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<body dir="ltr" style="overflow-wrap:break-word; word-break: break-word;"><div class="mail_android_message" style="line-height: 1; padding: 0.5em">hi Kevin.<br/><br/>sorry. Don't know. It will depend on how the net-connected sensor and its infrastructure would like to have it.<br/><br/>kr<br/><br/>-- <br/>Diese Nachricht wurde von meinem Android Mobiltelefon mit GMX Mail gesendet.</div><div class="mail_android_quote" style="line-height: 1; padding: 0.3em"><html><body>Am 30.11.20, 20:30 schrieb Wriston Kevin <Kevin.Wriston@kontron.com>:</body></html><blockquote class="gmail_quote" style="margin: 0.8ex 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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RTSP - also interesting because I was checking connectivity with Mohoc which makes helmet-mounted cameras. Their protocol is RSTP for the video stream and I assume that audio is multiplexed with the H.264 frames. Would that then also the correct protocol for net-connected sensors?
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<font color="#000000" face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> Christoph Valentin <christoph.valentin@gmx.at><br> <b>Sent:</b> Monday, November 30, 2020 8:23 PM<br> <b>To:</b> x3d-public@web3d.org <x3d-public@web3d.org><br> <b>Subject:</b> Re: [x3d-public] Fw: Re: X3D4 endgame review: normative references and informative bibliography</font>
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Have to do a correction (as you tell the primary interest will be in streaming).
<br>
<br> the RFC 3261 (SIP) would be rather used for peer-to-peer multimedia calls.
<br>
<br> when it is about uni-directional streaming from a server to a client, then the RFC 7826 RTSP (real time streaming protocol) seems to be the right choice.
<br>
<br> kr
<br>
<br> --
<br> Diese Nachricht wurde von meinem Android Mobiltelefon mit GMX Mail gesendet.
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Am 30.11.20, 18:44 schrieb Don Brutzman <brutzman@nps.edu>:
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Thanks for the review and follow-through.
<br>
<br> On 11/29/2020 12:29 PM, Christoph Valentin wrote:
<br> >
<br> > retransmitted due to connectivity issues.....
<br> >
<br> > --
<br> > Diese Nachricht wurde von meinem Android Mobiltelefon mit GMX Mail gesendet.
<br> > Am 29.11.20, 00:10 schrieb Christoph Valentin <christoph.valentin@gmx.at>:
<br> >
<br> > Hello,
<br> > A few notes from my perspective:
<br> > - RFC 1889 RTP has been obsoleted by RFC 3550 et. al. (STD 64)
<br>
<br> Aha, excellent catch.
<br>
<br> I had assumed prior RFCs would be annotated to indicate when they had been superceded. That is not the case (at this url at least).
<br>
<br> Better way to check is
<br>
<br> * RFC Editor
<br> <a href="https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rfc-editor.org%2F&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358172010%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=C2ukaN6WRE6qjFRf9pyq2anhu%2FK6neFwZWrgUGXKTDM%3D&reserved=0">https://www.rfc-editor.org</a>
<br>
<br> which indicates as you write above and leads to
<br>
<br> * <a href="https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rfc-editor.org%2Finfo%2Frfc3550&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358182006%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=cnxur9RPiFlFS%2BmCc6X%2F%2F8hJpcZYnKJilOtkcT7l7aI%3D&reserved=0"> https://www.rfc-editor.org/info/rfc3550</a>
<br>
<br> Am thinking these are better URL addresses to use than the classic ietf.org/rfc addresses since they are authoritative and since the RFC Editor controls them. Certainly more convenient for reader since latest status and multiple forms are provided for each RFC.
<br>
<br> I am now going through many checks of all the RFCs, applying your change and a number of related ones. This will appear later today. Replying now FYI.
<br>
<br> Thanks very much Christoph for excellent feedback.
<br>
<br> > If you asked me, I would add following informational resources
<br> > - RFC 3551 et. al. (AVP) A/V Profile - how to transmit audio/video over RTP?
<br> > - I would suggest to write a new RFC xxxx Collaborative 3D Profile (C3P) - how to transmit shared state over RTP? if not yet exist
<br> > - Stream Control Transmission Protocol RFC 4960 (SCTP could be used for secure transport of RTP user data)
<br> > - RFC 3261 et.al. (about 100 RFCs) - Session Initiation Protocol - SIP - for dynamic allocation of RTP streams
<br>
<br> Well this certainly remains a worthy agenda for applied research.
<br>
<br> As far as the X3D specification goes, we only add references when they help explain requirements or guidelines in the specification.
