Patent ID: 11917211
Assignee: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A non-transitory computer-readable storage medium storing instructions that cause a processor to:
determine, for a conversion between a video comprising a video picture referring to a picture parameter set (PPS) and a bitstream of the video, a scanning process is applied to the video picture, wherein the video picture is partitioned into one or more tiles, one or more slices, and multiple coding tree units,
determine, in the scanning process, that a first syntax element is conditionally included in the PPS in the bitstream to indicate a number of rectangular slices in the video picture,
determine, for a slice of the number of rectangular slices which has a first slice index, that a second syntax element is conditionally included in the bitstream to indicate a number of explicitly provided slice heights for slices in a video tile comprising the rectangular slice having the first slice index, wherein the number of explicitly provided slice heights for slices in the video tile is equal to N, and N is no less than 0,
determine, when N is no less than 1, N third syntax elements are included in the bitstream to indicate slice heights of N slices in units of coding tree unit (CTU) rows, respectively, and
perform the conversion based on the second syntax element and the N third syntax elements;
wherein when a height of the video tile is greater than a sum of the slice heights of the N slices, a slice height of a remaining slice in the video tile other than the N slices is determined based on a slice height of a last slice of the N slices, and
wherein when a difference between the height of the video tile in units of coding tree blocks and a sum of the slice heights of the N slices is no less than a uniform slice height, the uniform slice height is used to partition the remaining part of the video tile other than the N slices recursively to form one or more uniform slices, until the remaining part of the video tile other than the N slices and the one or more uniform slices has a height less than the uniform slice height.