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    "abstract": "This recommended practice is intended to specify the source images and make-up of leaders and use of sound synchronization cue marks and tones as part of a Digital Cinema Distribution Master (DCDM) as described in SMPTE 428-1 and/or as part of a Digital Cinema Package (DCP). ",
    "abstract$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2026-01-08T18:42:29.534Z"
    },
    "approvalDate": "2009-06-03",
    "approvalDate$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": "2009",
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        "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$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:08:45.039Z",
      "version": "smpte-zoho-standards@v1"
    },
    "docId": "SMPTE.RP428-6.2009",
    "docId$meta": {
      "confidence": "high",
      "note": "Calculated from parsed/inferred metadata",
      "originalValue": null,
      "source": "manual",
      "sourceUrl": "https://pub.smpte.org/doc/rp428-6/20090603-pub/",
      "updated": "2025-10-30T00:00:00Z"
    },
    "docLabel": "SMPTE RP 428-6:2009",
    "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": "6",
    "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": "2025-12-12T21:27:01.665Z",
      "version": "extractDocs.js@commit:e5213a0e988e"
    },
    "docTitle": "Digital Leader",
    "docTitle$meta": {
      "confidence": "high",
      "excludeChanges": true,
      "note": "Parsed from HTML pubTitle, or derived from wrapper title for PDF releases",
      "originalValue": "D-Cinema Distribution Master — D-Cinema Distribution Master —Digital Leader",
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      "source": "parsed",
      "updated": "2025-12-12T21:27:01.665Z",
      "version": "extractDocs.js@commit:e5213a0e988e"
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    "docType": "Recommended Practice",
    "docType$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "doi": "10.5594/SMPTE.RP428-6.2009",
    "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.RP428-6.2009",
    "href$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "icsCodes": [
      {
        "code": "37.060.99",
        "description": "Other standards related to cinematography"
      },
      {
        "code": "19.080",
        "description": "Electrical and electronic testing"
      }
    ],
    "icsCodes$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": "978-1-61482-242-4",
    "isbn$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:04:58.507Z",
      "version": "smpte-zoho-standards@v1"
    },
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      "DCDM",
      "Distribution",
      "Test & Measurement",
      "Leader"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json); registry value merged with Zoho's set (union deduped)",
      "originalValue": [
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        "DCDM",
        "Distribution"
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      "source": "parsed",
      "updated": "2026-06-17T16:55:09.355Z",
      "version": "smpte-zoho-standards@v1"
    },
    "numberOfPages": "23",
    "numberOfPages$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:12:21.844Z",
      "version": "smpte-zoho-standards@v1"
    },
    "productNumber": "SSD001243",
    "productNumber$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": "2009-06-03",
    "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": {
      "bibliographic": [
        "SMPTE.PH22-55.1966",
        "SMPTE.ST55.2000",
        "SMPTE.ST428-2.2006",
        "SMPTE.RP25.1995",
        "SMPTE.RP431-2.2007"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "normative": [
        "SMPTE.ST428-1.2006",
        "SMPTE.ST428-3.2006",
        "SMPTE.RP155.2004"
      ],
      "normative$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      }
    },
    "releaseTag": "20090603-pub",
    "releaseTag$meta": {
      "confidence": "high",
      "note": "Release tag parsed from URL folder structure",
      "originalValue": null,
      "source": "parsed",
      "updated": "2025-10-21T04:41:04.991Z"
    },
    "resolvedHref": "https://pub.smpte.org/doc/rp428-6/20090603-pub/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": "https://my.smpte.org/s/product-details?id=a1BVR0000007Nbo",
      "overridden": true,
      "source": "resolved",
      "updated": "2025-10-30T22:52:45.655Z",
      "version": "extractDocs.js@commit:ee2844fb1cf2"
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    "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": "2025-10-21T04:41:04.991Z"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-21T04:41:04.991Z"
      },
      "reaffirmDate": "2018-03-15",
      "reaffirmDate$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "reaffirmed": true,
      "reaffirmed$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "stabilized": true,
      "stabilized$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #state",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-21T04:41:04.991Z"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-21T04:41:04.991Z"
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