US 12,407,866 B2
Random access point access unit in scalable video coding
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 Aug. 29, 2023, as Appl. No. 18/457,566.
Application 18/457,566 is a continuation of application No. 17/943,366, filed on Sep. 13, 2022, granted, now 11,800,153.
Application 17/943,366 is a continuation of application No. PCT/US2021/022400, filed on Mar. 15, 2021.
Claims priority of provisional application 62/990,387, filed on Mar. 16, 2020.
Prior Publication US 2023/0412847 A1, Dec. 21, 2023
Int. Cl. H04N 19/70 (2014.01); H04N 19/169 (2014.01); H04N 19/172 (2014.01); H04N 19/184 (2014.01); H04N 19/187 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11); H04N 19/184 (2014.11); H04N 19/187 (2014.11); H04N 19/188 (2014.11); H04N 19/46 (2014.11)] 17 Claims
OG exemplary drawing
 
1. A method of video processing, comprising:
performing a conversion between a video comprising one or more pictures in one or more video layers and a bitstream of the video,
wherein the bitstream comprises a coded video sequence that includes an access unit,
wherein the bitstream conforms to a format rule that specifies that each picture in the access unit carries a layer identifier that is equal to a layer identifier of one of pictures present in a first access unit of the coded video sequence, and the first access unit is the first one in an order of one or more access units of the coded video sequence,
wherein a first syntax element is included in an access unit delimiter network abstraction layer unit, and
wherein the access unit delimiter network abstraction layer unit is an only access unit delimiter network abstraction layer unit present in each intra random access point access unit or gradual decoding refresh access unit when a second syntax element, which is indicative of a maximum allowed number of layers in each coded video sequence that refers to a video parameter set, is greater than one.