Patent ID: 11936903
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An apparatus for video coding, the apparatus comprising:
at least one memory configured to store computer program code;
at least one processor configured to access the computer program code and operate as instructed by the computer program code, the computer program code including:
first obtaining code configured to cause the at least one hardware processor to obtain a coding block of a video bitstream;
determining code configured to cause the at least one hardware processor to determine whether a joint coding of motion vector difference (JMVD) is used for predicting the coding block;
second obtaining code configured to cause the at least one hardware processor to obtain, based on determining that the JMVD is used for predicting the coding block, a list of scaling factors and the JMVD from the video bitstream;
deriving code configured to cause the at least one hardware processor to derive a predicted scaling factor based on the list of scaling factors;
further deriving code configured to cause the at least one hardware processor to derive a motion vector difference (MVD) for a reference list based on at least the joint motion vector difference and the predicted scaling factor;
reconstructing code configured to cause the at least one hardware processor to reconstruct the coding block based on the derived MVD.