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Re: [MMUSIC] Possible BUNDLE alternative syntax: explicit m-line for bundled session

"Cullen Jennings (fluffy)" <fluffy@cisco.com> Wed, 24 October 2012 20:57 UTC

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From: "Cullen Jennings (fluffy)" <fluffy@cisco.com>
To: Jonathan Lennox <jonathan@vidyo.com>
Thread-Topic: [MMUSIC] Possible BUNDLE alternative syntax: explicit m-line for bundled session
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Date: Wed, 24 Oct 2012 20:57:05 +0000
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References: <CE457B53-341D-48C8-8CD7-2A0958407F37@vidyo.com> <50222D44.5040105@alvestrand.no> <BLU401-EAS1263CBF056291C5313CA95193CD0@phx.gbl> <502258CA.5030009@alvestrand.no> <BLU002-W14079A44079EFA284B8E94793CC0@phx.gbl> <01C25C86-D664-468E-923F-4EEA506ACEDF@cisco.com> <5038E0EE.60608@alvestrand.no>, <BLU401-EAS1449593A32E42F2871B483E93BC0@phx.gbl> <7F2072F1E0DE894DA4B517B93C6A05853409FF2F24@ESESSCMS0356.eemea.ericsson.se> <503B29B6.5000000@alvestrand.no>, <0CC47B95-7817-4E2F-B7EE-04FD33E8113C@cisco.com> <7F2072F1E0DE894DA4B517B93C6A05853409FF2F97@ESESSCMS0356.eemea.ericsson.se>, <5E3FF4B9-1428-4273-8C07-CA7E09E94108@cisco.com> <7F2072F1E0DE894DA4B517B93C6A05853409FF2F98@ESESSCMS0356.eemea.ericsson.se>, <03FBA798AC24E3498B74F47FD082A92F1773E523@US70UWXCHMBA04.zam.alcatel-lucent.com> <7F2072F1E0DE894DA4B517B93C6A05853409FF2F9D@ESESSCMS0356.eemea.ericsson.se>, <03FBA798AC24E3498B74F47FD082A92F1773E53E@US70UWXCHMBA04.zam.alcatel-lucent.com> <7F2072F1E0DE894DA4B517B93C6A0585340 9FF2F9E@ESESSCMS0356. e emea.ericsson.se>, <03FBA798AC24E3498B74F47FD082A92F1773E645@US70UWXCHMBA04.zam.alcatel-lucent.com> <7F2072F1E0DE894DA4B517B93C6A05853409FF2F9F@ESESSCMS0356.eemea.ericsson.se>, <03FBA798AC24E3498B74F47FD082A92F1773E771@US70UWXCHMBA04.zam.alcatel-lucent.com> <7F2072F1E0DE894DA4B517B93C6A05853409FF2FA2@ESESSCMS0356.eemea.ericsson.se>, <03FBA798AC24E3498B74F47FD082A92F1773E7FC@US70UWXCHMBA04.zam.alcatel-lucent.com> <7F2072F1E0DE894DA4B517B93C6A05853409FF2FA4@ESESSCMS0356.eemea.ericsson.se> <DA165A8A2929C6429CAB403A76B573A5146A1409@szxeml534-mbx.china.huawei.com>, <000001cd9815$d0882190$719864b0$@co.in> <7F2072F1E0DE894DA4B517B93C6A05853409FF2FB1@ESESSCMS0356.eemea.ericsson.se>, <000601cd99bc$5b1e5bb0$115b1310$@co.in> <7F2072F1E0DE894DA4B517B93C6A05853409FF2FB4@ESESSCMS0356.eemea.ericsson.se> <46F70838-8689-4C1C-9C49-B981B1E2D208@vidyo.com>
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Cc: "mmusic@ietf.org" <mmusic@ietf.org>, Christer Holmberg <christer.holmberg@ericsson.com>
Subject: Re: [MMUSIC] Possible BUNDLE alternative syntax: explicit m-line for bundled session
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On Sep 24, 2012, at 12:41 PM, Jonathan Lennox <jonathan@vidyo.com> wrote:

> 
> On Sep 23, 2012, at 4:37 PM, Christer Holmberg wrote:
>> 
>>> Instead, Let us discuss the generic categories of attributes and mention in this draft.
>> 
>> I am not sure I understood.
>> 
>> For sure we will have to discuss how/if attributes are affected, but we need to have a general idea on how the multiplexing is going to be offered. Same ports, m=bundle, or something else...
> 
> 
> One of the major benefits of the "pure" m=bundle proposal is that we *don't* have to discuss categories of attributes (other than to make recommendations to implementors).  The attributes inside each unbundled m= line need to be self-consistent, and the attributes inside the m=bundle line also need to be self-consistent, but there doesn't need to be any standardized mechanism to infer the one from the others.
> 
> 

But the problem is that for some attributes, we have no way of expressing them per ssrc, only per m line. Yes I realize we could write many extentions to SDP to have new ways of doing it all per ssrc but this seems to be a disadvantage to me. All I wanted was to put multiple things on the same port - I should have to redefine a bunch of new  SDP to do that.

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