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RFC 3009

Registration of parityfec MIME types

Pages: 10
Obsoleted by:  5109

ToP   noToC   RFC3009 - Page 1
Network Working Group                                       J. Rosenberg
Request for Comments: 3009                                   dynamicsoft
Category: Standards Track                                 H. Schulzrinne
                                                             Columbia U.
                                                           November 2000


                  Registration of parityfec MIME types

Status of this Memo

   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 "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

The RTP (Real-time Transport Protocol) payload format for generic forward error correction allows RTP participants to improve loss resiliency through the use of traditional parity-based channel codes. This payload format requires four new MIME types, audio/parityfec, video/parityfec, text/parityfec and application/parityfec. This document serves as the MIME type registration for those formats.

1 Introduction

The RTP payload format for generic forward error correction [1] allows RTP participants to improve loss resiliency through the use of traditional parity-based channel codes. This payload format requires four new MIME types, audio/parityfec, video/parityfec, text/paritfyfec and application/parityfec. RFC 2048 [2] defines procedures for registration of new MIME types within the IETF tree. Furthermore, the Audio/Video Transport working group has defined additional procedures that must be followed when registering RTP payload formats [3]. This document serves as the MIME type registration for those formats based on those procedures.
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2 Registration of audio/parityfec

To: ietf-types@iana.org Subject: Registration of MIME media type audio/parityfec MIME media type name: audio MIME subtype name: parityfec Required parameters: none Note that [3] mandates that RTP payload formats without a defined rate must define a rate parameter as part of their MIME registration. The payload format for generic forward error correction [1] does not specify a rate parameter. However, the rate for FEC data is equal to the rate of the media data it protects. Optional parameters: none Typical optional parameters [3], such as the number of channels, and the duration of audio per packet, do not apply to FEC data. The number of channels is effectively the same as the media data it protects; the same is true for the duration of audio per packet. Encoding considerations: This format is only defined for transport within the Real Time Transport protocol (RTP) [4,5]. Its transport within RTP is fully specified with RFC 2733 [1]. Security considerations: the same security considerations apply to these mime registrations as to the payloads for for them, as detailed in RFC 2733. Interoperability considerations: none Published specification: This MIME type is described fully within RFC 2733 [1]. Applications which use this media type: Audio and video streaming tools which seek to improve resiliency to loss by sending additional data with the media stream. Additional information: none
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       Person & email address to contact for further information:

            Jonathan Rosenberg
            dynamicsoft
            72 Eagle Rock Avenue
            First Floor
            East Hanover, NJ 07936
            email: jdrosen@dynamicsoft.com
                   jdrosen@alum.mit.edu

       Intended usage: COMMON

       Author/Change controller: This registration is part of the IETF
            registration tree.

       RTP and SDP Issues: Usage of this format within RTP and the
            Session Description Protocol (SDP) [6] are fully specified
            within RFC 2733 [1].

3 Registration of video/parityfec

To: ietf-types@iana.org Subject: Registration of MIME media type video/parityfec MIME media type name: video MIME subtype name: parityfec Required parameters: none Note that [3] mandates that RTP payload formats without a defined rate must define a rate parameter as part of their MIME registration. The payload format for generic forward error correction [1] does not specify a rate parameter. However, the rate for FEC data is equal to the rate of the media data it protects. Optional parameters: none Typical optional parameters [3], such as the number of channels, and the duration of audio per packet, do not apply to FEC data. The number of channels is effectively the same as the media data it protects; the same is true for the duration of video per packet.
ToP   noToC   RFC3009 - Page 4
       Encoding considerations: This format is only defined for
            transport within the Real Time Transport protocol (RTP)
            [4,5].  Its transport within RTP is fully specified with RFC
            2733 [1].

       Security considerations: the same security considerations
            apply to these MIME registrations as to the payloads for
            for them, as detailed in RFC 2733.

       Interoperability considerations: none

       Published specification: This MIME type is described fully
            within RFC 2733 [1].

       Applications which use this media type: Audio and video
            streaming tools which seek to improve resiliency to loss by
            sending additional data with the media stream.

       Additional information: none

       Person & email address to contact for further information:

            Jonathan Rosenberg
            dynamicsoft
            72 Eagle Rock Avenue
            First Floor
            East Hanover, NJ 07936
            email: jdrosen@dynamicsoft.com
                   jdrosen@alum.mit.edu

       Intended usage: COMMON

       Author/Change controller: This registration is part of the IETF
            registration tree.

       RTP and SDP Issues: Usage of this format within RTP and the
            Session Description Protocol (SDP) [6] are fully specified
            within RFC 2733 [1].

