| draft-ietf-mmusic-sdp-simulcast-00.txt | draft-ietf-mmusic-sdp-simulcast-01.txt | |||
|---|---|---|---|---|
| Network Working Group B. Burman | Network Working Group B. Burman | |||
| Internet-Draft M. Westerlund | Internet-Draft M. Westerlund | |||
| Intended status: Standards Track Ericsson | Intended status: Standards Track Ericsson | |||
| Expires: July 24, 2015 S. Nandakumar | Expires: January 22, 2016 S. Nandakumar | |||
| M. Zanaty | M. Zanaty | |||
| Cisco | Cisco | |||
| January 20, 2015 | July 21, 2015 | |||
| Using Simulcast in SDP and RTP Sessions | Using Simulcast in SDP and RTP Sessions | |||
| draft-ietf-mmusic-sdp-simulcast-00 | draft-ietf-mmusic-sdp-simulcast-01 | |||
| Abstract | Abstract | |||
| In some application scenarios it may be desirable to send multiple | In some application scenarios it may be desirable to send multiple | |||
| differently encoded versions of the same media source in independent | differently encoded versions of the same media source in independent | |||
| RTP streams. This is called simulcast. This document discusses the | RTP streams. This is called simulcast. This document discusses the | |||
| best way of accomplishing simulcast in RTP and how to signal it in | best way of accomplishing simulcast in RTP and how to signal it in | |||
| SDP. A solution is defined by making an extension to SDP, and using | SDP. A solution is defined by making an extension to SDP, and using | |||
| RTP/RTCP identification methods to relate RTP streams belonging to | RTP/RTCP identification methods to relate RTP streams belonging to | |||
| the same media source. The SDP extension consists a new media level | the same media source. The SDP extension consists a new media level | |||
| skipping to change at page 1, line 43 | skipping to change at page 1, line 43 | |||
| Internet-Drafts are working documents of the Internet Engineering | Internet-Drafts are working documents of the Internet Engineering | |||
| Task Force (IETF). Note that other groups may also distribute | Task Force (IETF). Note that other groups may also distribute | |||
| working documents as Internet-Drafts. The list of current Internet- | working documents as Internet-Drafts. The list of current Internet- | |||
| Drafts is at http://datatracker.ietf.org/drafts/current/. | Drafts is at http://datatracker.ietf.org/drafts/current/. | |||
| Internet-Drafts are draft documents valid for a maximum of six months | Internet-Drafts are draft documents valid for a maximum of six months | |||
| and may be updated, replaced, or obsoleted by other documents at any | and may be updated, replaced, or obsoleted by other documents at any | |||
| time. It is inappropriate to use Internet-Drafts as reference | time. It is inappropriate to use Internet-Drafts as reference | |||
| material or to cite them other than as "work in progress." | material or to cite them other than as "work in progress." | |||
| This Internet-Draft will expire on July 24, 2015. | This Internet-Draft will expire on January 22, 2016. | |||
| Copyright Notice | Copyright Notice | |||
| Copyright (c) 2015 IETF Trust and the persons identified as the | Copyright (c) 2015 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 | |||
| (http://trustee.ietf.org/license-info) in effect on the date of | (http://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 | |||
| skipping to change at page 18, line 45 | skipping to change at page 18, line 45 | |||
| document. Robert Hansen, from Cisco, contributed significantly to | document. Robert Hansen, from Cisco, contributed significantly to | |||
| subsequent versions. | subsequent versions. | |||
| 11. Acknowledgements | 11. Acknowledgements | |||
| 12. References | 12. References | |||
| 12.1. Normative References | 12.1. Normative References | |||
