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  "docId": "SMPTE.RP158.1999",
  "document": {
    "abstract": "This practice specifies the video recording system, scanner parameters, and test conditions for 1/2-in type M-2 helical-scan video tape recorders operating with video signals having a typical scanning structure of 525 lines, 59.94 fields/s, 2:1 interlace, and utilizing the cassettes specified in ANSI/SMPTE 250M. The parameters described in this practice are for reference purposes only and should not be taken as the only method available to attain the specifications as defined in ANSI/SMPTE 249M.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "approvalDate": "1999",
    "approvalDate$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
      "holder$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.816Z"
      },
      "year": "1999",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.816Z"
      }
    },
    "copyright$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "docId": "SMPTE.RP158.1999",
    "docId$meta": {
      "confidence": "high",
      "note": "Calculated from parsed/inferred metadata",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "docLabel": "SMPTE RP 158:1999",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from parsed/inferred typenumber/number/date",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "docNumber": "158",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from HTML pubNumber meta tag",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "docTitle": "Basic System and Transport Geometry Parameters for 1/2-in Type M-2 Format",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Concatenated suite title and publication title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "docType": "Recommended Practice",
    "docType$meta": {
      "confidence": "high",
      "note": "Publication type parsed from HTML",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "doi": "10.5594/SMPTE.RP158.1999",
    "doi$meta": {
      "confidence": "medium",
      "note": "Constructed from parsed/inferred type/date",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "familyId": "158",
    "familyId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "group": "smpte-24tb-tc",
    "group$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "href": "https://doi.org/10.5594/SMPTE.RP158.1999",
    "href$meta": {
      "confidence": "high",
      "note": "URL generated and verified via redirect resolution",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "icsCodes": [
      {
        "code": "33.160.01",
        "description": "Audio, video and audiovisual systems in general"
      },
      {
        "code": "33.170",
        "description": "Television and radio broadcasting"
      }
    ],
    "icsCodes$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "isbn": "978-1-61482-174-8",
    "isbn$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "keywords": [
      "Communication",
      "Networking and Broadcast Technologies",
      "Recording",
      "Television"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "pages": "1–4",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "productNumber": "SSD001175",
    "productNumber$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "publicationDate": "1999-11-05",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from HTML pubDateTime meta tag",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "high",
      "note": "Parsed from HTML publisher meta tag",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "publisherLocation": {
      "city": "White Plains, NY",
      "city$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.816Z"
      },
      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.816Z"
      }
    },
    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "references": {
      "bibliographic": [
        "SMPTE.ST249.1996",
        "SMPTE.ST250.1996",
        "SMPTE.ST251.1996",
        "SMPTE.ST252.1996"
      ],
      "bibliographic$meta": {
        "confidence": "high",
        "note": "Extracted from sibling -ref.xml via extractSmpteSourceRefs.js",
        "source": "parsed",
        "updated": "2026-05-18T22:11:52.542Z"
      }
    },
    "releaseTag": "19991105-pub",
    "releaseTag$meta": {
      "confidence": "high",
      "note": "Release tag parsed from URL folder structure",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://pub.smpte.org/doc/rp158/19991105-pub/",
      "updated": "2025-10-12T05:19:44.150Z"
    },
    "resolvedHref": "https://pub.smpte.org/doc/rp158/19991105-pub/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": "https://my.smpte.org/s/product-details?id=a1BVR0000008kYE",
      "overridden": true,
      "source": "resolved",
      "updated": "2025-10-30T22:50:29.322Z",
      "version": "extractDocs.js@commit:ee2844fb1cf2"
    },
    "standardId": "20306",
    "standardId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08252015 STANDARDS REVISED DEPOSIT/smptes_rp-158-1999_1/rp0158-1999_stable2004.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.816Z"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s) and other status values",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-12T05:19:44.150Z"
      },
      "amended": false,
      "amended$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #amendments",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-12T05:19:44.150Z"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-12T05:19:44.150Z"
      },
      "stabilized": true,
      "stabilized$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #state",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-12T05:19:44.150Z"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-12T05:19:44.150Z"
      }
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}