Tomonori Hashimoto authored 3 years ago and Vadim Seregin committed 3 years ago

fix Issue #10: Encoder-decoder mismatch in ECM-3.1 when inter MTS is enabled in the case of CTU size is equal to 256

Nan Hu authored 3 years ago and Vadim Seregin committed 3 years ago

JVET-X0071: Improvement of in-loop filters: Chroma bilateral filter, band-based ALF classifier and longer filter for CCALF

In ECM, xSubPuBio would be called during MC only when BASE_NORMATIVE=0 (which implies BDOF_RM_CONSTRAINTS=0).
It requires accessing spanned motion field to get MVs for BDOF operations.
However, encoder does not span TM-refined motion before MC performs while decoder does, triggering mismatching between encoder and decoder.
This mismatching issue can be reproduced by "-c ./tool-on/encoder_randomaccess_vtm.cfg -c BQSquare.cfg --SEIDecodedPictureHash=1 -ip 64 -q 27 -ts 1 -f 65 -fs 64"

- Integration of the adopted config. (Test 4.6)
- (LFNST8, LFNST16) = (32x64, 32x96)