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

5.12.6.2Motion vector prediction related high-level syntax design (1 – done)

JCTVC-J0187 On temporal_mvp_enable_flag [K. Sato (Sony)]

In the SPS and slice header, there is a syntax like “temporal_mvp_enable_flag”. This document provides result of comparison between temporal_mvp_enable_flag =1 and = 0. In addition the contribution proposes to separate this flag into temporal_mvp_enable_flag_l0 and temporal_mvp_enable_flag_l1 to provide more degrees of freedom for trade-off between coding efficiency and complexity.

The proposal is to improve coding efficiency for cases where different pictures are in different lists and there was a desire to avoid error propagation from pictures in one of the lists but not the other.

Some participants commented that a similar functionality can be obtained using combination of collocated picture identification, such that the proposed concept seemed unnecessary.

JCTVC-J0361 Cross-check report of JCTVC-J0187 on temporal_mvp_enable_flag [S.-C. Lim, H. Y. Kim, J. Lee (ETRI)] [late]