| [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate | [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate | |||
| Requirement Levels", BCP 14, RFC 2119, March 1997. | Requirement Levels", BCP 14, RFC 2119, | |||
| DOI 10.17487/RFC2119, March 1997, | ||||
| <http://www.rfc-editor.org/info/rfc2119>. | ||||
| [RFC3550] Schulzrinne, H., Casner, S., Frederick, R., and V. | [RFC3550] Schulzrinne, H., Casner, S., Frederick, R., and V. | |||
| Jacobson, "RTP: A Transport Protocol for Real-Time | Jacobson, "RTP: A Transport Protocol for Real-Time | |||
| Applications", STD 64, RFC 3550, July 2003. | Applications", STD 64, RFC 3550, DOI 10.17487/RFC3550, | |||
| July 2003, <http://www.rfc-editor.org/info/rfc3550>. | ||||
| [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session | [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session | |||
| Description Protocol", RFC 4566, July 2006. | Description Protocol", RFC 4566, DOI 10.17487/RFC4566, | |||
| July 2006, <http://www.rfc-editor.org/info/rfc4566>. | ||||
| [RFC5109] Li, A., "RTP Payload Format for Generic Forward Error | [RFC5109] Li, A., Ed., "RTP Payload Format for Generic Forward Error | |||
| Correction", RFC 5109, December 2007. | Correction", RFC 5109, DOI 10.17487/RFC5109, December | |||
| 2007, <http://www.rfc-editor.org/info/rfc5109>. | ||||
| [RFC5234] Crocker, D. and P. Overell, "Augmented BNF for Syntax | [RFC5234] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax | |||
| Specifications: ABNF", STD 68, RFC 5234, January 2008. | Specifications: ABNF", STD 68, RFC 5234, | |||
| DOI 10.17487/RFC5234, January 2008, | ||||
| <http://www.rfc-editor.org/info/rfc5234>. | ||||
| [RFC7104] Begen, A., Cai, Y., and H. Ou, "Duplication Grouping | [RFC7104] Begen, A., Cai, Y., and H. Ou, "Duplication Grouping | |||
| Semantics in the Session Description Protocol", RFC 7104, | Semantics in the Session Description Protocol", RFC 7104, | |||
| January 2014. | DOI 10.17487/RFC7104, January 2014, | |||
| <http://www.rfc-editor.org/info/rfc7104>. | ||||
| 12.2. Informative References | 12.2. Informative References | |||
| [I-D.ietf-avtcore-multiplex-guidelines] | [I-D.ietf-avtcore-multiplex-guidelines] | |||
| Westerlund, M., Perkins, C., and H. Alvestrand, | Westerlund, M., Perkins, C., and H. Alvestrand, | |||
| "Guidelines for using the Multiplexing Features of RTP to | "Guidelines for using the Multiplexing Features of RTP to | |||
| Support Multiple Media Streams", draft-ietf-avtcore- | Support Multiple Media Streams", draft-ietf-avtcore- | |||
| multiplex-guidelines-03 (work in progress), October 2014. | multiplex-guidelines-03 (work in progress), October 2014. | |||
| [I-D.ietf-avtcore-rtp-multi-stream] | [I-D.ietf-avtcore-rtp-multi-stream] | |||
| Lennox, J., Westerlund, M., Wu, W., and C. Perkins, | Lennox, J., Westerlund, M., Wu, W., and C. Perkins, | |||
| "Sending Multiple Media Streams in a Single RTP Session", | "Sending Multiple Media Streams in a Single RTP Session", | |||
| draft-ietf-avtcore-rtp-multi-stream-06 (work in progress), | draft-ietf-avtcore-rtp-multi-stream-08 (work in progress), | |||
| October 2014. | July 2015. | |||
| [I-D.ietf-avtcore-rtp-topologies-update] | [I-D.ietf-avtcore-rtp-topologies-update] | |||
| Westerlund, M. and S. Wenger, "RTP Topologies", draft- | Westerlund, M. and S. Wenger, "RTP Topologies", draft- | |||
| ietf-avtcore-rtp-topologies-update-05 (work in progress), | ietf-avtcore-rtp-topologies-update-10 (work in progress), | |||
| November 2014. | July 2015. | |||
| [I-D.ietf-avtext-rtp-grouping-taxonomy] | [I-D.ietf-avtext-rtp-grouping-taxonomy] | |||
| Lennox, J., Gross, K., Nandakumar, S., and G. Salgueiro, | Lennox, J., Gross, K., Nandakumar, S., Salgueiro, G., and | |||
| "A Taxonomy of Grouping Semantics and Mechanisms for Real- | B. Burman, "A Taxonomy of Semantics and Mechanisms for | |||
