[rfc-dist] RFC 8853 on Using Simulcast in Session Description Protocol (SDP) and RTP Sessions
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Subject: [rfc-dist] RFC 8853 on Using Simulcast in Session Description Protocol (SDP) and RTP Sessions
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A new Request for Comments is now available in online RFC libraries. RFC 8853 Title: Using Simulcast in Session Description Protocol (SDP) and RTP Sessions Author: B. Burman, M. Westerlund, S. Nandakumar, M. Zanaty Status: Standards Track Stream: IETF Date: January 2021 Mailbox: bo.burman@ericsson.com, magnus.westerlund@ericsson.com, snandaku@cisco.com, mzanaty@cisco.com Pages: 30 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-mmusic-sdp-simulcast-14.txt URL: https://www.rfc-editor.org/info/rfc8853 DOI: 10.17487/RFC8853 In some application scenarios, it may be desirable to send multiple differently encoded versions of the same media source in different RTP streams. This is called simulcast. This document describes how to accomplish simulcast in RTP and how to signal it in the Session Description Protocol (SDP). The described solution uses an RTP/RTCP identification method to identify RTP streams belonging to the same media source and makes an extension to SDP to indicate that those RTP streams are different simulcast formats of that media source. The SDP extension consists of a new media-level SDP attribute that expresses capability to send and/or receive simulcast RTP streams. This document is a product of the Multiparty Multimedia Session Control Working Group of the IETF. This is now a Proposed Standard. STANDARDS TRACK: This document specifies an Internet Standards Track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the Official Internet Protocol Standards (https://www.rfc-editor.org/standards) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC _______________________________________________ rfc-dist mailing list rfc-dist@rfc-editor.org https://www.rfc-editor.org/mailman/listinfo/rfc-dist http://www.rfc-editor.org