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    "abstract": "This document specifies constraints on the technical parameters, file structure, file naming and other relevant information pertaining to audio essence delivered from final post-production as a Digital Cinema Distribution Master.",
    "abstract$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2026-01-08T18:42:29.534Z"
    },
    "approvalDate": "2010-03-31",
    "approvalDate$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:27:42.872Z",
      "version": "smpte-zoho-standards@v1"
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    "copyright": {
      "year": "2010",
      "year$meta": {
        "confidence": "high",
        "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
        "source": "parsed",
        "updated": "2026-06-15T20:08:45.039Z",
        "version": "smpte-zoho-standards@v1"
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    "copyright$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:08:45.039Z",
      "version": "smpte-zoho-standards@v1"
    },
    "docId": "SMPTE.RP428-4.2010",
    "docId$meta": {
      "confidence": "high",
      "note": "Calculated from parsed/inferred metadata",
      "originalValue": null,
      "source": "manual",
      "sourceUrl": "https://pub.smpte.org/doc/rp428-4/20100331-pub/",
      "updated": "2025-10-30T00:00:00Z"
    },
    "docLabel": "SMPTE RP 428-4:2010",
    "docLabel$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docNumber": "428",
    "docNumber$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docPart": "4",
    "docPart$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docSuiteTitle": "D-Cinema Distribution Master",
    "docSuiteTitle$meta": {
      "confidence": "high",
      "note": "Parsed from HTML pubSuiteTitle meta tag, or derived from wrapper title for PDF releases",
      "originalValue": null,
      "source": "parsed",
      "updated": "2025-12-12T21:27:00.118Z",
      "version": "extractDocs.js@commit:e5213a0e988e"
    },
    "docTitle": "Audio File Format and Delivery Constraints",
    "docTitle$meta": {
      "confidence": "high",
      "excludeChanges": true,
      "note": "Parsed from HTML pubTitle, or derived from wrapper title for PDF releases",
      "originalValue": "D-Cinema Distribution Master — D-Cinema Distribution Master —Audio File Format and Delivery Constraints",
      "overridden": true,
      "source": "parsed",
      "updated": "2025-12-12T21:27:00.118Z",
      "version": "extractDocs.js@commit:e5213a0e988e"
    },
    "docType": "Recommended Practice",
    "docType$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "doi": "10.5594/SMPTE.RP428-4.2010",
    "doi$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "group": "smpte-27c-tc",
    "group$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "href": "https://doi.org/10.5594/SMPTE.RP428-4.2010",
    "href$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "icsCodes": [
      {
        "code": "37.060.99",
        "description": "Other standards related to cinematography"
      }
    ],
    "icsCodes$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:44:42.037Z",
      "version": "smpte-zoho-standards@v1"
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    "isbn": "978-1-61482-240-0",
    "isbn$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:04:58.507Z",
      "version": "smpte-zoho-standards@v1"
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      "DCDM",
      "Distribution",
      "Sound",
      "File Formats",
      "Audio"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Scrubbed against src/main/config/site.json controlledKeywords (auto-fix renames + drop noise)",
      "originalValue": [
        "DCinema",
        "DCDM",
        "Distribution",
        "Sound"
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      "source": "parsed",
      "updated": "2026-06-17T17:18:30.093Z",
      "version": "kw-scrub@v1"
    },
    "numberOfPages": "14",
    "numberOfPages$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:12:21.844Z",
      "version": "smpte-zoho-standards@v1"
    },
    "productNumber": "SSD001241",
    "productNumber$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:11:00.505Z",
      "version": "smpte-zoho-standards@v1"
    },
    "publicationDate": "2010-03-31",
    "publicationDate$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "references": {
      "normative": [
        "SMPTE.ST428-2.2006",
        "SMPTE.ST428-3.2006",
        "SMPTE.ST429-2.2009",
        "SMPTE.ST429-7.2006",
        "R-REC-BR.1352-1.2002",
        "ISO.639-2.1998"
      ],
      "normative$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      }
    },
    "releaseTag": "20100331-pub",
    "releaseTag$meta": {
      "confidence": "high",
      "note": "Release tag parsed from URL folder structure",
      "originalValue": null,
      "source": "parsed",
      "updated": "2025-10-21T04:41:03.999Z"
    },
    "repo": "https://github.com/SMPTE/rp428-4/",
    "repo$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "resolvedHref": "https://pub.smpte.org/doc/rp428-4/20100331-pub/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": "https://my.smpte.org/s/product-details?id=a1BVR0000008kZ7",
      "overridden": true,
      "source": "resolved",
      "updated": "2025-10-30T22:52:45.235Z",
      "version": "extractDocs.js@commit:ee2844fb1cf2"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "amended": false,
      "amended$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #amendments",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-21T04:41:03.999Z"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-21T04:41:03.999Z"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-21T04:41:03.999Z"
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}