{
  "fileFormatID": 2651,
  "formatName": "Multimedia Viewer Book",
  "version": null,
  "formatDescription": "Multimedia Viewer Book is a format developed by Microsoft and used by programs such as Encarta to provide interactive, browsable multimedia. The format is very similar to the Microsoft Help .hlp format fmt/474, and a decompiler for the file format, helpdeco is available under a GNU license: https://github.com/pmachapman/helpdeco. The .hlp format this is based on was deprecated with Windows Vista.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": null,
  "lastUpdatedDate": "23 Nov 2022",
  "formatProvenance": null,
  "formatSourceDate": "23 Nov 2022",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Aggregate",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "fmt/1800",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 2139,
      "name": "Multimedia Viewer Book",
      "note": "BOF offset 0, 4 byte magic 0x3F5F0300, later SYSTEMHEADER 0x6C03, Format version WMVC/MMVC media view file: 0x1B00, Major version: 0x0100. Reference: http://delphi-kb.blogspot.com/2010/07/detailed-description-of-winhelp-file.html",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 0,
          "maxOffset": 0,
          "byteSequence": "3F5F0300*6C031B000100",
          "endianness": null,
          "byteSequenceID": 2481
        }
      ]
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "mvb",
      "signatureType": "File extension"
    }
  ],
  "relationships": [],
  "developedBy": [
    93
  ],
  "submittedBy": [
    244
  ]
}