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Merge pull request #13 from wilaw/wilaw-patch-1
Rename CARP to CMSF and update specifications
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draft-wilaw-moq-carp.md renamed to draft-wilaw-moq-cmsf.md

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---
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title: "CARP - a CMAF compliant implementation of WARP"
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title: "CMSF- a CMAF compliant implementation of MOQT Streaming Format"
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category: info
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docname: draft-wilaw-moq-carp-latest
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docname: draft-wilaw-moq-cmsf-latest
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submissiontype: IETF
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number:
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date:
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keyword:
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- moq
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- moqt
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- WARP
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- MSF
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- CMAF
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venue:
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group: "Media Over QUIC"
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type: "Working Group"
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arch: "https://mailarchive.ietf.org/arch/browse/moq/"
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github: "wilaw/carp"
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latest: "https://wilaw.github.io/carp/draft-wilaw-moq-carp.html"
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github: "wilaw/cmsf"
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latest: "https://wilaw.github.io/cmsf/draft-wilaw-moq-cmsf.html"
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author:
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normative:
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MoQTransport: I-D.draft-ietf-moq-transport-10
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WARP: I-D.draft-ietf-moq-warp
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MSF: I-D.draft-ietf-moq-warp
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CMAF:
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author:
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- name: International Organization for Standardization
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--- abstract
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This document updates [WARP] by defining a new optional feature for the streaming format.
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It specifies the syntax and semantics for adding CMAF-packaged media [CMAF] to WARP.
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This document updates [MSF] by defining a new optional feature for the streaming format.
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It specifies the syntax and semantics for adding CMAF-packaged media [CMAF] to MSF.
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# Introduction
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CARP Streaming Format (CARP) is a media format designed to deliver CMAF [CMAF] and
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LOC [LOC] compliant media content over MOQ Transport (MOQT) [MoQTransport]. CARP extends
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WARP and retains all the scope, capabilities and features of WARP including the catalog
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format, timeline, ABR switching and LOC support. CARP is targeted at real-time and
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CMAF compliant MOQT Streaming Format (CMSF) is a media format designed to deliver CMAF [CMAF] and
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LOC [LOC] compliant media content over MOQ Transport (MOQT) [MoQTransport]. CMSF extends
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MSF and retains all the scope, capabilities and features of MSF including the catalog
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format, timeline, ABR switching and LOC support. MSF is targeted at real-time and
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interactive levels of live latency, as well as VOD content.
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This document describes version 1 of the CARP streaming format.
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This document describes version 1 of the CMSF streaming format.
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# WARP Extension
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All of the specifications, requirements, and terminology defined in [WARP] apply to
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# MSF Extension
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All of the specifications, requirements, and terminology defined in [MSF] apply to
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implementations of this extension unless explicitly noted otherwise in this document.
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# CMAF Packaging
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## Catalog description
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### CMAF packaging type
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This specification extends the allowed packaging values defined in WARP Section 5.1.12
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This specification extends the allowed packaging values defined in [MSF]
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to include one new entry, as defined in Table 1 below:
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| Name | Value | Reference |
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|:==================|:================|:======================|
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| CMAF | cmaf | This RFC |
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Every Track entry in a CARP catalog carrying CMAF-packaged media data MUST declare a
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Every Track entry in a CMSF catalog carrying CMAF-packaged media data MUST declare a
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"packaging" type value of "cmaf".
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### Max SAP starting types
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## Event Timelines
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### SAP Type timeline {#saptypetimeline}
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CARP defines a special instance of an Event Timeline track, termed the SAP Type timeline
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CMSF defines a special instance of an Event Timeline track, termed the SAP Type timeline
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track. Its purpose is to convey information about the distribution of Stream Access Point
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types and their associated Earlist Presentation Times.
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In the catalog, the SAP-type timeline track MUST include a 'packaging' value of 'eventtimeline"
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and MUST include an 'eventType' value of 'org.ietf.moq.carp.sap'.
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and MUST include an 'eventType' value of 'org.ietf.moq.cmsf.sap'.
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In the SAP Type timeline JSON payload:
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