4 Registration of text/parityfec

To: ietf-types@iana.org Subject: Registration of MIME media type text/parityfec MIME media type name: text MIME subtype name: parityfec
ToP   noToC   RFC3009 - Page 5
       Required parameters: none

            Note that [3] mandates that RTP payload formats without a
            defined rate must define a rate parameter as part of their
            MIME registration.  The payload format for generic forward
            error correction [1] does not specify a rate parameter.
            However, the rate for FEC data is equal to the rate of the
            media data it protects.

       Optional parameters: none

            Typical optional parameters [3], such as the number of
            channels, and the duration of audio per packet, do not
            apply to FEC data.  The number of channels is effectively
            the same as the media data it protects; the same is true
            for the duration of text per packet.

       Encoding considerations: This format is only defined for
            transport within the Real Time Transport protocol (RTP)
            [4,5].  Its transport within RTP is fully specified with RFC
            2733 [1].

       Security considerations: the same security considerations
            apply to these MIME registrations as to the payloads for
            for them, as detailed in RFC 2733.

       Interoperability considerations: none

       Published specification: This MIME type is described fully
            within RFC 2733 [1].

       Applications which use this media type: Audio, video and text
            streaming tools which seek to improve resiliency to loss by
            sending additional data with the media stream.

       Additional information: none

       Person & email address to contact for further information:

            Jonathan Rosenberg
            dynamicsoft
            72 Eagle Rock Avenue
            First Floor
            East Hanover, NJ 07936
            email: jdrosen@dynamicsoft.com
                   jdrosen@alum.mit.edu

       Intended usage: COMMON
ToP   noToC   RFC3009 - Page 6
       Author/Change controller: This registration is part of the IETF
            registration tree.

       RTP and SDP Issues: Usage of this format within RTP and the
            Session Description Protocol (SDP) [6] are fully specified
            within RFC 2733 [1].

5 Registration of application/parityfec

To: ietf-types@iana.org Subject: Registration of MIME media type application/parityfec MIME media type name: application MIME subtype name: parityfec Required parameters: none Note that [3] mandates that RTP payload formats without a defined rate must define a rate parameter as part of their MIME registration. The payload format for generic forward error correction [1] does not specify a rate parameter. However, the rate for FEC data is equal to the rate of the media data it protects. Optional parameters: none Typical optional parameters [3], such as the number of channels, and the duration of audio per packet, do not apply to FEC data. The number of channels is effectively the same as the media data it protects; the same is true for the duration of application data per packet. Encoding considerations: This format is only defined for transport within the Real Time Transport protocol (RTP) [4,5]. Its transport within RTP is fully specified with RFC 2733 [1]. Security considerations: the same security considerations apply to these MIME registrations as to the payloads for for them, as detailed in RFC 2733. Interoperability considerations: none Published specification: This MIME type is described fully within RFC 2733 [1].
ToP   noToC   RFC3009 - Page 7
        Applications which use this media type: Audio, video and
             application streaming tools which seek to improve
             resiliency to loss by sending additional data with the
             media stream.

        Additional information: none

        Person & email address to contact for further information:

             Jonathan Rosenberg
             dynamicsoft
             72 Eagle Rock Avenue
             First Floor
             East Hanover, NJ 07936
             email: jdrosen@dynamicsoft.com
                    jdrosen@alum.mit.edu

        Intended usage: COMMON

        Author/Change controller: This registration is part of the IETF
             registration tree.

        RTP and SDP Issues: Usage of this format within RTP and the
             Session Description Protocol (SDP) [6] are fully specified
             within RFC 2733 [1].

6 Security Considerations

This MIME registration does not introduce any additional security considerations.
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7 Authors' Addresses

Jonathan Rosenberg dynamicsoft 72 Eagle Rock Avenue First Floor East Hanover, NJ 07936 EMail: jdrosen@dynamicsoft.com Henning Schulzrinne Columbia University M/S 0401 1214 Amsterdam Ave. New York, NY 10027-7003 EMail: schulzrinne@cs.columbia.edu
ToP   noToC   RFC3009 - Page 9

8 Bibliography

[1] Rosenberg, J. and H. Schulzrinne, "An RTP Payload Format for Generic Forward Error Correction", RFC 2733, December 1999. [2] Freed, N., Klensin, J. and J. Postel, "Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures", RFC 2048, November 1996. [3] Casner, S. and P. Hoschka, "MIME type registration of RTP payload formats", Work in Progress. [4] Schulzrinne, H., Casner, S., Frederick, R. and V. Jacobson, "RTP: a transport protocol for real-time applications", RFC 1889, January 1996. [5] Schulzrinne, H., Casner, S., Frederick, R. and V. Jacobson, "RTP: a transport protocol for real-time applications", Work in Progress. [6] Handley, M. and V. Jacobson, "SDP: Session Description Protocol", RFC 2327, April 1998.
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9 Full Copyright Statement

Copyright (C) The Internet Society (2000). All Rights Reserved. This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English. The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Acknowledgement Funding for the RFC Editor function is currently provided by the Internet Society.