Patent ID: 11943448
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A non-transitory computer readable storage medium storing instructions, wherein, when the instructions are executed by a processor, the instructions are configured to cause the processor to:
receive a coded video bitstream;
determine, from the coded video bitstream, a flag for a current video block, wherein the flag indicates whether joint motion vector difference (MVD) coding is applied to the current video block; and
in response to the flag indicating that the joint MVD coding is applied to the current video block:
obtain, from the coded video bitstream, a joint MVD for the current video block,
derive, based on the joint MVD, a MVD for the current video block, and
decode, based on the joint MVD and the derived MVD, the current video block,

wherein the flag indicates whether to apply joint MVD and to derive reference frame to the current video block in a single reference mode.