{
 "id": "sony-openmg-audio",
 "name": "Sony OpenMG Audio",
 "category": "audio",
 "identifiers": {
  "extensions": [
   "oma"
  ],
  "mime": [
   "audio/atrac-advanced-lossless",
   "application/octet-stream"
  ],
  "puid": [
   "fmt/2018"
  ],
  "wikidata": [
   "Q105853831"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "656133",
    "notes": "Sony Open MG Audio"
   },
   {
    "offset": 8,
    "hex": "6f70656e4d47"
   },
   {
    "offset": 0,
    "hex": "454133"
   }
  ],
  "signatures": [
   {
    "name": "Sony Open MG Audio",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "656133{3069}454133"
     }
    ]
   },
   {
    "sequences": [
     {
      "position": "bof",
      "offset": 8,
      "pattern": "6f70656e4d47"
     }
    ]
   }
  ]
 },
 "status": "writable",
 "summary": "Sony OpenMG Audio files, often used for Minidisc players. The file, though originally designed for ATRAC3 (Adaptive Transform Acoustic Coding) audio files, can have different audio codecs such as MP3, ATRAC, ATRAC3, Linear PCM and WAV. These files can have DRM (digital rights management) protection, OpenMG refereing to the DRM system developed by Sony for managing and protecting digital music data on a personal computer. The OpenMG files have extensions of .omg and .oma.",
 "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": "EZ CD Audio Converter",
   "url": "https://www.poikosoft.com/",
   "reads": true,
   "writes": false
  },
  {
   "name": "OpenMG",
   "url": "https://www.wikidata.org/wiki/Q464649",
   "reads": true,
   "writes": true
  }
 ],
 "projects": [
  {
   "name": "PRONOM fmt/2018",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/2018",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q105853831",
   "url": "https://www.wikidata.org/wiki/Q105853831",
   "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.oma out.flac",
   "fidelity": "lossless",
   "losses": "Lossless for decoded audio; a lossy source stays as degraded as it was. WAV may reduce bit depth or drop metadata.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "waveform-audio",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.oma out.wav",
   "fidelity": "lossless",
   "losses": "Lossless for decoded audio; a lossy source stays as degraded as it was. WAV may reduce bit depth or drop metadata.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "mpeg-1-2-audio-layer-3",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.oma out.mp3",
   "fidelity": "lossy",
   "losses": "Lossy re-encoding.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "ogg",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.oma out.ogg",
   "fidelity": "lossy",
   "losses": "Lossy re-encoding.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "mpeg-4-part-14",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.oma 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.oma 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.oma 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": []
}