US 11,812,062 B2
Syntax for signaling video subpictures
Ye-Kui Wang, San Diego, CA (US)
Assigned to BYTEDANCE INC., Los Angeles, CA (US)
Filed by Bytedance Inc., Los Angeles, CA (US)
Filed on Jun. 27, 2022, as Appl. No. 17/850,670.
Application 17/850,670 is a continuation of application No. PCT/US2020/067092, filed on Dec. 27, 2020.
Claims priority of provisional application 62/954,364, filed on Dec. 27, 2019.
Prior Publication US 2022/0377380 A1, Nov. 24, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/172 (2014.01); H04N 19/184 (2014.01); H04N 19/46 (2014.01); H04N 19/174 (2014.01); H04N 19/169 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11); H04N 19/174 (2014.11); H04N 19/184 (2014.11); H04N 19/188 (2014.11); H04N 19/46 (2014.11)] 16 Claims
OG exemplary drawing
 
1. A method of video processing, comprising:
performing a conversion between a video and a bitstream of the video,
wherein the bitstream conforms to a format rule,
wherein the format rule specifies that signaling a length of identifiers of subpictures in a sequence parameter set (SPS) of the bitstream is based on a value of a first syntax element in the SPS indicative of subpicture information is present, and independent of a value of a second syntax element in the SPS indicative of whether the identifiers are explicitly signaled, and
wherein the length corresponds to a number of bits used to represent a third syntax element indicating a subpicture identifier in the SPS, a fourth syntax element indicating a subpicture identifier in a picture parameter set (PPS) if present, and a fifth syntax element indicating a subpicture identifier in a slice header if present.