Patent ID: 11863781
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of video processing, comprising:
performing a conversion between a current slice of a current picture of a video and a bitstream of the video,
wherein the bitstream conforms to a format rule,
wherein the format rule specifies that a general constraint information syntax structure is present and is at a higher level than a sequence parameter set (SPS),
wherein a first constraint flag gci_no_explicit_weighted_prediction_constraint_flag is included in the general constraint information syntax structure and indicates constraints on an explicit weighted prediction being enabled for both of uni-directional predictive slices (P slices) and bi-predictive slices (B slices) of a set of pictures, and
wherein in response to a value of the first constraint flag indicating that the explicit weighted prediction is not applied to both of the P slices and the B slices:
a value of a second flag included in the SPS indicates that the explicit weighted prediction is not applied to the P slices referring to the SPS, and
a value of a third flag included in the SPS indicates that the explicit weighted prediction is not applied to the B slices referring to the SPS.