Patent ID: 11910004
Assignee: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 14:
15. An apparatus for processing video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
determine whether to enable a first tool, for a conversion between a current block and a bitstream based on a rule, wherein the rule indicates that the first tool and a second tool are not both used by the current block; and
perform, based on the determining, a conversion between the current block and the bitstream;
wherein one of the first tool and the second tool is a decoder side motion vector derivation tool to derive a refinement of motion information related to the current block, and
the other of the first tool and the second tool comprises:
a merge mode with motion vector differences which comprises motion vector expression comprising a first parameter representing a motion vector difference and a second parameter indicating a base candidate, wherein the first parameter comprises a motion magnitude and a motion direction,
wherein the decoder side motion vector derivation tool is disabled upon a determination that the current block is coded with the merge mode with motion vector differences.