Tags

Tags give the ability to mark specific points in history as being important

  • research-v14.1.0

    69d1b74a · Unit test for rps=1 verify frames output in ascending display_order_hint order · 
    Minor release including the following on top of v14.0.0.

High-level Syntax
-----------------
- CWG-G089 "On the bit-depth of order_hint"
- CWG-G094 "Bugfix for Output Order when Frames are Output at a
  Restricted Switch Frame”

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/19#tab-issues

  • research-v14.0.0

    e9965ce3 · TFLite build fix for XCode with clang 21 · 
    Research-v14.0.0 anchor.

Includes the following since the previous anchor:

Low-level Bugfixes
------------------
- Fix 4x32 and 32x4 quantization matrices to be consistent with AV1 subsampling
  scheme (related to CWG-F415)
- CWG-G003 "Bugfix for Coding Block Sizes in YUV 4:2:2 and Related Cleanup"

High-level Syntax
-----------------
- CWG-F408 "On levels for the AV2 specification"
- CWG-F447 "Dependency Map Mechanism and Metadata Persistence"
- CWG-F431 "HLS changes associated with pictures that are decoded but not used
  for display"
- CWG-F452 "Frame presentation time signalling"
- CWG-F359 "Buffer handling of frames with Global IBC and In-loop filters
  enabled"
- CWG-F444 "Bug Fix: Modify CICP constraint in the uncompressed header"
- CWG-F414 "On OBU extensibility and trailing bits"
- CWG-F438 "Remove incomplete metadata types"
- CWG-G007 "Identified unregistered user data metadata type"
- CWG-F441 "Support for higher frame rates in AV2"
- CWG-F440 "On Decoded Frame Hash Metadata"
- CWG-F436 "Temporal units in AV2" (remaining parts)
- CWG-F449 "FG15 recommendation on the presence of the MSDO, LCR and OPS in
  different profiles"
- CWG-G009 "Relocating restricted_prediction_switch to uncompressed header"
- CWG-G010 "Bug fixes for Buffer Removal Timing OBU"
- CWG-G018 "Tile resolution limits for AV2"
- CWG-G008 "Fixes for Level 7/8"
- CWG-F429 "On maximum layer capacity in OPS, LCR and SH"
- CWG-G004 "On 422 and 444 profiles indication"
- CWG-G028 "On frame level signaling of Intra-BC parameters"
- CWG-G024 "On CCSO and GDF unit sizes"
- CWG-F428 "On level constraints for AV2 specification"
- CWG-G036 "FGS parameters parsing bugfix"
- CWG-G033 "Enabling the use of signaled primary reference frame for
  segmentation map copying and temporal prediction."
- CWG-G031 "Bug fix to tile signalling"
- CWG-G034 "Update to identify the first key frame unit in the temporal unit"
- CWG-G023 "Necessity for easy profile determination in AV2"
- CWG-G026 "Bugfix when S Frames Refresh Multiple DPB Slots"
- CWG-F329 "AV2 constraints for decoding consistency across operating points"
- CWG-G040 "LCR Auxiliary Type Unspecified Range"
- CWG-G048 "On AV2 levels signaling"
- CWG-G032 "Extensibility of metadata payload for AV2"
- CWG-G055 "Make Temporal Delimiter OBUs Mandatory"
- CWG-G061 "On Frame Level Syntax of BRU Inactive Frames"
- CWG-G041 "Reset of quantization matrices to the default"
- CWG-G054 "Bug Fix When Multiple Embedded Layers Exist"
- CWG-G043 "Constraints on Restricted Switch Frames Within a Temporal Unit"
- CWG-G070 "Indication for random access switch frames" (Aspects 1 and 2)
- CWG-G067 "On OLK random access with long term refs"
- CWG-G071 "Restricted Switch / RAS Frame Behavior with Multiple Embedded Layers"
- TU definition and extended layer
- CWG-G062 "AV2 Multistream: The Case for Aligned Temporal Units Only"
- CWG-G060 "Encoder-side banding detection for the banding metadata"
- CWG-G077 "Requirement for display order hint"
- CWG-G075 "On AV2 profiles and interoperability points"
- CWG-G078 "On AV2 Profiles Maximum Bitrate and Minimum Compression Ratio"

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- Optimize fill_directional_feature_buffers_highbd_avx2()
- Separate av2_build_intra_predictors_high() to handle  mrl_index = 0
- Add AVX2 for refinemv_highbd_pad_mc_border for b_w = 23,31
- Enable row-level multithreading support for TIP in decoder
- Add AVX2 for mhccp_implicit_fetch_neighbor

Code Cleanups
-------------
- Removal of the compile time flags
- Misc code cleanup
- Add multilayer unit tests
- Add unit tests for multiple sequence headers
- Add unit tests for switch frames
- Add tests to ensure explicitly signaled temporal delimiters (TDs) work
  correctly.
- CWG-G014 "AV2 Coefficient Coding Spec-SW Analysis and Fixes"
- Add tune=vmaf support
- Remove legacy analyzer from AV1.
- TCQ SW cleanup
- More elegant code for MV compression and decompression
- Add tests for RAS frames
- CWG-G079 "Refactoring of entropy coding tables"
- CWG-G087 "Refactoring PARA Parameters in Entropy Coding Tables"

Gitlab CI Improvements
----------------------
- Gitlab CI: Add mechanism to auto-retry jobs that fail due to OOM issues

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/18#tab-issues

  • research-v13.0.0

    f25e5ac2 · Add `avm` or `av2` prefix to a few more symbols · 
    Research-v13.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-F381 "Bugfix for CfL modes with large block sizes”
- CWG-F387 “Training of the context initialization tables”
- CWG-F389 "Fix Coeff Precision after TCQ" (solution 2)
- CWG-F393 “DIP Context Initialization Fix”
- CWG-F400 "BugFix of Warp Modes"
- CWG-F401 "Handling of Refined MV and Reference Padding in Sub-8x8 Chroma"
- Deblock filter sub-PU boundaries for OPFL chroma and for DMVR 16×8 and 8×16 cases
- CWG-F406 "Bug fix for WARP_CAUSAL mode"
- CWG-F426 "Deblocking issues cleanup"
- CWG-F425 "Remove offset-based refinement of intra prediction (ORIP)"
- CWG-F416 "Guided Detail Filter: Gradient Sample Support”
- CWG-F415 "Quantization Matrix Changes"
- CWG-F421 "Intra BAWP condition checks"
- Revert the aspect 4 in F303 for MHCCP division

High-level Syntax
-----------------
- CWG-F233 “Picture struct and Scan type metadata”
- CWG-F255 "Quantization matrix OBU”
- CWG-F153 "Film grain model OBU"
- CWG-F024 “New Key Frame OBUs in AVM”
- CWG-F377 "Sequence Header OBU Changes for reduced_still_picture_header"
- CWG-F356 "Clarification for the show existing frame obu"
- CONFIG_MULTI_LEVEL_SEGMENTATION implementation (Follow-up for CWG-E242)
- Add LCR, Atlas id in the SH and its activation (harmonization of previous proposals)
- CWG-F405 "Removal of Redundant Tile-related Information Signaling in TIP Direct Output Mode”
- CWG-F395 "On the signaling of cross frame CDF initialization"
- CWG-F412 "On sequence header coding tool parameters grouping"
- CWG-F418 "A cleanup of frame level signaling”
- CWG-F419 "On the frame level signaling of the screen content and Intra-BC parameters"
- CWG-F411 "Alpha signalling in the multistream atlas metadata"
- CWG-F417 "More Sequence Header OBU Changes for single_picture_header_flag"
- CWG-F402 "Modifications to the sequence header”
- CWG-F432 "Resolving FGS dependency on CI OBU”
- CWG-F427 "On the signaling of the sequencer header identifier in a bridge frame OBU”
- CWG-F433 "Sequence Header Syntax Reorganization"
- CWG-F430 "On Temporal Point Info Metadata”
- CWG-F322 "Restricted Switch OBU”
- CWG-F270 "Content Interpretation OBU"
- CWG-F446 “Signalling Film Grain Parameters”
- CWG-F436 "Temporal units in AV2" (some parts)