| Time Transport Protocol (RTP) Sources", draft-ietf-avtext- | Real-Time Transport Protocol (RTP) Sources", draft-ietf- | |||
| rtp-grouping-taxonomy-04 (work in progress), January 2015. | avtext-rtp-grouping-taxonomy-08 (work in progress), July | |||
| 2015. | ||||
| [I-D.ietf-avtext-rtp-stream-pause] | [I-D.ietf-avtext-rtp-stream-pause] | |||
| Akram, A., Even, R., and M. Westerlund, "RTP Stream Pause | Burman, B., Akram, A., Even, R., and M. Westerlund, "RTP | |||
| and Resume", draft-ietf-avtext-rtp-stream-pause-05 (work | Stream Pause and Resume", draft-ietf-avtext-rtp-stream- | |||
| in progress), October 2014. | pause-08 (work in progress), July 2015. | |||
| [I-D.ietf-mmusic-sdp-bundle-negotiation] | [I-D.ietf-mmusic-sdp-bundle-negotiation] | |||
| Holmberg, C., Alvestrand, H., and C. Jennings, | Holmberg, C., Alvestrand, H., and C. Jennings, | |||
| "Negotiating Media Multiplexing Using the Session | "Negotiating Media Multiplexing Using the Session | |||
| Description Protocol (SDP)", draft-ietf-mmusic-sdp-bundle- | Description Protocol (SDP)", draft-ietf-mmusic-sdp-bundle- | |||
| negotiation-15 (work in progress), January 2015. | negotiation-23 (work in progress), July 2015. | |||
| [I-D.ietf-payload-vp8] | [I-D.ietf-payload-vp8] | |||
| Westin, P., Lundin, H., Glover, M., Uberti, J., and F. | Westin, P., Lundin, H., Glover, M., Uberti, J., and F. | |||
| Galligan, "RTP Payload Format for VP8 Video", draft-ietf- | Galligan, "RTP Payload Format for VP8 Video", draft-ietf- | |||
| payload-vp8-13 (work in progress), October 2014. | payload-vp8-16 (work in progress), June 2015. | |||
| [I-D.roach-mmusic-unified-plan] | [I-D.roach-mmusic-unified-plan] | |||
| Roach, A., Uberti, J., and M. Thomson, "A Unified Plan for | Roach, A., Uberti, J., and M. Thomson, "A Unified Plan for | |||
| Using SDP with Large Numbers of Media Flows", draft-roach- | Using SDP with Large Numbers of Media Flows", draft-roach- | |||
| mmusic-unified-plan-00 (work in progress), July 2013. | mmusic-unified-plan-00 (work in progress), July 2013. | |||
| [I-D.westerlund-avtcore-transport-multiplexing] | [I-D.westerlund-avtcore-transport-multiplexing] | |||
| Westerlund, M. and C. Perkins, "Multiplexing Multiple RTP | Westerlund, M. and C. Perkins, "Multiplexing Multiple RTP | |||
| Sessions onto a Single Lower-Layer Transport", draft- | Sessions onto a Single Lower-Layer Transport", draft- | |||
| westerlund-avtcore-transport-multiplexing-07 (work in | westerlund-avtcore-transport-multiplexing-07 (work in | |||
| progress), October 2013. | progress), October 2013. | |||
| [RFC2198] Perkins, C., Kouvelas, I., Hodson, O., Hardman, V., | [RFC2198] Perkins, C., Kouvelas, I., Hodson, O., Hardman, V., | |||
| Handley, M., Bolot, J., Vega-Garcia, A., and S. Fosse- | Handley, M., Bolot, J., Vega-Garcia, A., and S. Fosse- | |||
| Parisis, "RTP Payload for Redundant Audio Data", RFC 2198, | Parisis, "RTP Payload for Redundant Audio Data", RFC 2198, | |||
| September 1997. | DOI 10.17487/RFC2198, September 1997, | |||
| <http://www.rfc-editor.org/info/rfc2198>. | ||||
| [RFC3264] Rosenberg, J. and H. Schulzrinne, "An Offer/Answer Model | [RFC3264] Rosenberg, J. and H. Schulzrinne, "An Offer/Answer Model | |||
| with Session Description Protocol (SDP)", RFC 3264, June | with Session Description Protocol (SDP)", RFC 3264, | |||
| 2002. | DOI 10.17487/RFC3264, June 2002, | |||
| <http://www.rfc-editor.org/info/rfc3264>. | ||||
| [RFC3389] Zopf, R., "Real-time Transport Protocol (RTP) Payload for | [RFC3389] Zopf, R., "Real-time Transport Protocol (RTP) Payload for | |||
| Comfort Noise (CN)", RFC 3389, September 2002. | Comfort Noise (CN)", RFC 3389, DOI 10.17487/RFC3389, | |||
| September 2002, <http://www.rfc-editor.org/info/rfc3389>. | ||||
