{
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  "docId": "RFC3551",
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    "abstract": "This document describes a profile called \"RTP/AVP\" for the use of the real-time transport protocol (RTP), version 2, and the associated control protocol, RTCP, within audio and video multiparticipant conferences with minimal control. It provides interpretations of generic fields within the RTP specification suitable for audio and video conferences. In particular, this document defines a set of default mappings from payload type numbers to encodings. This document also describes how audio and video data may be carried within RTP. It defines a set of standard encodings and their names when used within RTP. The descriptions provide pointers to reference implementations and the detailed standards. This document is meant as an aid for implementors of audio, video and other real-time multimedia applications. This memorandum obsoletes RFC 1890. It is mostly backwards-compatible except for functions removed because two interoperable implementations were not found. The additions to RFC 1890 codify existing practice in the use of payload formats under this profile and include new payload formats defined since RFC 1890 was published. [STANDARDS-TRACK]",
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      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
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    "authors": [
      {
        "name": "Henning Schulzrinne"
      },
      {
        "name": "Stephen L. Casner"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
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    "docId": "RFC3551",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
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    "docLabel": "IETF RFC 3551",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docNumber": "3551",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docTitle": "RTP Profile for Audio and Video Conferences with Minimal Control",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "doi": "10.17487/RFC3551",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "href": "https://doi.org/10.17487/RFC3551",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "keywords": [
      "RTP-AV",
      "RTP",
      "Audio",
      "Video",
      "Networks",
      "Conference"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "pages": "44",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "publicationDate": "2003-07-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "references": {
      "bibliographic": [
        "RFC1633",
        "RFC2475",
        "RFC2327",
        "RFC3555",
        "RFC2048",
        "RFC3389",
        "RFC2250",
        "RFC2658",
        "RFC2198",
        "RFC2029",
        "RFC2435",
        "RFC2032",
        "RFC2190",
        "RFC2429",
        "RFC2326",
        "RFC3376",
        "orphan/RFC3551/h:74b6cced",
        "orphan/RFC3551/h:673577b7",
        "orphan/RFC3551/h:a448c6aa",
        "orphan/RFC3551/h:e2eee988",
        "orphan/RFC3551/h:0cea36b2"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=24 proseBlocks=30 skippedAnchorBlocks=26",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "normative": [
        "RFC3550",
        "RFC2119",
        "orphan/RFC3551/h:09abb478"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc3551/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
      "updated": "2026-10-12T20:13:37.444Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "amendedBy": [
        "RFC5761",
        "RFC7007",
        "RFC8860"
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      "amendedBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "statusNote": "Internet Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
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      "supersedes": [
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      "supersedes$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3551/",
        "updated": "2026-10-12T20:13:37.444Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
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