Encoder-only Improvements (Non-normative)
-----------------------------------------
- CWG-F410 “Encoder-only: Transform Partition Search Improvement for Inter Blocks”
- CWG-F383 "Pyramid Quantization Offsets Adjustment for AVM in LD mode"

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- Add AVX2 for mhccp_predict_hv_hbd()
- Enable row multi-threading by default in decoder
- Enable CDEF and CCSO MT
- Improve and enable Loop restoration frame MT
- Remove redundant memset of mhccp_ref_buf_q3 buffer
- Add frame level lossless check to CDEF and loop filter
- Add AVX2 for mhccp_derive_multi_param_hv()
- Add AVX2 for refinemv_highbd_pad_mc_border for b_w = 11
- Optimize ccso_pre_compute_class_err()
- Optimize AVX2 of av2_highbd_dist_wtd_convolve_2d()
- Optimize av2_opfl_mv_refinement_nxn() for block width 8

Code Cleanups
-------------
- intrapred: remove unused upsample_above/left variables/params
- Unused code cleanup
- CWG-F407 “Code Cleanup: Symbol Renaming in AVM”
- Removal of the compile time flags

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/17#tab-issues

High-level Syntax tools NOT included in this anchor (but will be included in next anchor)
-----------------------------------------------------------------------------------------
- CWG-F428 "On level constraints for AV2 specification"
- CWG-F408 "On levels for the AV2 specification" (aspects A, B, F)
- CWG-F431 "HLS changes associated with pictures that are decoded but not used for display"
- CWG-F359 "Buffer handling of frames with Global IBC and In-loop filters enabled”
- CWG-F429 "On maximum layer capacity in OPS, LCR and SH"
- CWG-F436 "Temporal units in AV2"  (some parts)
- CWG-F438 "Remove incomplete metadata types"
- CWG-F414 "On OBU extensibility and trailing bits"
- CWG-F440 "On Decoded Frame Hash Metadata"
- CWG-F441 "Support for higher frame rates in AV2"
- CWG-F447 “Dependency Map Mechanism and Metadata Persistence”
- CWG-F444 “Bug Fix: Modify CICP constraint in the uncompressed header”
- CWG-F449 “FG15 recommendation on the presence of the MSDO, LCR and OPS in different profiles”

  • research-v12.0.0

    069d53c4 · Use correct maximum value for MAX_OPS_COUNT · 
    Research-v12.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-F332 "On 64x64 Transform Block Coding Order"  (turn on by default)
- CWG-F284 "Deblocking DQP control" (turn on by default)
- CWG-F334 "Decoder-Side Normative Constraint on Motion Vector Values"
- CWG-F336 "Bugfix for 4x4 Warp Padding"
- CWG-F338 "Block size constraint for MHCCP"
- CWG-F344 "GDF padding alignment with LR"
- CWG-F265 Part 1 "On disabling loop-filters across tile-boundaries" (Test 2)
  (turn on by default)
- CWG-F265 Part 2 "On disabling loop-filters across lossless segments" (turn on
  by default)
- CWG-F348 "On high level signaling of motion modes"
- CWG-F353 "Decoder-side Constraints on Intra BAWP”
- CWG-F266 “On 64-Point Transform” (option 2, Test1)
- CWG-F354 “Uniform tile distribution”
- CWG-F371 “RU size restriction based on super_block size”
- CWG-F370 “Bitstream Constraint on Inter BAWP mode”
- CWG-F365 "On Optical Flow Auto Mode" (Test 2)
- CWG-F303 "On Division Handling" (DC Pred aspect)
- CWG-F374 "MHCCP bitdepth constraints" (Test 1)
- CWG-F380 "Bugfix for IntraBC Local Search Range on Frame Boundary”
- CWG-F300 update "enable_idtx_intra sequence level flag”

High-level Syntax
-----------------
- CWG-F298 Test A.1 “Multi-Frame Header” (from CWG-F070)
- CWG-F298 Test A.2 “Removal of redundant frame header” (from CWG-F097)
- CWG-F298 A.3 Introduce sequence header ID” (from CWG-E242)
- CWG-F298 A.7 “Rename the reduced_still_picture_hdr_flag” (from CWG-E242)
- CWG-F298 A.9 “Signal bitdepth with a UVLC code and LUT” (from CWG-E242)
- CWG-F298 A.10 “Signal tile information at sequence, multi-frame and frame
  level” (from CWG-E242)
- CWG-F298 A.11 “Scaling function improvements for film grain synthesis” (from
  CWG-F109)
- CWG-F298 A.15 + A.18 “uvlc() for mfh_id and mfh_id_in_frame_header”
- CWG-F298 Test B “Introduce chroma_format_idc” (from CWG-E242)
- CWG-F298 Test C “Use Tilegroup OBU, add Switch OBU, SEF OBU, and TIP OBU”
  (from CWG-F106)
- CWG-F298 Test E “Parsing independence on the Multi Frame header” (from
  CWG-E242)
- CWG-F298 Test G “Extension of frame buffer pool size” (from CWG-F172)
- CWG-F298 Test L “Random Access Switch frame” (from CWG-F147 and CWG-F231)
- CWG-F298 Test M “Temporal unit update” (from CWG-F232)
- CWG-F298 Test R “On the signaling of multi-view, multi-layer and multi-stream
  information” (from CWG-F221)
- CWG-F298 Test S “Render size signalling and derivation” (from CWG-F248)
- CWG-F220 "Sequence Cropping Window”
- CWG-F293 “Buffer Removal Timing Info OBU”
- CWG-F342 "Making multi-frame header OBU optional"
- CWG-F317 "An approach to increase the reference picture resolution
  constraints"
- CWG-F318 "Guided debanding metadata”
- CWG-F350 "On the interaction between the AVM output marking process and
  multi-layer coding"
- CWG-F362 "AV2 HLS: implicit frame tool flags for reduced still pictures”
- CWG-F367 "On OBU ordering in TU”
- CWG-F322 "On Switch and Error Resilient Frames" (Aspects 2.1, 2.2, 2.3.5 and
  2.4)
- CWG-F341 “On the xlayer_id value”
- CWG-F349 "Signaling improvements for tile configuration in frame header"
- CWG-F160 "Optional Temporal Unit Delimiters"
- CWG-F369 "Short metadata header"
- CWG-F364 "background color information in the atlas obu"
- CWG-F220 "Sequence Cropping Window”
- CWG-F298 Test F “Reorder sequence header flags” (from CWG-E242)
- CWG-F298 Test U “Adding metadata support” (from CWG-E195 and CWG-F161)

Encoder-only Improvements (Non-normative)
-----------------------------------------
- CWG-F347 "Further Improvement of model RD based inter mode decision of AVM
  random access configuration" (Test 2)

