Patent ID: 11924474
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A non-transitory computer-readable recording medium storing a bitstream of a video which is generated by a method performed by a video processing apparatus, wherein the method comprises:
generating the bitstream of the video comprising one or more pictures according to a format rule, and
wherein the format rule specifies that a first syntax element that indicates whether motion vector difference coding syntax structure for a particular reference picture list (RPL) is parsed or not parsed is included in the bitstream when (i) a value of a second syntax element indicates that an RPL information is not present in a picture header or (ii) a value of a third syntax element indicates a number of reference pictures in the particular RPL is greater than 0 in case that the RPL information is present in the picture header, and the first syntax element is excluded from the bitstream when the value of the second syntax element indicates that the RPL information is present in the picture header and the value of the third syntax element indicates the number of the reference pictures in the particular RPL is equal to 0, and
wherein the format rule further specifies that a fourth syntax element that indicates a number of weights signaled for entries in the particular RPL is conditionally included in a weighted prediction parameters syntax structure indicating a table of weighted prediction parameters of the bitstream based on (iii) a fifth syntax element included in a picture parameter set indicating an applicability of explicit weighted prediction (WP) to B slices referring to the picture parameter set, and (iv) a sixth syntax element indicating whether WP information is included in the picture header, and (iii) the third syntax element indicating the number of the reference pictures in the particular RPL.