JVET-AE0287 Non-EE2: A combination of JVET-AE0074 and JVET-AE0170 [K. Zhang, Z. Deng, L. Zhang (Bytedance), H. Huang, Y. Yu, H. Yu, D. Wang (OPPO)] [late]

This proposal presents the results of a combination of JVET-AE0074 and JVET-AE0170. The combination comprises three aspects.

• Aspect #1 (from both JVET-AE0074 and JVET-AE0170): CCP merge mode is harmonized with LB-CCP by inheriting the LB-CCP flag in the CCP merge candidate.
• Aspect #2 (from JVET-AE0074): The prediction of a fusion mode can be generated by the CCP-merge prediction and the angular intra-prediction.
• Aspect #3 (from JVET-AE0170): The prediction of a fusion mode can be generated by the CCP-merge prediction and the MM-CCCM prediction.

Results were reported as :

• AI {-0.02%, -0.70%, -0.68%, 102%, 100%}
• RA {}.

For the individual proposals, it had been assessed that the relatively low gain in chroma is not justifying the encoder run time increase that both of them had individually. From this contribution, it can be found that coding gains are almost additive, but run times are also additive, therefore it can be concluded that it does not have a better tradeoff than the individual contributions.

Further study was recommended for better tradeoff (better compression and/or decreased run time).