The SVC design team had a conference call on March 25th.
The first objective of the design team is to get consensus on the decoding order recovery solution. Roni mentioned that if there will be no agreement the WG chairs will draft a proposal and send it to the AVT list trying to see if there if consensus can be agreed on the list and if no consensus we may need to sue RFC 3929 procedures.
Roni Noted that there are three IPR statements concerning this draft from LMI (Vidyo), Nokia and BT
The meeting started with a presentation on the "decoding order recovery" prepared by Ye-kui (thanks). The presentation describes the two optional solutions: "Classical" RTP and CL-DON.
The presentation suggested two options to combine the two methods:
• Combination of the two existing solutions for the non-interleaved packetization mode
– Comb#1: Receivers are required to support the 1st solution even PACSI NAL units carrying CS-DON information are present, meaning that insertion of video NAL units to avoid type I non-AU-aligned NAL units in sent NAL unit stream is always needed, though that is not needed by the 2nd solution.
– Comb#2: An alternative is to mandate both inclusion of PACSI NAL units carrying CS-DON information and insertion of video NAL units to avoid type I non-AU-aligned NAL units in sent NAL unit stream, such that the receiver can freely choose which solution to use.
Stephan Wenger announced that Nokia may be willing to change the IPR statement adding non-assert clause if CL-DON will be mandatory. (Making Comb#2 as the compromised solution)
Stephan also pointed out that such non-assert terms will be less restrictive then the LMI one.
Thomas Wiegand said that this is a good direction and asked for time to get feedback.
Alex mentioned that Vidyo will review their statement.
The group mentioned that there is still the BT IPR declaration that does not have the non-assert term and asked if BT can reconsider its IPR statement based on the good faith shown by the other parties. (There was no BT member in the meeting)
The summary is that the parties will look at a possibility to adopt Comb#2 based on Stephan's statement and will try to give the response to the next meeting of the design team
The editors of the draft should continue with the text addressing the other open issues in order to expedite the work.
There is also a need to expand the text explaining the decoding order procedures.
The next meeting is on April 8th
Time: 7:00 PST (San Francisco), 17:00 Israel
Dial in number: +1-678-7955235
Regards
Roni Even