Patent ID: 11871025
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 13:
14. A non-transitory computer-readable storage medium storing instructions that cause a processor to:
determine, for a conversion between a current block of a video coded using a sub-block based temporal motion vector prediction tool and a bitstream of the video, a temporal motion vector;
modify the temporal motion vector by right-shifting without left-shifting the temporal motion vector to an integer precision, wherein the right-shifting is a right-shifting by a fixed value equal to 4;
locate at least one region for the current block in a collocated picture based on the modified temporal motion vector, wherein the at least one region includes multiple pixels with integer precision; and
perform the conversion based on the at least one region,
wherein performing the conversion comprises:
acquiring a temporal motion vector prediction based on the at least one region,

wherein the determining the temporal motion vector comprises:
initializing the temporal motion vector to a default motion vector, and
setting the temporal motion vector to a specific motion vector related to a specific spatial neighboring block of the current block, wherein the specific spatial neighboring block is in a current frame comprising the current block.