",
   "losses": "Audio track only: the video is dropped.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "waveform-audio",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.m4v out.wav",
   "fidelity": "partial",
   "losses": "Audio track only: the video is dropped.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "mpeg-1-2-audio-layer-3",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.m4v out.mp3",
   "fidelity": "lossy",
   "losses": "Lossy audio only: the video is dropped.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "ogg",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.m4v out.ogg",
   "fidelity": "lossy",
   "losses": "Lossy audio only: the video is dropped.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "mpeg-4-part-14",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.m4v 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"
  },
  {
   "to": "matroska-1-4",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.m4v 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"
  },
  {
   "to": "webm",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.m4v 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"
  }
 ],
 "aliases": [],
 "structure": [],
 "parsers": [],
 "samples": [],
 "claims": [],
 "verification": []
}