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- Do not initialize wedge masks until the first inter frame
- Non-normative improvements in CDEF, LR, CCSO and inv_txfm
- DIP: Add AVX2 optimization for `resample_output`
- CFL: Add new SIMD functions for CFL downsampling functions.
- Enable row-level multithreading support for CDEF frame in decoder
- Add AVX2 for refinemv_highbd_pad_mc_border
- Optimize set_lpf_parameters() function

Code Cleanups
-------------
- CWG-F366: Removal of Compile-time Macros
- CWG-F058: Remove large scale tile code

Gitlab CI Improvements
----------------------
- Wiki section on running large tests from Nightly CI
- Speed-up some unit tests in CI
- Add build check for bitstream and mismatch debug tools

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/16#tab-issues

  • research-v12.0.0-rc1

    7d7c3f0f · Removal of CONFIG_CWG_F168_DPB_HLS · 
    Release candidate #1 for Research-v12.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-F332 "On 64x64 Transform Block Coding Order"  (turn on by default)
- CWG-F284 "Deblocking DQP control" (turn on by default)
- CWG-F334 "Decoder-Side Normative Constraint on Motion Vector Values"
- CWG-F336 "Bugfix for 4x4 Warp Padding"
- CWG-F338 "Block size constraint for MHCCP"
- CWG-F344 "GDF padding alignment with LR"
- CWG-F265 Part 1 "On disabling loop-filters across tile-boundaries" (Test 2)
  (turn on by default)
- CWG-F265 Part 2 "On disabling loop-filters across lossless segments" (turn on
  by default)
- CWG-F348 "On high level signaling of motion modes"
- CWG-F353 "Decoder-side Constraints on Intra BAWP”
- CWG-F266 “On 64-Point Transform” (option 2, Test1)
- CWG-F354 “Uniform tile distribution”
- CWG-F371 “RU size restriction based on super_block size”
- CWG-F370 “Bitstream Constraint on Inter BAWP mode”
- CWG-F365 "On Optical Flow Auto Mode" (Test 2)
- CWG-F303 "On Division Handling" (DC Pred aspect)
- CWG-F374 "MHCCP bitdepth constraints" (Test 1)
- CWG-F380 "Bugfix for IntraBC Local Search Range on Frame Boundary”
- CWG-F300 update "enable_idtx_intra sequence level flag”

High-level Syntax
-----------------
- CWG-F298 Test A.1 “Multi-Frame Header” (from CWG-F070)
- CWG-F298 Test A.2 “Removal of redundant frame header” (from CWG-F097)
- CWG-F298 A.3 Introduce sequence header ID” (from CWG-E242)
- CWG-F298 A.7 “Rename the reduced_still_picture_hdr_flag” (from CWG-E242)
- CWG-F298 A.9 “Signal bitdepth with a UVLC code and LUT” (from CWG-E242)
- CWG-F298 A.10 “Signal tile information at sequence, multi-frame and frame
  level” (from CWG-E242)
- CWG-F298 A.11 “Scaling function improvements for film grain synthesis” (from
  CWG-F109)
- CWG-F298 A.15 + A.18 “uvlc() for mfh_id and mfh_id_in_frame_header”
- CWG-F298 Test B “Introduce chroma_format_idc” (from CWG-E242)
- CWG-F298 Test C “Use Tilegroup OBU, add Switch OBU, SEF OBU, and TIP OBU”
  (from CWG-F106)
- CWG-F298 Test E “Parsing independence on the Multi Frame header” (from
  CWG-E242)
- CWG-F298 Test G “Extension of frame buffer pool size” (from CWG-F172)
- CWG-F298 Test L “Random Access Switch frame” (from CWG-F147 and CWG-F231)
- CWG-F298 Test M “Temporal unit update” (from CWG-F232)
- CWG-F298 Test R “On the signaling of multi-view, multi-layer and multi-stream
  information” (from CWG-F221)
- CWG-F298 Test S “Render size signalling and derivation” (from CWG-F248)
- CWG-F220 "Sequence Cropping Window”
- CWG-F293 “Buffer Removal Timing Info OBU”
- CWG-F342 "Making multi-frame header OBU optional"
- CWG-F317 "An approach to increase the reference picture resolution
  constraints"
- CWG-F318 "Guided debanding metadata”
- CWG-F350 "On the interaction between the AVM output marking process and
  multi-layer coding"
- CWG-F362 "AV2 HLS: implicit frame tool flags for reduced still pictures”
- CWG-F367 "On OBU ordering in TU”
- CWG-F322 "On Switch and Error Resilient Frames" (Aspects 2.1, 2.2, 2.3.5 and
  2.4)
- CWG-F341 “On the xlayer_id value”
- CWG-F349 "Signaling improvements for tile configuration in frame header"
- CWG-F160 "Optional Temporal Unit Delimiters"
- CWG-F369 "Short metadata header"
- CWG-F364 "background color information in the atlas obu"

Encoder-only Improvements (Non-normative)
-----------------------------------------
- CWG-F347 "Further Improvement of model RD based inter mode decision of AVM
  random access configuration" (Test 2)

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- Do not initialize wedge masks until the first inter frame
- Non-normative improvements in CDEF, LR, CCSO and inv_txfm
- DIP: Add AVX2 optimization for `resample_output`

Code Cleanups
-------------
- CWG-F366: Removal of Compile-time Macros
- CWG-F058: Remove large scale tile code

Gitlab CI Improvements
----------------------
- Wiki section on running large tests from Nightly CI
- Speed-up some unit tests in CI