<br>
<br> As far as audio/video streaming goes, I think we will learn more (about audio at least) as we implement the W3C Audio API and corresponding Streams W3C Draft Recommendations.
<br>
<br>
<br> > All the best
<br> > Christoph
<br> > *Gesendet:* Samstag, 28. November 2020 um 20:32 Uhr
<br> > *Von:* "Don Brutzman" <brutzman@nps.edu>
<br> > *An:* "X3D Graphics public mailing list" <x3d-public@web3d.org>
<br> > *Betreff:* [x3d-public] X3D4 endgame review: normative references and informative bibliography
<br> > We've updated a number of reference and bibliographic entries.
<br> >
<br> > Request review and comment. A number of these references remain valid but are somewhat dated, and we have added several new technologies... so if additional or different entries seem appropriate, then please suggest them.
<br> >
<br> > [1] X3D4 Architecture, Normative references
<br> > <a href="https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.web3d.org%2Fspecifications%2FX3Dv4Draft%2FISO-IEC19775-1v4-WD3%2FPart01%2Freferences.html&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358192000%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2BObatpKyOsxXQBBtmyYTcsZBSB1OS8vyeg6Dz%2FTeXDE%3D&reserved=0"> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD3/Part01/references.html</a> <<a href="https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.web3d.org%2Fspecifications%2FX3Dv4Draft%2FISO-IEC19775-1v4-WD3%2FPart01%2Freferences.html&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358192000%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2BObatpKyOsxXQBBtmyYTcsZBSB1OS8vyeg6Dz%2FTeXDE%3D&reserved=0">https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD3/Part01/references.html</a>>
<br> >
<br> > [2] X3D4 Architecture, (Informative) bibliography
<br> > <a href="https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.web3d.org%2Fspecifications%2FX3Dv4Draft%2FISO-IEC19775-1v4-WD3%2FPart01%2Fbibliography.html&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358201995%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=4q5EnrjQDitSGvINDiTMKfon4yLGxwtHQmGBxcDubx0%3D&reserved=0"> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD3/Part01/bibliography.html</a> <<a href="https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.web3d.org%2Fspecifications%2FX3Dv4Draft%2FISO-IEC19775-1v4-WD3%2FPart01%2Fbibliography.html&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358201995%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=4q5EnrjQDitSGvINDiTMKfon4yLGxwtHQmGBxcDubx0%3D&reserved=0">https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD3/Part01/bibliography.html</a>>
<br> >
<br> > Have fun with X3D4! 8)
<br> >
<br> > all the best, Don
<br> > --
<br> > Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu
<br> > Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149
<br> > X3D graphics, virtual worlds, navy robotics <a href="https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffaculty.nps.edu%2Fbrutzman&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358211991%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=WwN%2FcHKvAfC6jSO1Q68SjNWue9TNj3TX9BmJ6rI%2FFCQ%3D&reserved=0"> http://faculty.nps.edu/brutzman</a> <<a href="https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffaculty.nps.edu%2Fbrutzman&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358211991%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=WwN%2FcHKvAfC6jSO1Q68SjNWue9TNj3TX9BmJ6rI%2FFCQ%3D&reserved=0">http://faculty.nps.edu/brutzman</a>>
<br> >
<br> > _______________________________________________
<br> > x3d-public mailing list
<br> > x3d-public@web3d.org
<br> > <a href="https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fweb3d.org%2Fmailman%2Flistinfo%2Fx3d-public_web3d.org&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358221991%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=B%2B5oAvHgZOxTyBkRlIJmvX3FoTZ28cUhkEpUTGS6frg%3D&reserved=0"> http://web3d.org/mailman/listinfo/x3d-public_web3d.org</a> <<a href="https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fweb3d.org%2Fmailman%2Flistinfo%2Fx3d-public_web3d.org&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358221991%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=B%2B5oAvHgZOxTyBkRlIJmvX3FoTZ28cUhkEpUTGS6frg%3D&reserved=0">http://web3d.org/mailman/listinfo/x3d-public_web3d.org</a>>
<br> >
<br> >
<br> > _______________________________________________
<br> > x3d-public mailing list
<br> > x3d-public@web3d.org
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<br> >
<br>
<br> all the best, Don
<br> --
<br> Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu
<br> Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149
<br> X3D graphics, virtual worlds, navy robotics <a href="https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffaculty.nps.edu%2Fbrutzman&data=04%7C01%7Ckevin.wriston%40kontron.com%7C910c00e550164cc5c66408d895657998%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C1%7C637423610358231983%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=bV6Et%2BKqwPHNF2tBqWqQ8fuKVulUzNoL8UpEcwRuIWU%3D&reserved=0"> http://faculty.nps.edu/brutzman</a>
<br>
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