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
http://www.timeanddate.com/worldclock/fixedtime.html?month=4&day=8&year=2008&hour=7&min=0&sec=0&p1=224
Dial in number:
+1-678-7955235
Regards
Roni
Even