rfc8851v3.txt		rfc8851.txt
	Internet Engineering Task Force (IETF) A.B. Roach, Ed.		Internet Engineering Task Force (IETF) A.B. Roach, Ed.
	Request for Comments: 8851 Mozilla		Request for Comments: 8851 Mozilla
	Updates: 4855 May 2020		Updates: 4855 January 2021
	Category: Standards Track		Category: Standards Track
	ISSN: 2070-1721		ISSN: 2070-1721
	RTP Payload Format Restrictions		RTP Payload Format Restrictions
	Abstract		Abstract
	In this specification, we define a framework for specifying		In this specification, we define a framework for specifying
	restrictions on RTP streams in the Session Description Protocol		restrictions on RTP streams in the Session Description Protocol
	(SDP). This framework defines a new "rid" ("restriction identifier")		(SDP). This framework defines a new "rid" ("restriction identifier")
	skipping to change at line 40 ¶		skipping to change at line 40 ¶
	received public review and has been approved for publication by the		received public review and has been approved for publication by the
	Internet Engineering Steering Group (IESG). Further information on		Internet Engineering Steering Group (IESG). Further information on
	Internet Standards is available in Section 2 of RFC 7841.		Internet Standards is available in Section 2 of RFC 7841.
	Information about the current status of this document, any errata,		Information about the current status of this document, any errata,
	and how to provide feedback on it may be obtained at		and how to provide feedback on it may be obtained at
	https://www.rfc-editor.org/info/rfc8851.		https://www.rfc-editor.org/info/rfc8851.
	Copyright Notice		Copyright Notice
	Copyright (c) 2020 IETF Trust and the persons identified as the		Copyright (c) 2021 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	carefully, as they describe your rights and restrictions with respect		carefully, as they describe your rights and restrictions with respect
	to this document. Code Components extracted from this document must		to this document. Code Components extracted from this document must
	include Simplified BSD License text as described in Section 4.e of		include Simplified BSD License text as described in Section 4.e of
	the Trust Legal Provisions and are provided without warranty as		the Trust Legal Provisions and are provided without warranty as
	skipping to change at line 1098 ¶		skipping to change at line 1098 ¶
	* an explanation of the purpose of the restriction		* an explanation of the purpose of the restriction
	* a specification of appropriate attribute values for this		* a specification of appropriate attribute values for this
	restriction		restriction
	* an ABNF definition of the restriction		* an ABNF definition of the restriction
	The initial set of "a=rid" restriction names, with definitions in		The initial set of "a=rid" restriction names, with definitions in
	Section 5 of this document, is given below:		Section 5 of this document, is given below:
	+--------------------+-----------+		+====================+===========+
	| RID Parameter Name | Reference |		| RID Parameter Name | Reference |
	+====================+===========+		+====================+===========+
	| pt | RFC 8851 |		| pt | RFC 8851 |
	+--------------------+-----------+		+--------------------+-----------+
	| max-width | RFC 8851 |		| max-width | RFC 8851 |
	+--------------------+-----------+		+--------------------+-----------+
	| max-height | RFC 8851 |		| max-height | RFC 8851 |
	+--------------------+-----------+		+--------------------+-----------+
	| max-fps | RFC 8851 |		| max-fps | RFC 8851 |
	+--------------------+-----------+		+--------------------+-----------+
	skipping to change at line 1186 ¶		skipping to change at line 1186 ¶
	[RFC7405] Kyzivat, P., "Case-Sensitive String Support in ABNF",		[RFC7405] Kyzivat, P., "Case-Sensitive String Support in ABNF",
	RFC 7405, DOI 10.17487/RFC7405, December 2014,		RFC 7405, DOI 10.17487/RFC7405, December 2014,
	<https://www.rfc-editor.org/info/rfc7405>.		<https://www.rfc-editor.org/info/rfc7405>.
	[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC		[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
	2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,		2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
	May 2017, <https://www.rfc-editor.org/info/rfc8174>.		May 2017, <https://www.rfc-editor.org/info/rfc8174>.