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/16#tab-issues

  • research-v11.0.0

    3a5da21a · Initialize quantization matrix only when it is used · 
    Research-v11.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-F141 Part 1 "Removal of AV1 Separable Wiener filter"
- CWG-F176 "CCSO reuse reference frame index signaling improvement"
- CWG-D130 "Quantization Matrices Coding for AV2"
- CWG-F195 "Warp parameter range clamp unification"
- CWG-F164 "Intra SDP logic simplification"
- CWG-F185 "Only write TMVP MVs once"
- CWG-F183 "Enhanced parsing dependency removal and simplification of skip mode"
- CWG-F157 "On addressing SDP-CFL latency"
- CWG-F192 "Improved TIP Frame Filtering"
- CWG-F196 "Disable DMVR in TIP-direct frame build"
- CWG-F135 "Chroma Extension of CWG-F110 (Lossless Transform Coding)"
- CWG-F184 "Context Modeling Line Buffer Reduction"
- CWG-F216 "Simplification of Warp Reference List (WRL) for All Warp Modes"
- CWG-F242 "Optimized Signaling of Quantization Matrices"
- CWG-F142 "Extension of the Motion Vector Range"
- CWG-F203 "Context Reduction of CCTX"
- CWG-F107 "Fix OPFL issues and remove DAMR"
- CWG-F063 "Add partition block aspect ratio constraint"
- CWG-F236 "Extend TCQ to All Frames"
- CWG-F139 "Removal of Filter-Intra Prediction Mode"
- CWG-F129 "WRL Improvements"
- CWG-F194 "Optimized Signaling of Global Motion Vector for TIP Direct Output Mode"
- CWG-F182 "Addressing chroma prediction type delay in chroma merge area"
- CWG-F170 "Bugfix for optical flow refinement auto mode"
- CWG-F137 "Simplification for Blending Mode"
- CWG-F226 "Context reductions for Palette mode"
- CWG-F177 "IntraBC Local Search Range Alignment" (Method B)
- CWG-F193 "Bugfix for warp causal mode" (Method 2)
- CWG-F247 "Warp Extend Simplification" (Method 1)
- CWG-F240 "Coding Tools for Picture Resizing Mode"
- CWG-F141 Part 2 "Removal of AV1 Self-Guided Filter"
- CWG-F208 "Enable Local Compound Warp Mode for AVM-v11" (Test 3.2 + no line buffer increase)
- CWG-F249 "On Writing Delay Mechanism of Global IntraBC" (Method 2)
- CWG-F246 "Adaptive optical flow based motion vector refinement in TIP-direct mode"
- CWG-F218 "Results of the FG8 activity on context modeling simplifications" (CT8)
- CWG-F124 "CCSO Clean Up"
- CWG-F165 "Improvement for IntraBC in key frames" (Test 2 +  check the local IBC range with BAWP)
- CWG-F187 "Guided Detail Filter: Improvements" (Test 3)
- CWG-F206 "On Dynamic Reference List (DRL) size"
- CWG-F258 "Add a reduced ref_frame_mvs mode sequence flag"
- CWG-F302 "Reduction of Optical Flow Multiplications"
- CWG-F280 "Removal of WARPMV WARP_CAUSAL"
- CWG-F268 "Low-level changes for Multilayer Coding in AV2"
- CWG-F262 "Larger Identity Transforms for Lossless Coding"
- CWG-F241 "Dynamic Reference List (DRL) Pruning Limitation"
- CWG-F238 "On frame MV precision" (Test1)
- CWG-F202 "Simplification for ORIP"
- CWG-F303 "On Division Handling" (Aspect 1 and 4)
- CWG-F140 "Extension to reduced transform set" (set 1, 2 and 4)
- CWG-F297 "Guided Detail Filter: Improvements 2" (Aspects 1, 2 and 3)
- CWG-F283 "Deblocking Filter Chroma Line Buffer Fix"
- CWG-F285 "Parsing Dependency Reduction for Warp Causal mode"
- CWG-F252 "Reference Sample Reduction and Sequence Level Flag Addition for MHCCP" (Aspect 1 + 2 + issue fix, All chroma formats)
- CWG-F171 "Parsing dependency removal for coefficient related syntax" (retrained param version)
- CWG-F079 "Film grain synthesis improvements for AVM"  (64x64 template + switch between 16x16/32x32 block size)
- CWG-F278 "Flexible TIP block size decision"
- CWG-F235 "Remove Palette Mode for Chroma"
- CWG-F300 "Switchable Residual Coding for Identity Transform (IDTX)/Forward Skip Coding (FSC) Mode"
- CWG-F271 "On Reference Ranking in Resize Mode"
- CWG-F069 "On the Maximum Number of Segments"
- CWG-F290 "Further simplifications to TMVP and MV trajectory"
- CWG-F315 "Signaling improvements for max_drl_bits in frame header"
- CWG-F296 "On Block Partition Entropy Context Line Buffer"
- CWG-F178 "Large Transform for Chroma" (Test 0e,1e)
- CWG-F143 "Adaptive wedge boundary" (Scheme 1)
- CWG-F191 "Symbol size reduction for intra mode, EOB and inter transform type signaling"
- CWG-F273 "Reduced Transform Block Partition"
- CWG-F266 "On 64-Point Transform"  (off by default)
- CWG-F284 "Deblocking DQP control" (off by default)
- CWG-F287 "Extended motion vector predictor"
- CWG-F265 "On disabling loop-filters across tile-boundaries and for lossless segments" (off by default)
- CWG-F332 "On 64x64 Transform Block Coding Order" (off by default)

High-level Syntax
-----------------
- CWG-F298 Test I (CWG-E113)
- CWG-F298 Test J (CWG-F168)
- CWG-F298 Test K (CWG-F215)
- CWG-F298 Test N (one aspect of CWG-F243)
- CWG-F298 Test O (one aspect of CWG-F243)
- CWG-F298 Test P (one aspect of CWG-F260)
- CWG-F298 Test Q (CWG-F253)
- CWG-F301 "Optionally One-Byte OBU Header"  (Includes CWG-F159)
- CWG-F311 "Splitting qm_params() Out of quantization_params()"
- CWG-F313 "user_defined_qm() should update quant if qm_8x8_is_symmetric is 1"
- CWG-F261 "Improvement of BRU High Level Syntax"
- CWG-F307 "Add sequence level flag for CfL on top of CWG-F252"
- Move obu_extension_flag to most significant bit
- Change obu_type and obu_tlayer_id to f(5) and f(2)

Encoder-only Improvements (Non-normative)
-----------------------------------------
- CWG-F222 "Enabling global Intra-BC in key-frames of natural content coding"
- CWG-F279 "Pyramid Quantization Offsets Adjustment for AVM in RA mode"

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- Enable multi-threading for sub-PU deblocking
- CWG-E158 "Encoder speed up using ML-based Partition Pruning, inter frames, improvements"  (off by default)
- CWG-F230 "Software Decoder Speed Optimizations"
- Non-normative decoder speed optimizations
- Initialize quantization matrix only when it is used

Code Cleanups
-------------
- Removal of Compile-time Macros (CWG-F234)
- Addition of Run-time flags for skip mode and transform partitioning

Gitlab CI Improvements
----------------------
- Fix code coverage report generation
- When building documentation, treat warnings as errors
- Update to GCC 14 and LLVM 18
- Run unit tests under memory sanitizer

