Subpicture signaling in video coding
AssigneeQUALCOMM Incorporated
InventorsYong He, Vadim Seregin, Muhammed Zeyd Coban, Marta Karczewicz
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Abstract
An example device for coding video data includes memory configured to store the video data and one or more processors implemented in circuitry and communicatively coupled to the memory. The one or more processors are configured to determine whether a sequence parameter set of the video data refers to a video parameter set. Based on the sequence parameter set not referring to the video parameter set, the one or more processors are configured to determine a value of a first syntax element to be indicative of a profile-tier-layer structure being signaled in the sequence parameter set and code the video data based on the profile-tier-layer structure.
Claims26
A method of coding video data, the method comprising:
- determining whether a sequence parameter set of the video data refers to a video parameter set;
- based on the sequence parameter set not referring to the video parameter set, determining a value of a first syntax element to be indicative of a profile-tier-layer structure being signaled in the sequence parameter set;
- and
- coding the video data based on the profile-tier-layer structure.
A method of coding video data, the method comprising:
- determining whether there is no network abstraction layer (NAL) unit with a NAL unit header type of a gradual decoding refresh NAL unit type in an output layer set;
- based on there being no NAL unit with the NAL unit header type of the gradual decoding refresh NAL unit type in the output layer set, determining a value of a first syntax element to indicate gradual decoder refresh pictures are not present in a coded layer video sequence;
- and
- coding the video data of the coded layer video sequence without coding gradual decoder refresh pictures.
A device for coding video data, the device comprising:
- memory configured to store the video data;
- and
- one or more processors implemented in circuitry and communicatively coupled to the memory, the one more processors being configured to:
- determine whether a sequence parameter set of the video data refers to a video parameter set;
- based on the sequence parameter set not referring to the video parameter set, determine a value of a first syntax element to be indicative of a profile-tier-layer structure being signaled in the sequence parameter set;
- and
- code the video data based on the profile-tier-layer structure.
A device for coding video data, the device comprising:
- memory configured to store the video data;
- and
- one or more processors implemented in circuitry and communicatively coupled to the memory, the one more processors being configured to:
- determine whether there is no network abstraction layer (NAL) unit with a NAL unit header type of a gradual decoding refresh NAL unit type in an output layer set;
- based on there being no NAL unit with the NAL unit header type of the gradual decoding refresh NAL unit type in the output layer set, determine a value of a first syntax element to indicate gradual decoder refresh pictures are not present in a coded layer video sequence;
- and
- code the video data of the coded layer video sequence without coding gradual decoder refresh pictures.
Dependencies are inferred from the claim text.