	[RFC8852] Roach, A.B., Nandakumar, S., and P. Thatcher, "RTP Stream		[RFC8852] Roach, A.B., Nandakumar, S., and P. Thatcher, "RTP Stream
	Identifier Source Description (SDES)",		Identifier Source Description (SDES)", RFC 8852,
	DOI 10.17487/RFC8852, RFC 8852, May 2020,		DOI 10.17487/RFC8852, January 2021,
	<https://www.rfc-editor.org/info/rfc8852>.		<https://www.rfc-editor.org/info/rfc8852>.
	14.2. Informative References		14.2. Informative References
	[H264] International Telecommunication Union, "Advanced video		[H264] International Telecommunication Union, "Advanced video
	coding for generic audiovisual services", ITU-T		coding for generic audiovisual services", ITU-T
	Recommendation H.264, June 2019,		Recommendation H.264, June 2019,
	<https://www.itu.int/rec/T-REC-H.264>.		<https://www.itu.int/rec/T-REC-H.264>.
	[RFC2198] Perkins, C., Kouvelas, I., Hodson, O., Hardman, V.,		[RFC2198] Perkins, C., Kouvelas, I., Hodson, O., Hardman, V.,
	skipping to change at line 1250 ¶		skipping to change at line 1250 ¶
	DOI 10.17487/RFC8285, October 2017,		DOI 10.17487/RFC8285, October 2017,
	<https://www.rfc-editor.org/info/rfc8285>.		<https://www.rfc-editor.org/info/rfc8285>.
	[RFC8627] Zanaty, M., Singh, V., Begen, A., and G. Mandyam, "RTP		[RFC8627] Zanaty, M., Singh, V., Begen, A., and G. Mandyam, "RTP
	Payload Format for Flexible Forward Error Correction		Payload Format for Flexible Forward Error Correction
	(FEC)", RFC 8627, DOI 10.17487/RFC8627, July 2019,		(FEC)", RFC 8627, DOI 10.17487/RFC8627, July 2019,
	<https://www.rfc-editor.org/info/rfc8627>.		<https://www.rfc-editor.org/info/rfc8627>.
	[RFC8843] Holmberg, C., Alvestrand, H., and C. Jennings,		[RFC8843] Holmberg, C., Alvestrand, H., and C. Jennings,
	"Negotiating Media Multiplexing Using the Session		"Negotiating Media Multiplexing Using the Session
	Description Protocol (SDP)", DOI 10.17487/RFC8843,		Description Protocol (SDP)", RFC 8843,
	RFC 8843, May 2020,		DOI 10.17487/RFC8843, January 2021,
	<https://www.rfc-editor.org/info/rfc8843>.		<https://www.rfc-editor.org/info/rfc8843>.
	[RFC8853] Burman, B., Westerlund, M., Nandakumar, S., and M. Zanaty,		[RFC8853] Burman, B., Westerlund, M., Nandakumar, S., and M. Zanaty,
	"Using Simulcast in SDP and RTP Sessions",		"Using Simulcast in Session Description Protocol (SDP) and
	DOI 10.17487/RFC8853, RFC 8853, May 2020,		RTP Sessions", RFC 8853, DOI 10.17487/RFC8853, January
	<https://www.rfc-editor.org/info/rfc8853>.		2021, <https://www.rfc-editor.org/info/rfc8853>.
	Acknowledgements		Acknowledgements
	Many thanks to Cullen Jennings, Magnus Westerlund, and Paul Kyzivat		Many thanks to Cullen Jennings, Magnus Westerlund, and Paul Kyzivat
	for reviewing. Thanks to Colin Perkins for input on future payload		for reviewing. Thanks to Colin Perkins for input on future payload
	type handling.		type handling.
	Contributors		Contributors
	The following individuals have contributed significant text to this		The following individuals have contributed significant text to this
End of changes. 6 change blocks.
	10 lines changed or deleted		10 lines changed or added
This html diff was produced by rfcdiff 1.48. The latest version is available from http://tools.ietf.org/tools/rfcdiff/