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/15#tab-issues

  • research-v11.0.0-rc1

    fafa7128 · Improve comment for aom_decode_frame_from_obus() · 
    Release candidate #1 for Research-v11.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-F141 Part 1 "Removal of AV1 Separable Wiener filter"
- CWG-F176 "CCSO reuse reference frame index signaling improvement"
- CWG-D130 "Quantization Matrices Coding for AV2"
- CWG-F195 "Warp parameter range clamp unification"
- CWG-F164 "Intra SDP logic simplification"
- CWG-F185 "Only write TMVP MVs once"
- CWG-F183 "Enhanced parsing dependency removal and simplification of skip mode"
- CWG-F157 "On addressing SDP-CFL latency"
- CWG-F192 "Improved TIP Frame Filtering"
- CWG-F196 "Disable DMVR in TIP-direct frame build"
- CWG-F135 "Chroma Extension of CWG-F110 (Lossless Transform Coding)"
- CWG-F184 "Context Modeling Line Buffer Reduction"
- CWG-F216 "Simplification of Warp Reference List (WRL) for All Warp Modes"
- CWG-F242 "Optimized Signaling of Quantization Matrices"
- CWG-F142 "Extension of the Motion Vector Range"
- CWG-F203 "Context Reduction of CCTX"
- CWG-F107 "Fix OPFL issues and remove DAMR"
- CWG-F063 "Add partition block aspect ratio constraint"
- CWG-F236 "Extend TCQ to All Frames"
- CWG-F139 "Removal of Filter-Intra Prediction Mode"
- CWG-F129 "WRL Improvements"
- CWG-F194 "Optimized Signaling of Global Motion Vector for TIP Direct Output Mode"
- CWG-F182 "Addressing chroma prediction type delay in chroma merge area"
- CWG-F170 "Bugfix for optical flow refinement auto mode"
- CWG-F137 "Simplification for Blending Mode"
- CWG-F226 "Context reductions for Palette mode"
- CWG-F177 "IntraBC Local Search Range Alignment" (Method B)
- CWG-F193 "Bugfix for warp causal mode" (Method 2)
- CWG-F247 "Warp Extend Simplification" (Method 1)
- CWG-F240 "Coding Tools for Picture Resizing Mode"
- CWG-F141 Part 2 "Removal of AV1 Self-Guided Filter"
- CWG-F208 "Enable Local Compound Warp Mode for AVM-v11" (Test 3.2 + no line buffer increase)
- CWG-F249 "On Writing Delay Mechanism of Global IntraBC" (Method 2)
- CWG-F246 "Adaptive optical flow based motion vector refinement in TIP-direct mode"
- CWG-F218 "Results of the FG8 activity on context modeling simplifications" (CT8)
- CWG-F124 "CCSO Clean Up"
- CWG-F165 "Improvement for IntraBC in key frames" (Test 2 +  check the local IBC range with BAWP)
- CWG-F187 "Guided Detail Filter: Improvements" (Test 3)
- CWG-F206 "On Dynamic Reference List (DRL) size"
- CWG-F258 "Add a reduced ref_frame_mvs mode sequence flag"
- CWG-F302 "Reduction of Optical Flow Multiplications"
- CWG-F280 "Removal of WARPMV WARP_CAUSAL"
- CWG-F268 "Low-level changes for Multilayer Coding in AV2"
- CWG-F262 "Larger Identity Transforms for Lossless Coding"
- CWG-F241 "Dynamic Reference List (DRL) Pruning Limitation"
- CWG-F238 "On frame MV precision" (Test1)
- CWG-F202 "Simplification for ORIP"
- CWG-F303 "On Division Handling" (Aspect 1 and 4)
- CWG-F140 "Extension to reduced transform set" (set 1, 2 and 4)
- CWG-F297 "Guided Detail Filter: Improvements 2" (Aspects 1, 2 and 3)
- CWG-F283 "Deblocking Filter Chroma Line Buffer Fix"
- CWG-F285 "Parsing Dependency Reduction for Warp Causal mode"
- CWG-F252 "Reference Sample Reduction and Sequence Level Flag Addition for MHCCP" (Aspect 1 + 2 + issue fix, All chroma formats)
- CWG-F171 "Parsing dependency removal for coefficient related syntax" (retrained param version)
- CWG-F079 "Film grain synthesis improvements for AVM"  (64x64 template + switch between 16x16/32x32 block size)
- CWG-F278 "Flexible TIP block size decision"
- CWG-F235 "Remove Palette Mode for Chroma"
- CWG-F300 "Switchable Residual Coding for Identity Transform (IDTX)/Forward Skip Coding (FSC) Mode"
- CWG-F271 "On Reference Ranking in Resize Mode"
- CWG-F069 "On the Maximum Number of Segments"
- CWG-F290 "Further simplifications to TMVP and MV trajectory"
- CWG-F315 "Signaling improvements for max_drl_bits in frame header"
- CWG-F296 "On Block Partition Entropy Context Line Buffer"
- CWG-F178 "Large Transform for Chroma" (Test 0e,1e)
- CWG-F143 "Adaptive wedge boundary" (Scheme 1)
- CWG-F191 "Symbol size reduction for intra mode, EOB and inter transform type signaling"
- CWG-F273 "Reduced Transform Block Partition"
- CWG-F266 "On 64-Point Transform"  (off by default)
- CWG-F284 "Deblocking DQP control" (off by default)
- CWG-F287 "Extended motion vector predictor"
- CWG-F265 "On disabling loop-filters across tile-boundaries and for lossless segments" (off by default)
- CWG-F332 "On 64x64 Transform Block Coding Order" (off by default)

High-level Syntax
-----------------
- CWG-F298 Test I (CWG-E113)
- CWG-F298 Test J (CWG-F168)
- CWG-F298 Test K (CWG-F215)
- CWG-F298 Test N (one aspect of CWG-F243)
- CWG-F298 Test O (one aspect of CWG-F243)
- CWG-F298 Test P (one aspect of CWG-F260)
- CWG-F298 Test Q (CWG-F253)
- CWG-F301 "Optionally One-Byte OBU Header"  (Includes CWG-F159)
- CWG-F311 "Splitting qm_params() Out of quantization_params()"
- CWG-F313 "user_defined_qm() should update quant if qm_8x8_is_symmetric is 1"
- CWG-F261 "Improvement of BRU High Level Syntax"
- CWG-F307 "Add sequence level flag for CfL on top of CWG-F252"
- Move obu_extension_flag to most significant bit
- Change obu_type and obu_tlayer_id to f(5) and f(2)

Encoder-only Improvements (Non-normative)
-----------------------------------------
- CWG-F222 "Enabling global Intra-BC in key-frames of natural content coding"
- CWG-F279 "Pyramid Quantization Offsets Adjustment for AVM in RA mode"

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- Enable multi-threading for sub-PU deblocking
- CWG-E158 "Encoder speed up using ML-based Partition Pruning, inter frames, improvements"  (off by default)
- CWG-F230 "Software Decoder Speed Optimizations"
- Non-normative decoder speed optimizations

Code Cleanups
-------------
- Removal of Compile-time Macros (CWG-F234)
- Addition of Run-time flags for skip mode and transform partitioning

Gitlab CI Improvements
----------------------
- Fix code coverage report generation
- When building documentation, treat warnings as errors
- Update to GCC 14 and LLVM 18
- Run unit tests under memory sanitizer

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/15#tab-issues

  • research-v10.0.1

    fb5e5715 · bitstream.c: Remove duplicate av1/common/blockd.h · 
    Minor release including following bugfixes on top of v10.0.0.

