Thursday, March 22, 2018< ^ >
Jonathan Lennox has set the subject to: IETF AVTCore Working Group
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[13:34:07] <Bernard Aboba> Jonathan: Agenda slides
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[13:35:03] <Bernard Aboba> Published documents: no new published RFCs since last meeting.  MISSREFs continue. LRR draft held up by frame marking. Suggestion to take multi-path off of the milestones.
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[13:39:29] <Bernard Aboba> Multipath RTP removed from Charter?  WG will put it on back burner (drop milestone) because nobody working on it.
[13:39:51] <Bernard Aboba> Colin: Involves two pieces of work (multipath ICE + multipath RTP).
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[13:40:11] <Bernard Aboba> Jonathan:  Will encourage people to bring pieces of complete solution to the appropriate WGs.
[13:40:37] <Bernard Aboba> Colin: multipath guidelines is stalled.  Roni resurrected it and it stalled again.  Unconvinced there is value in it.
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[13:41:11] <Bernard Aboba> Roni:  I volunteered to do it. Editor from Huawei changed positions.  I will finish it.  But if people feel there is no real value, I don't know. We are progressing.
[13:42:21] <Bernard Aboba> framemarking:
[13:42:33] <Bernard Aboba> Comments from Mo: had comments but didn't change normative text.
[13:42:48] <Bernard Aboba> Jonathan: May require some changes in sender behavior.
[13:42:59] <Bernard Aboba> Mo: May require some clarification, but not change in normative behavior.
[13:43:43] <Bernard Aboba> Mo: Do you want to prohibit some spatial structures? As written, I-bit is per layer.
[13:44:09] <Bernard Aboba> Mo: Other issue was TL0PICIDX wrapping.
[13:44:20] <Bernard Aboba> Mo: Will add clarifying text on that.
[13:44:38] <Bernard Aboba> Mo: New IPR disclosure.  Had one before with permissive text, new disclosure is FRAND.
[13:45:56] <Bernard Aboba> See:
[13:47:08] <Bernard Aboba> Colin Perkins on feedback mesage draft
[13:47:21] <Bernard Aboba> Summary of changes in -01.
[13:47:50] <Bernard Aboba> Specify Report Timestamp Field (RTS), clarifying behavior, editorial fixe, security considerations.
[13:48:23] <Bernard Aboba> Report Timestamp was ill-specified. -01 draft mandates a clock.
[13:48:59] <Bernard Aboba> More accurate clock than what was suggested before.
[13:49:23] <Bernard Aboba> Makes more sense than signaling different versions.
[13:49:42] <Bernard Aboba> Arrival Time Offset previously specified in ms, now in 1/1024 second unites.
[13:50:53] <Bernard Aboba> Jonathan: main concern is in comparing arrival times to sending times, but OS is probably providing timings in ms, so you'd get rounding errors.
[13:51:12] <Bernard Aboba> Colin: probably think it's unimportant for accuracies we are talking about.
[13:51:17] <Bernard Aboba> Jonathan: I probably agree.
[13:51:42] <Bernard Aboba> What if no packets received?  If you don't get any packets, don't send a report, but should send regular SR or RR.
[13:52:29] <Bernard Aboba> Alternative is to send a report with begin_seq = end_seq.  Doesn't seem worth it, though.
[13:52:38] <Bernard Aboba> What sequence number ranges to include
[13:53:15] <Bernard Aboba> ranges should not overlap and should be consecutive.
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[14:03:58] <Thom Peterson> MIC: How will this spec consider streams that may have FEC? Or should it explicitly declare it should not be present?
[14:05:39] <Magnus Westerlund> Thom, in queue
[14:07:26] <Thom Peterson> Magnus: Thank you
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[14:15:06] <Magnus Westerlund> Moving to payload WG now.
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