{
  "fileFormatID": 2644,
  "formatName": "JPEG 2000 Codestream",
  "version": null,
  "formatDescription": "JPEG 2000 codestream (also known as J2K, J2C, or JPEG 2000 Part 1, Core Coding System) is the wavelet based compressed image format defined in Part 1 of the JPEG 2000 standard. Both lossy and lossless compression as supported.\r\n\r\nA JPEG 2000 codestream uses a variant of the JPEG format, with a nearly identical system of markers and segments.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": null,
  "lastUpdatedDate": "15 Apr 2024",
  "formatProvenance": "04/2024 (v.118)- Format added to JPEG 2000 format family. Submitted by Preservica.",
  "formatSourceDate": "11 Nov 2022",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Image (Raster)",
  "formatFamilies": "JPEG 2000",
  "identifiers": [
    {
      "identifierText": "fmt/1794",
      "identifierType": "PUID"
    },
    {
      "identifierText": "image/jp2",
      "identifierType": "MIME"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 2134,
      "name": "JPEG 2000 Codestream",
      "note": "Based on the specification, start of codestream marker (0xFF4F) followed by image and tile size marker (0xFF51) at BOF, end of codestream marker (0xFFD9) at EOF.",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 0,
          "maxOffset": null,
          "byteSequence": "FF4FFF51",
          "endianness": null,
          "byteSequenceID": 2474
        },
        {
          "positionType": "Absolute from EOF",
          "offset": 0,
          "maxOffset": null,
          "byteSequence": "FFD9",
          "endianness": null,
          "byteSequenceID": 2475
        }
      ]
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "j2k",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "jpc",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "j2c",
      "signatureType": "File extension"
    }
  ],
  "relationships": [],
  "submittedBy": [
    244
  ]
}