https://gitlab.com/AOMediaCodec/avm/-/milestones/14#tab-issues

  • research-v10.0.0

    331ab629 · CI: Use `--psnr` arg for all `Enc Run` jobs · 
    Research-v10.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-F009: No-show key frame and key overlay frame
- CWG-E255: IDIF Intra Directional Interpolation Filter Fix
- CWG-F017: Redesign of the warp mode signaling flow
- CWG-F018: CDEF Enhancements
- CWG-F008: Enabling in-loop filtering with global intra-block-copy
  (Intra-BC)
- CWG-F019: Simplification of luma downsampling in the CFL mode
- CWG-F052: Remove OBMC
- CWG-F055: Non-separable luma wiener filters with 9x9 support (16-tap)
- CWG-F037: CDF Scaling Improvement
- CWG-F035: Disable IBP and ORIP for 4x4 only
- CWG-F034: Multiple Reference Line Selection (MRLS) Improvement (Test3)
- CWG-F057: On Flexible Control of the Deblocking Parameter Bit Depth
- CWG-F075: TMVP Motion Vector Memory Reduction
- CWG-F007: Improved scanning order for DRL list generation
- CWG-F050: DRL and WRL Line Buffer Reduction
- CWG-F045: Improved frame context initialization
- CWG-F086: Simplify MHCCP convolve
- CWG-F072: Improved Primary Reference Frame Selection
- CWG-F021: MHCCP design for superblock boundary
- CWG-F105: Combination of CWG-F012 and CWG-F056 for IST memory
  reduction
- CWG-F033: Disable Inter Modes for 4x4 Partition Blocks
- CWG-F089: Delta-q Entropy Coding Optimization
- CWG-F080: Transform Partition Restriction and Encoder Speed-up
- CWG-F064: Improvements in refined MVs and EXT-WARP
- CWG-F065: Modification of DMVR search points
- CWG-F076: Simplifications for context modeling: A data-driven approach
  (Test 1 and Test 3)
- CWG-F084: Simplifications for intra BAWP (Aspect 1)
- CWG-E229: Sample reduction for MHCCP model derivation
- CWG-F069: On the Maximum Number of Segments
- CWG-F115: Table size reduction for CCSO
- CWG-F044: On warp mode of AVM (disabled in LD)
- CWG-F120: On Intra Bi-Prediction
- CWG-E230: On Core Transform for AV2
- CWG-F101: On luma downsampling of cross-plane wiener restoration
  filter
- CWG-F092: TMVP Simplification (Test2)
- CWG-F113: Improvements for MHCCP
- CWG-F061: Symbol size reduction for wedge angle and joint shell class
  signaling
- CWG-F059: Re-Design of Partition Symbol Context Models
- CWG-F111: On DAMR Memory Bandwidth
- CWG-F068: Bugfix of CCSO filtering unit size for 4:2:2 and 4:4:4
- CWG-D181: On block-adaptive weighted prediction for across scale
  prediction (BAWP + RPR disabled by default)
- CWG-F130: Bugfix for Local IntraBC Search Range under non Common Test
  Condition
- CWG-E121: Enhancements of reference frame list construction for
  temporal scalability
- CWG-F121: Simplification for IDIF (Test 2)
- CWG-F085: Improvements to motion vector trajectory tracking
- CWG-F099: Modified deblocking filter for AVM
- CWG-F128: Context Model Optimization for Optical Flow Refinement Flag
- CWG-F096: Removal of Super Resolution Mode
- CWG-F144: On the Interaction Between Uneven Transform Partitioning and
  Sub-Block Deblocking
- CWG-F087: Precision Adjustment and Retraining for RESTORE_PC_WIENER
- CWG-F116: Improvements in storing MVs for TMVP list
- CWG-F051: TIP Simplification
- CWG-F146: Transform partition type replacement
- CWG-F088: MHCCP with 3 Parameters
- CWG-F078: Inter coding mode redesign and consolidation
- CWG-F127: Reduction of CDFs of MVD coding
- CWG-E254: TIP Enhancement
- CWG-F093: Improvements to Data-Driven Intra Prediction
- CWG-F043: Improved SMVP for TIP mode candidates
- CWG-F082: Extended DPB mode for AV2 in RTC
- CWG-F119: On skip mode parsing dependency
- CWG-F054: Picture boundary handling for loop filtering (HW SG
  recommended version)
- CWG-F110: Enhanced Transform Coding for Lossless AVM (Aspects 1 and 2
  with Option 1)
- CWG-F112: Amendment to EXT_QUANT:  Add seq-level base uv ac offset and
  misc flags
- CWG-E206: Guided Detail Filter - r3
- CWG-E127: BRU: Backward Reference Updating for Ultra Low Latency Video
  Coding

Other Normative Changes
-----------------------
- Enable virtual line buffer for cross-component non-separable wiener
  filter
- CWG-E066: Interleaved parsing at 64x64 level with SDP in key frames
  (missing part from previous cycle)

Encoder-only Improvements (Non-normative)
-----------------------------------------
- CWG-F002: Intra-BC decision bug fix for natural content
- CWG-E251: An encoder side improvement for extended SDP
- Disable frame averaging and enable tile averaging for context
  initialization when the number of tiles is 2.
- Fix bug disabling PC_WIENER in search_pc_wiener_visitor.
- CWG-F136: TCQ Improvements
- CWG-F163: CTC for AVM resize-mode

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- SIMD for DIP
- Speed-up decoder by optimizing refinemv_highbd_pad_mc_border function
- CWG-F049: AVM v9 encoder and decoder optimizations
- CWG-F073: Improved model RD based transform pruning of inter modes
- CWG-F118: Inter mode evaluation optimization
- CWG-F011: Simplification of Palette Mode (Aspect 1)
- CWG-F046: Encoder speed up using ML-based Partition Pruning,
  additional speedup

Code Cleanups
-------------
- CWG-F094 Research v10.0.0 anchor:  Removal and Merging of Compile Time
  Flags
- Suppress TFLite compile time warnings
- Suppress TFLite runtime logs

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/13#tab-issues

  • research-v10.0.0-rc1

    c9e28fd9 · ForwardKeyTestLarge: tweak PSNR threshold · 
    Release candidate #1 for Research-v10.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-F009: No-show key frame and key overlay frame
- CWG-E255: IDIF Intra Directional Interpolation Filter Fix
- CWG-F017: Redesign of the warp mode signaling flow
- CWG-F018: CDEF Enhancements
- CWG-F008: Enabling in-loop filtering with global intra-block-copy (Intra-BC)
- CWG-F019: Simplification of luma downsampling in the CFL mode
- CWG-F052: Remove OBMC
- CWG-F055: Non-separable luma wiener filters with 9x9 support (16-tap)
- CWG-F037: CDF Scaling Improvement
- CWG-F035: Disable IBP and ORIP for 4x4 only
- CWG-F034: Multiple Reference Line Selection (MRLS) Improvement (Test3)
- CWG-F057: On Flexible Control of the Deblocking Parameter Bit Depth
- CWG-F075: TMVP Motion Vector Memory Reduction
- CWG-F007: Improved scanning order for DRL list generation
- CWG-F050: DRL and WRL Line Buffer Reduction
- CWG-F045: Improved frame context initialization
- CWG-F086: Simplify MHCCP convolve
- CWG-F072: Improved Primary Reference Frame Selection
- CWG-F021: MHCCP design for superblock boundary
- CWG-F105: Combination of CWG-F012 and CWG-F056 for IST memory reduction
- CWG-F033: Disable Inter Modes for 4x4 Partition Blocks
- CWG-F089: Delta-q Entropy Coding Optimization
- CWG-F080: Transform Partition Restriction and Encoder Speed-up
- CWG-F064: Improvements in refined MVs and EXT-WARP
- CWG-F065: Modification of DMVR search points
- CWG-F076: Simplifications for context modeling: A data-driven approach (Test 1 and Test 3)
- CWG-F084: Simplifications for intra BAWP
(Aspect 1)
- CWG-E229: Sample reduction for MHCCP model derivation
- CWG-F069: On the Maximum Number of Segments
- CWG-F115: Table size reduction for CCSO
- CWG-F044: On warp mode of AVM (disabled in LD)
- CWG-F120: On Intra Bi-Prediction
- CWG-E230: On Core Transform for AV2
- CWG-F101: On luma downsampling of cross-plane wiener restoration filter
- CWG-F092: TMVP Simplification (Test2)
- CWG-F113: Improvements for MHCCP
- CWG-F061: Symbol size reduction for wedge angle and joint shell class signaling
- CWG-F059: Re-Design of Partition Symbol Context Models
- CWG-F111: On DAMR Memory Bandwidth
- CWG-F068: Bugfix of CCSO filtering unit size for 4:2:2 and 4:4:4
- CWG-D181: On block-adaptive weighted prediction for across scale prediction (BAWP + RPR disabled by default)
- CWG-F130: Bugfix for Local IntraBC Search Range under non Common Test Condition
- CWG-E121: Enhancements of reference frame list construction for temporal scalability
- CWG-F121: Simplification for IDIF (Test 2)
- CWG-F085: Improvements to motion vector trajectory tracking
- CWG-F099: Modified deblocking filter for AVM
- CWG-F128: Context Model Optimization for Optical Flow Refinement Flag
- CWG-F096: Removal of Super Resolution Mode
- CWG-F144: On the Interaction Between Uneven Transform Partitioning and Sub-Block Deblocking
- CWG-F087: Precision Adjustment and Retraining for RESTORE_PC_WIENER
- CWG-F116: Improvements in storing MVs for TMVP list
- CWG-F051: TIP Simplification
- CWG-F146: Transform partition type replacement
- CWG-F088: MHCCP with 3 Parameters
- CWG-F078: Inter coding mode redesign and consolidation
- CWG-F127: Reduction of CDFs of MVD coding
- CWG-E254: TIP Enhancement
- CWG-F093: Improvements to Data-Driven Intra Prediction
- CWG-F043: Improved SMVP for TIP mode candidates
- CWG-F082: Extended DPB mode for AV2 in RTC
- CWG-F119: On skip mode parsing dependency
- CWG-F054: Picture boundary handling for loop filtering (HW SG recommended version)
- CWG-F110: Enhanced Transform Coding for Lossless AVM (Aspects 1 and 2 with Option 1)
- CWG-F112: Amendment to EXT_QUANT:  Add seq-level base uv ac offset and misc flags
- CWG-E206: Guided Detail Filter - r3
- CWG-E127: BRU: Backward Reference Updating for Ultra Low Latency Video Coding

