Chroma QP mapping tables are modified such that the relationship
between luma PSNR an chroma PSNR is on average closer to the
one observed with HM 16.20.
The net effect is that bits are shifted from chroma to luma and
BD-rate differences between VTM and HM are most consistent across
components.

BD-rate between VTM 8.0 and HM 16.20:
AI: -24.09% -31.32% -32.82%
RA: -34.84% -46.33% -46.91%
LB: -30.02% -42.62% -40.94%
LP: -33.12% -44.28% -42.80%

BD-rate between VTM 8.0 plus this change and HM 16.20:
AI: -24.99% -25.35% -26.86%
RA: -35.76% -39.04% -40.03%
LB: -30.56% -32.89% -30.77%
LP: -33.62% -34.86% -32.56%

- remove picture partitioning section from CTC file (so that they can be combined wit partitioning in any order)
- remove random access parameters from partitioning examples (combines well with AI or LD too)
- add examples for three slices with slice layout inference from subpictures and without
- try to make naming somewhat consistent

JVET-Q0806 Geo related adoptions (JVET-Q0059, JVET-Q0077, JVET-Q0123, JVET-Q0188, JVET-Q0242_GEO, JVET-Q0309, JVET-Q0365 and JVET-Q0370)

Added main_10 and main_444_10 profiles, and removed old profiles.
Use 'auto' to automatically select (changed default of cfg files).
Use 'none' to produce non-conforming bitstreams.

Also added a structure that describes the features of each
profile/level/tier, should be added as further constraint checks added.

  - Move the following SPS syntax elements:
      sps_log2_ctu_size_minus5
      sps_idr_rpl_present_flag
      sps_bdof_pic_present_flag
      sps_smvd_enabled_flag
      sps_dmvr_pic_present_flag
      sps_isp_enabled_flag
      sps_mip_enabled_flag
      sps_sbt_enabled_flag
      sps_lfnst_enabled_flag
      sps_affine_amvr_enabled_flag
      sps_affine_prof_enabled_flag
      sps_prof_pic_present_flag
      sps_bcw_enabled_flag

  - Move the following PPS syntax elements:
      entropy_coding_sync_enabled_flag
      constant_slice_header_params

  - Add missing monochrome conditions for the following SPS syntax elements:
      qtbtt_dual_tree_intra_flag
      sps_cclm_enabled_flag

  - Add missing sps_mrl_enabled_flag and associated behavior.

  - Remove transquant_bypass_enabled_flag from PPS.

Brian Heng authored 5 years ago and Karsten Suehring committed 5 years ago

  - Remove bricks and related syntax.
  - Add new tile / slice syntax from P1004.
  - Fix cross tile / slice prediction bugs.
  - Update config files and documentation with new tile / slice config options.

From the meeting notes:
Decision (CTC): It is agreed to disable MIP for the LD
configurations, as the runtime increase for some sequences is high.

Add a description of ChromaTS into the software manual.

- add option to completely disable
- add iparameter to software manual

Implementation for JVET_N0100, proposal 1, allow signaling information about long-term reference picture POC LSB in reference picture list syntax structure.

fix some JCCR related indentation, encapsulation, and descriptive text, add --PYUV to software manual

This should implement the following from the meeting notes:

For CTC, it was initially agreed to use the new syntax to achieve
the chroma QP settings proposed in O0186 for SDR, N0221 for PQ,
O0433 for HLG. For the joint table, use the average of the Cb and Cr
tables. Below QP = 16, chroma and luma QP should be equal for CEs
using low QP.

Decision (CTC): This was further discussed in the closing plenary
on Friday. It was suggested to keep the anchor QP settings for PQ
and HLG as in CTC of prior meeting cycle. For SDR, see above.
Below QP = 16, chroma and luma QP should be equal for CEs using low
QP.