US 12,445,654 B2
Video coding bitstream extraction with identifier signaling
Ye-Kui Wang, San Diego, CA (US); and FNU Hendry, San Diego, CA (US)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Oct. 25, 2023, as Appl. No. 18/494,459.
Application 18/494,459 is a continuation of application No. 17/568,531, filed on Jan. 4, 2022, granted, now 11,968,400.
Application 17/568,531 is a continuation of application No. PCT/US2020/037780, filed on Jun. 15, 2020.
Claims priority of provisional application 62/870,892, filed on Jul. 5, 2019.
Prior Publication US 2024/0137569 A1, Apr. 25, 2024
Prior Publication US 2024/0236376 A9, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/70 (2014.01); H04N 19/172 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method implemented by a decoder, the method comprising:
receiving an extracted bitstream comprising a set of sub-pictures, wherein the extracted bitstream is a bitstream extracted from an input bitstream by a sub-bitstream extraction process, and wherein the extracted bitstream comprises only a subset of the sub-pictures of the input bitstream for the sub-bitstream extraction process;
determining a flag in the extracted bitstream, wherein the flag is required to be set to one when the flag is contained in the extracted bitstream to indicate sub-picture information relating to the subset of the sub-pictures is present in the extracted bitstream, and wherein the flag is derived from a Sequence Parameter Set (SPS) in the extracted bitstream;
obtaining one or more sub-picture Identifiers (IDs) of the subset of the sub-pictures based on the flag; and
decoding the subset of the sub-pictures according to the sub-picture IDs.