Other Normative Changes
-----------------------
- Enable virtual line buffer for cross-component non-separable wiener filter
- CWG-E066: Interleaved parsing at 64x64 level with SDP in key frames (missing part from previous cycle)

Encoder-only Improvements (Non-normative)
-----------------------------------------
- CWG-F002: Intra-BC decision bug fix for natural content
- CWG-E251: An encoder side improvement for extended SDP
- Disable frame averaging and enable tile averaging for context initialization when the number of tiles is 2.
- Fix bug disabling PC_WIENER in search_pc_wiener_visitor.
- CWG-F136: TCQ Improvements
- CWG-F163: CTC for AVM resize-mode

Encoder / Decoder Speedups (Non-normative)
------------------------------------------
- SIMD for DIP
- Speed-up decoder by optimizing refinemv_highbd_pad_mc_border function
- CWG-F049: AVM v9 encoder and decoder optimizations
- CWG-F073: Improved model RD based transform pruning of inter modes
- CWG-F118: Inter mode evaluation optimization
- CWG-F011: Simplification of Palette Mode (Aspect 1)
- CWG-F046: Encoder speed up using ML-based Partition Pruning, additional speedup

Code Cleanups
-------------
- Suppress TFLite compile time warnings

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/13#tab-issues

  • research-alt-v1-anchor_r4.0

    0418e06c · Enable more intra mode search · 
    research anchor v1 release 4

Contains the following changes on top of v1 release 3:
- CWG-E191: Filling residual pixels outside the actual frame border
- CWG-E171: Enable more intra mode research

  • research-v9.0.0

    6fa0d27c · Fix TCQ assertion failure in windows VS · 
    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

  • research-v9.0.0-rc1

    379b6174 · Increase number of shards of address to 34 · 
    Release candidate #1 for 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

  • research-v8.1.0

    94e97f34 · Fix the nightly test failure for sequence level down-sample filter selection · 
    Minor release including following on top of v8.0.0.

Candidate Tools
---------------
- CWG-E103: Move max frame width/height,color_config() forward

Code Cleanups / Improvements
----------------------------
- Fix context memory analyzer

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/11#tab-issues

  • research-v8.0.0

    8e0b4695 · CWG-E135 TFlite local dependencies · 
    research-v8.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-E099: Further simplify and unify the DRL and the WRL
- CWG_E084: Context model optimization
- CWG-E098: Optimize the signaling of TIP direct output mode
- CWG-E107: Enlarge max inter sdp block size to 64x64
- CWG-E112: Supports compound prediction for additional blocks
- CWG-E105: Improvements/fixes in CCTX, TX partition type in WAIP, and REFINEMV
- CWG-E109: Transform type flexibility improvements
- CWG-E134: Improvements of RefMV Bank and Warp Parameter Bank
- CWG-E106: Data-Driven Transforms for Inter Coding
- CWG-E108: Fixing line-buffer and division operation issues in the CfL mode
- CWG-E133: Simplification of Skip Mode
- CWG-E122: Enabling Intra-BC for natural content
- CWG-E136: Reducing the number of partition contexts
- CWG-E132: Further Memory Reduction for Intra Bi-Prediction (overrides previous
  proposal CWG-E094)
- CWG-E139: Improved TMVP motion vector from wedge mode blocks
- CWG-E110: Pixel-Classified Explicitly Signaled Frame-Level Non-separable
  Wiener Filters
- CWG-E115: Simplified motion trajectory tracking
- CWG-E141: Unrestricted Partitioning for 1:4 Coding Blocks
- CWG-E005: Coefficient coding improvements (Part2)
- CWG-E125: Simplifications for MHCCP
- CWG-E123: Refinements for Probability Adjustment Rate Adaptation (PARA) in
  Entropy Coding

Encoder-only Changes
--------------------
- CWG-E104: Encoder mode/transform search optimizations
- CWG-E137: Encoder optimizations at speed 0 and 1
- CWG-E135: Encoder speed up using ML-based Partition Pruning, inter frames

Code Cleanups / Improvements
----------------------------
- TFLite: Bump up version to 2.17 and enable XNNPack
- CWG-E148 Research v8.0.0 anchor: Removal and Merging of Compile Time Flags

Gitlab CI Updates
-----------------
- Gitlab CI: add build check for 2 tools that are off by default.

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/10#tab-issues

  • research-v8.0.0-rc1

    0b3d929b · Enable CWG-E135, ML based partition pruning in compile time. · 
    Release candidate #1 for research-v8.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-E099: Further simplify and unify the DRL and the WRL
- CWG_E084: Context model optimization
- CWG-E098: Optimize the signaling of TIP direct output mode
- CWG-E107: Enlarge max inter sdp block size to 64x64
- CWG-E112: Supports compound prediction for additional blocks
- CWG-E105: Improvements/fixes in CCTX, TX partition type in WAIP, and REFINEMV
- CWG-E109: Transform type flexibility improvements
- CWG-E134: Improvements of RefMV Bank and Warp Parameter Bank
- CWG-E106: Data-Driven Transforms for Inter Coding
- CWG-E108: Fixing line-buffer and division operation issues in the CfL mode
- CWG-E133: Simplification of Skip Mode
- CWG-E122: Enabling Intra-BC for natural content
- CWG-E136: Reducing the number of partition contexts
- CWG-E132: Further Memory Reduction for Intra Bi-Prediction (overrides previous
  proposal CWG-E094)
- CWG-E139: Improved TMVP motion vector from wedge mode blocks
- CWG-E110: Pixel-Classified Explicitly Signaled Frame-Level Non-separable
  Wiener Filters
- CWG-E115: Simplified motion trajectory tracking
- CWG-E141: Unrestricted Partitioning for 1:4 Coding Blocks
- CWG-E005: Coefficient coding improvements (Part2)
- CWG-E125: Simplifications for MHCCP
- CWG-E123: Refinements for Probability Adjustment Rate Adaptation (PARA) in
  Entropy Coding

Encoder-only Changes
--------------------
- CWG-E104: Encoder mode/transform search optimizations
- CWG-E137: Encoder optimizations at speed 0 and 1
- CWG-E135: Encoder speed up using ML-based Partition Pruning, inter frames

Code Cleanups / Improvements
----------------------------
- TFLite: Bump up version to 2.17 and enable XNNPack

Gitlab CI Updates
-----------------
- Gitlab CI: add build check for 2 tools that are off by default.

