Research-v9.0.0 anchor. Includes the following since the previous anchor: Candidate Tools --------------- CWG-E103: Move max frame width/height,color_config() forward CWG-E156: CCSO with filter shapes CWG-E149: MHCCP using 4 parameters CWG-E168: Sub-pixel block vector for intraBC mode CWG-E157: Align Deblocking Filter Boundaries With AVM Partitioning Scheme CWG-E176: CCSO improvements CWG-E182: Simplification of IBP DC mode CWG-E153: Simplification for AIMC CWG-E180: Context model optimization CWG-E194: Secondary transforms with flexible support regions (Test 3) + CWG-E124: Complexity Reduction for Secondary Transforms (method 4 on + method 1 off by default) CWG-E160: Simplification of Warp Reference List (WRL) CWG-E140: Unify parameter computation in least square fitting CWG-E159: DRL Improvements and Reorder Control Flag CWG-E197: Bugfix for the signaling of transform partition types CWG-E203: Improved Frame Context Finalization for Tile-Based Coding CWG-E239: Adaptation rate improvement with CDF propagation CWG-E192: Explicitly Signaled Frame-Level Non-separable Wiener Filters for Chroma CWG-E119: Memory Reduction for RefMV Bank CWG-E193: On Precision of Inverse DDT CWG-E210: Context Reduction for Rectangle Partition Type CWG-E227: Optimization of Frame Level Syntax Elements Signaling CWG-E236: Extensive warp prediction filters CWG-E215: Data-driven Intra Prediction CWG-E225: Wedge Mode Simplifications CWG-E238: Improved Partition Signaling at Frame Boundary and RDO Fixes CWG-E235: Warp-delta mode improvement CWG-E211: Simplification for Sub-block motion refinement CWG-E245: BAWP Block adaptive local weighted prediction CWG-E228: Support TIP in Low Delay CWG-E205: A Simplification for Chroma Transform (Disabled by default) CWG-E209 + E233: Improved signaling for compound inter prediction mode CWG-E188: Enhanced frame context initialization CWG-E151: IST improvement + CWG-E142: Non-normative speedup for IST CWG-E204: Memory Bandwidth Improvement for MV Refinement Methods + CWG-E226: 4x4 Warp Mode Constraints CWG-E092: Trellis Coded Quantization (8-state frame-adaptive) Encoder-only Changes -------------------- CWG-E171: Intra mode search adjustment # CWG-E186: Improve CDEF frame-level enabling decision CWG-E207: Encoder and decoder optimizations CWG-E191: Outside-frame-border block prediction and residual handling # CWG-E221: Improvement for deblocking filter (part 1) Code Cleanups / Improvements ---------------------------- Fix context memory analyzer Enable 4:2:2 and 4:4:4 chroma formats in AVM Analyzer Mismatch debug tool: increase max frame stride and height CWG-E120: Integrate the ParaKit training software to AVM CWG-E237: Fixes for across scale inter prediction Bugfixes -------- https://gitlab.com/AOMediaCodec/avm/-/milestones/12#tab-issues