Re: [rtcweb] [MMUSIC] m-line recycling
Justin Uberti <juberti@google.com> Mon, 19 May 2014 03:38 UTC
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From: Justin Uberti <juberti@google.com>
Date: Sun, 18 May 2014 20:37:44 -0700
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To: Martin Thomson <martin.thomson@gmail.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>, mmusic WG <mmusic@ietf.org>
Subject: Re: [rtcweb] [MMUSIC] m-line recycling
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One option could be to only reuse m= lines that both sides have stopped using (i.e. port=0, as opposed to a=sendonly/recvonly). This provides most of the benefits of recycling without having to deal with the notion of 'compatible'. On Mon, May 12, 2014 at 7:43 AM, Martin Thomson <martin.thomson@gmail.com>wrote: > Yes, some words about being compatible and all that entails are required > if we intend to stipulate it being reused. Either that or we can say MAY. > The need for a strong definition diminishes then. > On May 11, 2014 11:54 PM, "Christer Holmberg" < > christer.holmberg@ericsson.com> wrote: > >> Hi, >> >> >> >> I don’t think it should be a MUST – at least not only based on the media >> type. Because, there may be other properties than the media type associated >> with the “m=” line, why one does not want to use it for the specific MST. >> >> >> >> Regards, >> >> >> >> Christer >> >> >> >> >> >> >> >> *From:* mmusic [mailto:mmusic-bounces@ietf.org] *On Behalf Of *Eric >> Rescorla >> *Sent:* 12. toukokuuta 2014 7:50 >> *To:* mmusic WG; rtcweb@ietf.org >> *Subject:* [MMUSIC] m-line recycling >> >> >> >> The JSEP spec specifies m-line recycling: >> >> >> >> >> >> >> >> o If any MediaStreamTracks have been added, and there exist m= >> >> sections of the appropriate media type with no associated >> >> MediaStreamTracks (i.e. as described in the preceding paragraph), >> >> those m= sections MUST be recycled by adding the new >> >> MediaStreamTrack to the m= section. This is done by adding the >> >> necessary "a=msid", "a=ssrc", and "a=ssrc-group" lines to the >> >> recycled m= section, and removing the "a=recvonly" attribute. >> >> Based on the minutes from IETF 89, we were going to take this to mmusic. >> >> http://etherpad.tools.ietf.org:9000/p/notes-ietf-89-rtcweb?useMonospaceFont=true >> >> >> >> >> Thoughts? >> >> -Ekr >> >> >> >> https://github.com/rtcweb-wg/jsep/issues/21 >> >> _______________________________________________ >> rtcweb mailing list >> rtcweb@ietf.org >> https://www.ietf.org/mailman/listinfo/rtcweb >> >> > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www.ietf.org/mailman/listinfo/mmusic > >
- [rtcweb] m-line recycling Eric Rescorla
- Re: [rtcweb] [MMUSIC] m-line recycling Christer Holmberg
- Re: [rtcweb] [MMUSIC] m-line recycling Martin Thomson
- Re: [rtcweb] [MMUSIC] m-line recycling Justin Uberti
- Re: [rtcweb] [MMUSIC] m-line recycling Christer Holmberg
- Re: [rtcweb] [MMUSIC] m-line recycling Justin Uberti