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/10#tab-issues

  • research-v7.0.1

    6518d8e8 · Gitlab CI: add build check for 2 tools that are off by default. · 
    Minor release including following bug fixes on top of v7.0.0.

- Data race in aom_highbd_upsampled_pred_sse2:
  https://gitlab.com/AOMediaCodec/avm/-/issues/399
- Compile failure with CONFIG_ML_PART_SPLIT on:
  https://gitlab.com/AOMediaCodec/avm/-/issues/401
- Compile failure with CONFIG_BAWP_ACROSS_SCALES_FIX on:
  https://gitlab.com/AOMediaCodec/avm/-/issues/400

  • research-v7.0.0

    700b1c2b · Move allocation of pred buffer in upsampled_pref_error() · 
    research-v7.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-D181: Fix on BAWP across scales prediction
            (Disabled by default)
- CWG-D171: Low Complexity Chroma Coding
- CWG-D172: Partitioning for 1:4 Coding Blocks
- CWG-D192: Probability Model Training for Entropy Coding
- CWG-E007: merge the prediction steps for TIP reference mode
- CWG-E014: MVD coding
- CWG-E009: Quick fix of CWG-D149 and CWG-D166 integration
- CWG-D146: Quantization Matrix Simplification
- CWG-E005: Coefficient coding improvements
- CWG-E016: Unification of Cross-Plane Wiener Filters +
- CWG-E048: Optimizations to Non-Separable Wiener Filter
- CWG-E021: Simplification of Motion Vector Prediction List Construction
- CWG-E062: On block size restriction for Chroma-from-Luma prediction modes
- CWG-E049: Improvements on Identity Transform Coding
- CWG-E039: Wide Angular Intra Prediction
- CWG-E006: Linear intra prediction with matched reference templates
            (Global IBC only)
- CWG-E067: Improvement of TMVP
- CWG-E031: Bilinear interpolation for DAMR and OPFL
- CWG-E066: Addressing latency issue in SDP
- CWG-E060: On removing blocking artifacts in sub-prediction blocks
- CWG-E029: Signaling Bugfix of CCSO with Band Offset Only
- CWG-D178: Improved Lossless Coding for AVM
- CWG-E052: Complexity Reduction of Optical Flow and Affine Motion Refinement
            (aspects 2, 3 and 5)
- CWG-E055: Transform partition improvements
- CWG-E056: Enhancement of the frame output process (Overlay frames fix only)
            (overlay frames disabled by default)
- CWG-D185: Extended MV Refinement Search
- CWG-E030: Downsampling for Subblock-Based MV Refinement Search
- CWG-E065: Subblock-Level Padding for Subblock MV Refinement
- CWG-E019: Simplification of Motion Field Hole Filling
            (Aspect #1: change hole filling to 128x128 based)
- CWG-E038: On parsing dependency in intra transform signaling
- CWG-D191: Inter IST
- CWG-E023: SDP extension

Encoder-only Changes
--------------------
- CWG-E028: Context used in rate estimation fix
- CWG-E044: Disable Filter-Intra Prediction Mode
- Encoder-only Improvements for prune_ref_frames speed feature
- CWG-E070: Encoder speed up using ML-based Partition Pruning
            (Disabled by default)

Code Cleanups / Improvements
----------------------------
- CWG-E010: AVM Analyzer
- Accounting/throughput code: support for computing CDF switch counts
- Encoder Memory Reductions (Bit-exact)
- Encoder Speed Optimizations (Bit-exact)

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/9#tab-issues

Gitlab CI Updates
-----------------
- Gitlab CI: Enable assertions

  • research-v7.0.0-rc1

    985127d9 · CWG-E023 (SDP extension) · 
    Release candidate #1 for research-v7.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-D181: Fix on BAWP across scales prediction
            (Disabled by default)
- CWG-D171: Low Complexity Chroma Coding
- CWG-D172: Partitioning for 1:4 Coding Blocks
- CWG-D192: Probability Model Training for Entropy Coding
- CWG-E007: merge the prediction steps for TIP reference mode
- CWG-E014: MVD coding
- CWG-E009: Quick fix of CWG-D149 and CWG-D166 integration
- CWG-D146: Quantization Matrix Simplification
- CWG-E005: Coefficient coding improvements
- CWG-E016: Unification of Cross-Plane Wiener Filters +
- CWG-E048: Optimizations to Non-Separable Wiener Filter
- CWG-E021: Simplification of Motion Vector Prediction List Construction
- CWG-E062: On block size restriction for Chroma-from-Luma prediction modes
- CWG-E049: Improvements on Identity Transform Coding
- CWG-E039: Wide Angular Intra Prediction
- CWG-E006: Linear intra prediction with matched reference templates
            (Global IBC only)
- CWG-E067: Improvement of TMVP
- CWG-E031: Bilinear interpolation for DAMR and OPFL
- CWG-E066: Addressing latency issue in SDP
- CWG-E060: On removing blocking artifacts in sub-prediction blocks
- CWG-E029: Signaling Bugfix of CCSO with Band Offset Only
- CWG-D178: Improved Lossless Coding for AVM
- CWG-E052: Complexity Reduction of Optical Flow and Affine Motion Refinement
            (aspects 2, 3 and 5)
- CWG-E055: Transform partition improvements
- CWG-E056: Enhancement of the frame output process (Overlay frames fix only)
            (overlay frames disabled by default)
- CWG-D185: Extended MV Refinement Search
- CWG-E030: Downsampling for Subblock-Based MV Refinement Search
- CWG-E065: Subblock-Level Padding for Subblock MV Refinement
- CWG-E019: Simplification of Motion Field Hole Filling
            (Aspect #1: change hole filling to 128x128 based)
- CWG-E038: On parsing dependency in intra transform signaling
- CWG-D191: Inter IST
- CWG-E023: SDP extension

Encoder-only Changes
--------------------
- CWG-E028: Context used in rate estimation fix
- CWG-E044: Disable Filter-Intra Prediction Mode
- Encoder-only Improvements for prune_ref_frames speed feature
- CWG-E070: Encoder speed up using ML-based Partition Pruning
            (Disabled by default)

Code Cleanups / Improvements
----------------------------
- CWG-E010: AVM Analyzer
- Accounting/throughput code: support for computing CDF switch counts
- Encoder Memory Reductions (Bit-exact)
- Encoder Speed Optimizations (Bit-exact)

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/9#tab-issues

  • research-v6.1.0

    de986bff · av1_determine_sc_tools_with_encoding: reorder initialization · 
    research-v6.1.0 minor release.

Includes the following changes since research-v6.0.0 anchor:

Candidate Tools
---------------
- CWG-D181: Fix on BAWP across scales prediction (off by default)
- CWG-D171: Low Complexity Chroma Coding
- CWG-D172: Partitioning for 1:4 Coding Blocks
- CWG-D192: Probability Model Training for Entropy Coding

Code Cleanups / Improvements
----------------------------
- CWG-E010: AVM Analyzer
- Misc memory reductions

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/8#tab-issues