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

Claim 19:
20. A non-transitory computer-readable recording medium storing a bitstream which is generated by a method performed by a video processing apparatus, wherein the method comprises:
determining 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
generating the bitstream from the current block based on the determining;
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.