The Joint Collaborative Team on Video Coding (jct-vc) of itu-t wp3/16 and iso/iec jtc 1/ sc 29/ wg 11 held its tenth meeting during 11-20 July 2012 at the City Conference Centre (ccc), a k. a

JCTVC-J0504 AHG9 & AHG13: Cross-check of JCTVC-J0120: Identical reference picture lists [Philippe Bordes, Pierre Andrivon (Technicolor)] [late]
JCTVC-J0182 AHG 9 / AHG 13: On identical reference picture lists [Hendry, Y. Jeon, S. Park, B. Jeon (LG)]

Roughly similar to J0120 – no action taken.

JCTVC-J0222 AHG9: Improved weighted prediction parameter signaling [A. Tanizawa, T. Chujoh, T. Yamakage (Toshiba)]

Somewhat similar in spirit to J0120, J0055, J0182 – no action taken.

JCTVC-J0295 Cross-check of improved weighted prediction parameter signalling (JCTVC-J0222) [Yong He (InterDigital)] [late]
JCTVC-J0221 AHG9: Clean-up of semantics and decoding process on weighted prediction [A. Tanizawa, T. Chujoh, T. Yamakage (Toshiba)]

First aspect suggests an editorial improvement, which is delegated to the editors. Decision (Ed.): Editor action item.

Second aspect proposes to limit the offset syntax element for chroma to the range from −512 to +511.

Decision: Adopt this range limit.
JCTVC-J0252 AHG9: Cross-check of JCTVC-J0221: Clean-up of semantics and decoding process on weighted prediction [P. Bordes, P. Andrivon (Technicolor)]

JCTVC-J0503 AHG9: Simplification of weighted prediction signaling in PPS [P. Bordes, P. Andrivon (Technicolor)] [late]

In HEVC, the signaling of Weighted Prediction in the Picture Parameters Set uses two flags: one for slices P and one for slices B. It is proposed to merge these two flags into one single flag.

This change seems unnecessary – no action taken.
JCTVC-J0525 Mental cross-check of JCTVC-J0503 (AHG9: Simplification of weighted prediction signaling in PPS) [Yan Ye (??)] [late]
JCTVC-J0119 AHG13: On reference picture list modification [A. K. Ramasubramonian, Y. Chen, Y.-K. Wang (Qualcomm)]

In this contribution, a change of the reference picture list modification (RPLM) design is proposed. It is reported by the proponents that, for test cases 2.8 and 3.5 in the common test conditions for reference picture marking and list construction proposals in JCTVC-H0725, 24% bit reduction of RPLM bits was achieved for the low-delay configuration compared to the RPLM method in HEVC WD7, and the performance is the same for the random access configuration. It is further that the proposed RPLM method, when applied to HEVC-based 3DV, outperforms the RPLM method in HEVC draft 7, when applied to 3DV, with 34% bit reduction on average for non-base views under the 3DV common test conditions.

The AVC-like method of RPLM was suggested to be better when the lists are long.

The current proposal is simpler than what was in WD 5. The biggest difference between the proposal and the current scheme is the ability to terminate the syntax loop before exhaustively listing every picture in the list.

However, we also have a desire for stability, and currently don't seem to have a strong need for long lists (with our current profile plan).

No action taken on this.

JCTVC-J0446 Cross-check report of AHG13: On reference picture list modification (JCTVC-J0119) [Sue M. T. Naing, Chong Soon Lim (Panasonic)] [late]