{
 "id": "atrac-codec-file-v-1",
 "name": "Atrac Codec File",
 "category": "audio",
 "identifiers": {
  "extensions": [
   "aea"
  ],
  "puid": [
   "fmt/1968"
  ],
  "wikidata": [
   "Q125936447"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "00080000",
    "notes": "Atrac Codec File v.1"
   }
  ],
  "signatures": [
   {
    "name": "Atrac Codec File v.1",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "00080000{260}(01|02)"
     },
     {
      "position": "eof",
      "offset": 0,
      "max_offset": 1024,
      "pattern": "ac"
     }
    ]
   }
  ]
 },
 "status": "readable",
 "summary": "ATRAC (Adaptive Transform Acoustic Coding) is a family of proprietary audio compression algorithms developed by Sony. It was first commercially used in the MiniDisc in 1992. ATRAC enabled the storage of audio information on quite small devices (for the time), with limited loss is perceptible quality.",
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/ATRAC1",
   "kind": "wiki"
  },
  {
   "name": "PRONOM fmt/1968",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/1968",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q125936447",
   "url": "https://www.wikidata.org/wiki/Q125936447",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "converters",
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "version": "v.1",
 "tools": [
  {
   "name": "FFmpeg",
   "url": "https://ffmpeg.org",
   "license": "LGPL-2.1-or-later / GPL-2.0-or-later",
   "open_source": true,
   "reads": true,
   "writes": false
  }
 ],
 "conversions": [
  {
   "to": "flac-free-lossless-audio-codec-1-2-1",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.aea 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.aea 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.aea out.mp3",
   "fidelity": "lossy",
   "losses": "Lossy re-encoding.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "ogg",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.aea out.ogg",
   "fidelity": "lossy",
   "losses": "Lossy re-encoding.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "mpeg-4-part-14",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.aea 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.aea 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.aea 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": []
}