{
 "id": "macromedia-flv-1",
 "name": "Macromedia FLV",
 "category": "video",
 "identifiers": {
  "extensions": [
   "flv"
  ],
  "mime": [
   "video/x-flv"
  ],
  "puid": [
   "x-fmt/382"
  ],
  "wikidata": [
   "Q27967488"
  ],
  "loc_fdd": [
   "fdd000131"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "464c5601",
    "notes": "FLV 1"
   }
  ],
  "signatures": [
   {
    "name": "FLV 1",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "464c5601"
     }
    ]
   }
  ],
  "priority_over": [
   "fmt/134"
  ]
 },
 "status": "writable",
 "summary": "Flash Video, introduced in 2002, is a container format used to deliver digital video content over the internet through Macromedia Flash Player 6 and newer. It includes two primary formats: FLV (the original format) and F4V (introduced later, based on the ISO base media file format). Video streams were commonly encoded with Sorenson Spark (a proprietary variant of the H.263 standard), the first codec supported in Flash Player. Later versions also supported On2 VP6 and H.264. Developed by Macromedia (later acquired by Adobe in 2005), Flash Video became the de facto standard for web-based video streaming in the early 2000s.",
 "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": "Adobe Flash",
   "url": "http://www.adobe.com/products/flash/flashpro/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Any Video Converter",
   "url": "https://www.any-video-converter.com",
   "reads": false,
   "writes": true
  },
  {
   "name": "ENVI",
   "url": "https://www.nv5geospatialsoftware.com/Products/ENVI",
   "reads": true,
   "writes": true,
   "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": "EZ CD Audio Converter",
   "url": "https://www.poikosoft.com/",
   "reads": true,
   "writes": false
  },
  {
   "name": "FakeTube",
   "url": "https://faketube.cz",
   "reads": true,
   "writes": false,
   "license": "end-user license agreement"
  },
  {
   "name": "GStreamer",
   "url": "https://gstreamer.freedesktop.org/",
   "reads": true,
   "writes": false,
   "license": "GNU Library General Public License, version 2.0 or later",
   "open_source": true
  },
  {
   "name": "LiVES",
   "url": "http://lives-video.com/",
   "reads": true,
   "writes": false
  },
  {
   "name": "Movavi Video Editor",
   "url": "https://www.movavi.com/videoeditor/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "OpenPuff",
   "url": "https://embeddedsw.net/OpenPuff_Steganography_Home.html",
   "reads": true,
   "writes": false,
   "license": "GNU Lesser General Public License",
   "open_source": true
  },
  {
   "name": "OvenMediaEngine",
   "url": "https://airensoft.com/ome.html",
   "reads": true,
   "writes": false
  },
  {
   "name": "PhotoRec",
   "url": "http://www.cgsecurity.org/wiki/PhotoRec",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true
  },
  {
   "name": "Q207902",
   "url": "https://www.adobe.com/acrobat.html",
   "reads": true,
   "writes": true,
   "license": "proprietary license"
  },
  {
   "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": "SpaceClaim",
   "url": "http://www.spaceclaim.com/",
   "reads": true,
   "writes": false
  },
  {
   "name": "Veblr",
   "url": "https://veblr.com",
   "reads": true,
   "writes": false
  },
  {
   "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
  },
  {
   "name": "xine",
   "url": "https://xine.sourceforge.net/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true
  },
  {
   "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": "YouTube Space Rio",
   "url": "https://www.youtubespacerio.com",
   "reads": true,
   "writes": false
  }
 ],
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/FLV",
   "kind": "wiki"
  },
  {
   "name": "PRONOM x-fmt/382",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/x-fmt/382",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q27967488",
   "url": "https://www.wikidata.org/wiki/Q27967488",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "converters",
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "version": "1",
 "conversions": [
  {
   "to": "flac-free-lossless-audio-codec-1-2-1",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.flv 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.flv 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.flv out.mp3",
   "fidelity": "lossy",
   "losses": "Lossy audio only: the video is dropped.",
   "url": "https://ffmpeg.org"
  },
  {
   "to": "ogg",
   "tool": "FFmpeg",
   "command": "ffmpeg -i in.flv 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.flv 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.flv 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.flv 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": []
}