| [RFC4588] Rey, J., Leon, D., Miyazaki, A., Varsa, V., and R. | [RFC4588] Rey, J., Leon, D., Miyazaki, A., Varsa, V., and R. | |||
| Hakenberg, "RTP Retransmission Payload Format", RFC 4588, | Hakenberg, "RTP Retransmission Payload Format", RFC 4588, | |||
| July 2006. | DOI 10.17487/RFC4588, July 2006, | |||
| <http://www.rfc-editor.org/info/rfc4588>. | ||||
| [RFC4733] Schulzrinne, H. and T. Taylor, "RTP Payload for DTMF | [RFC4733] Schulzrinne, H. and T. Taylor, "RTP Payload for DTMF | |||
| Digits, Telephony Tones, and Telephony Signals", RFC 4733, | Digits, Telephony Tones, and Telephony Signals", RFC 4733, | |||
| December 2006. | DOI 10.17487/RFC4733, December 2006, | |||
| <http://www.rfc-editor.org/info/rfc4733>. | ||||
| [RFC5117] Westerlund, M. and S. Wenger, "RTP Topologies", RFC 5117, | [RFC5117] Westerlund, M. and S. Wenger, "RTP Topologies", RFC 5117, | |||
| January 2008. | DOI 10.17487/RFC5117, January 2008, | |||
| <http://www.rfc-editor.org/info/rfc5117>. | ||||
| [RFC5285] Singer, D. and H. Desineni, "A General Mechanism for RTP | [RFC5285] Singer, D. and H. Desineni, "A General Mechanism for RTP | |||
| Header Extensions", RFC 5285, July 2008. | Header Extensions", RFC 5285, DOI 10.17487/RFC5285, July | |||
| 2008, <http://www.rfc-editor.org/info/rfc5285>. | ||||
| [RFC5576] Lennox, J., Ott, J., and T. Schierl, "Source-Specific | [RFC5576] Lennox, J., Ott, J., and T. Schierl, "Source-Specific | |||
| Media Attributes in the Session Description Protocol | Media Attributes in the Session Description Protocol | |||
| (SDP)", RFC 5576, June 2009. | (SDP)", RFC 5576, DOI 10.17487/RFC5576, June 2009, | |||
| <http://www.rfc-editor.org/info/rfc5576>. | ||||
| [RFC5583] Schierl, T. and S. Wenger, "Signaling Media Decoding | [RFC5583] Schierl, T. and S. Wenger, "Signaling Media Decoding | |||
| Dependency in the Session Description Protocol (SDP)", RFC | Dependency in the Session Description Protocol (SDP)", | |||
| 5583, July 2009. | RFC 5583, DOI 10.17487/RFC5583, July 2009, | |||
| <http://www.rfc-editor.org/info/rfc5583>. | ||||
| [RFC6184] Wang, Y., Even, R., Kristensen, T., and R. Jesup, "RTP | [RFC6184] Wang, Y., Even, R., Kristensen, T., and R. Jesup, "RTP | |||
| Payload Format for H.264 Video", RFC 6184, May 2011. | Payload Format for H.264 Video", RFC 6184, | |||
| DOI 10.17487/RFC6184, May 2011, | ||||
| <http://www.rfc-editor.org/info/rfc6184>. | ||||
| [RFC6190] Wenger, S., Wang, Y., Schierl, T., and A. Eleftheriadis, | [RFC6190] Wenger, S., Wang, Y., Schierl, T., and A. Eleftheriadis, | |||
| "RTP Payload Format for Scalable Video Coding", RFC 6190, | "RTP Payload Format for Scalable Video Coding", RFC 6190, | |||
| May 2011. | DOI 10.17487/RFC6190, May 2011, | |||
| <http://www.rfc-editor.org/info/rfc6190>. | ||||
| [RFC6236] Johansson, I. and K. Jung, "Negotiation of Generic Image | [RFC6236] Johansson, I. and K. Jung, "Negotiation of Generic Image | |||
| Attributes in the Session Description Protocol (SDP)", RFC | Attributes in the Session Description Protocol (SDP)", | |||
| 6236, May 2011. | RFC 6236, DOI 10.17487/RFC6236, May 2011, | |||
| <http://www.rfc-editor.org/info/rfc6236>. | ||||
| Appendix A. Changes From Earlier Versions | Appendix A. Changes From Earlier Versions | |||
| NOTE TO RFC EDITOR: Please remove this section prior to publication. | NOTE TO RFC EDITOR: Please remove this section prior to publication. | |||
| A.1. Modifications Between Individual Version -00 and WG Version -00 | A.1. Modifications Between Individual Version -00 and WG Version -00 | |||
| o Added this appendix. | o Added this appendix. | |||
| Authors' Addresses | Authors' Addresses | |||
| End of changes. 28 change blocks. | ||||
| 40 lines changed or deleted | 62 lines changed or added | |||
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