RTP Payload Format Restrictions
RFC 8851, “RTP Payload Format Restrictions”, is a Proposed Standard document published in January 2021 by A.B. Roach. It updates RFC 4855. The canonical text is published by the RFC Editor.
Abstract
In this specification, we define a framework for specifying restrictions on RTP streams in the Session Description Protocol (SDP). This framework defines a new "rid" ("restriction identifier") SDP attribute to unambiguously identify the RTP streams within an RTP session and restrict the streams' payload format parameters in a codec-agnostic way beyond what is provided with the regular payload types.
This specification updates RFC 4855 to give additional guidance on choice of Format Parameter (fmtp) names and their relation to the restrictions defined by this document.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 8851 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
- RFC 8850 Controlling Multiple Streams for Telepresence Protocol Data Channel
- RFC 8852 RTP Stream Identifier Source Description
- RFC 8849 Mapping RTP Streams to Controlling Multiple Streams for Telepresence Media Captures
- RFC 8853 Using Simulcast in Session Description Protocol and RTP Sessions
- RFC 8848 Session Signaling for Controlling Multiple Streams for Telepresence
- RFC 8854 WebRTC Forward Error Correction Requirements
- RFC 8847 Protocol for Controlling Multiple Streams for Telepresence
- RFC 8855 The Binary Floor Control Protocol