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

Multi-layer hypothetical reference decoder (AHG20) ([e-mail]) Study the issues related to layer-specific and combined multi-layer HRD operation (including DPB and CPB), including the proposed . Identify layer-specific or combined multi-layer HRD operations that need to be addressed at the system and/or video coding layer. Study issues and implications of either or both HRD mechanisms when adding or removing layers at re-distribution points. Study issues and implications of layer-specific buffer operation in relevant application contexts. Study high-level syntax needs for HRD information, e.g. in SEI, SPS VUI, or VPS VUI.	K. Suehring (chair), S. Deshpande, M. M. Hannuksela, J. Kang, A. K.  Ramasubramonian, A. Tabatabai (vice chairs)
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xxx (AHG21) ([e-mail]) Identify use cases and key functional elements for application of reduced-complexity decoding processes for decoding of bitstreams encoded for HEVC and its extensions Analyze tradeoffs for optimization of video quality in the application of reduced-complexity decoding processes Particularly study characteristics of design and optimization for decoding processes with reduced bit depth Consider and analyze the impact of inter-picture dependencies and cross-region spatial prediction dependencies in the application of reduced-complexity decoding processes Study potential approaches to describe/specify the provision of best-effort decoding capabilities in the HEVC text specification	xxx (co chairs)	N