Of itu-t sg16 wp3 and iso/iec jtc1/SC29/WG11

High-level syntax for HEVC extensions (AHG9) ([e-mail]) Identify opportunities for common approaches for multi-view and scalable high-level extensions of HEVC. Study NAL unit header, video parameter set, sequence parameter set, picture parameter set, and slice header syntax designs. Study SEI messages and VUI syntax designs needed for HEVC extensions. Assist in software development and text drafting for the high-level syntax in the HEVC extensions designs. Study the high level syntax for auxiliary pictures with consideration of JCTVC-N0063/JCT3V-E0049 as well as signalling for carrying alpha channel and 4:4:4 chroma enhancement as auxiliary pictures. Study JCTVC-N0355/JCT3V-E0092 and other mechanisms to extend the number of layers (beyond 64) in comparison with reserving nuh_layer_id value of 63 to provide an extension, in terms of functionality supported and signalling efficiency. Coordinate efforts with JCT-3V AHG7 on high-level syntax issues in relation to 3D extensions.	M. M. Hannuksela (chair), J. Boyce, Y. Chen, S. Deshpande, A. Norkin, Y. K. Wang, P. Wu (vice chairs)
N