{
 "id": "nut-open-container-format",
 "name": "NUT Open Container Format",
 "category": "other",
 "identifiers": {
  "extensions": [
   "nut"
  ],
  "mime": [
   "application/x-nut"
  ],
  "puid": [
   "fmt/816"
  ],
  "wikidata": [
   "Q3334595"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "6e75742f6d756c74696d6564696120636f6e7461696e6572",
    "notes": "NUT"
   },
   {
    "offset": 0,
    "hex": "6e75742f6d756c74696d6564696120636f6e7461696e657200"
   }
  ],
  "signatures": [
   {
    "name": "NUT",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "6e75742f6d756c74696d6564696120636f6e7461696e6572"
     }
    ]
   }
  ]
 },
 "status": "writable",
 "summary": "NUT is a container format for the storage of audio, video, subtitles and other related user defined streams. It provides an exact timestamp for synchronization and seeking.",
 "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": "MPlayer",
   "url": "https://mplayerhq.hu/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0 or later",
   "open_source": true
  },
  {
   "name": "Q2596578",
   "url": "https://www.smplayer.info/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true
  },
  {
   "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": "Xilisoft Video Converter 3",
   "url": "https://www.wikidata.org/wiki/Q122229367",
   "reads": true,
   "writes": false
  },
  {
   "name": "xine",
   "url": "https://xine.sourceforge.net/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true
  }
 ],
 "projects": [
  {
   "name": "PRONOM fmt/816",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/816",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q3334595",
   "url": "https://www.wikidata.org/wiki/Q3334595",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "converters",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "conversions": [
  {
   "to": "flac-free-lossless-audio-codec-1-2-1",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.nut 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.nut 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.nut out.mp3",
   "fidelity": "lossy",
   "losses": "Lossy re-encoding.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "ogg",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.nut out.ogg",
   "fidelity": "lossy",
   "losses": "Lossy re-encoding.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "mpeg-4-part-14",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.nut 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.nut 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.nut 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": []
}