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-J0501 AHG9: Mental cross-check of JCTVC-J0108 (Splicing-friendly coding of some parameters) [M. M. Hannuksela (Nokia)] [late]

5.12.2.3Temporal layer access (TLA) pictures (3 – done)

JCTVC-J0156 AHG 10: Generalized definition of the TLA for scalable extension [C. K. Kim, Hendry, B. Jeon (LGE)]

This contribution suggests that the layer switching feature enabled by current TLA NAL unit for temporal scalability may be extended for other scalability aspects such as spatial and quality scalabilities. It was proposed to generalize the semantics of current TLA NAL unit to provide a hook for similar concept for scalable extensions. This was asserted to extend the temporal layer switching to any scalability layer switching and does not need to add new NAL types for that purpose.

It is assessed that the proposed generalization does not change the concept of TLA for HEVC specification.

S. Deshpande indicated a plan to submit a cross-check.

It was remarked that in the current context, this seems to be just an editorial change proposal, and that it could be possible to modify the semantics and syntax element names later, when the extended functionality is needed.

It was remarked that an example shown corresponded to what is considered an IDR picture in a higher spatial layer in the SVC design, and that this could also be the case in a future scalable HEVC design.

No action seemed needed for version 1.