Picture timing information signaling in coded video
AssigneeBytedance Inc.
InventorYe-Kui Wang
Life of this patent
Estimating the term…
Abstract
Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video and a bitstream of the video comprising one or more output layer sets according to a rule, wherein the rule specifies that a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable-nested SEI message carrying picture timing information is not included due to use of a same picture timing in all output layer sets in the bitstream.
Claims20
A method of processing video data, comprising:
- performing a conversion between a video and a bitstream of the video comprising one or more output layer sets according to a rule,
- wherein the rule specifies that a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable-nested SEI message with a payload type of picture timing (PT) is not included when a flag included in the bitstream named general_same_pic_timing_in_all_ols_flag has a value of 1, and
- wherein the rule further specifies that a particular payload type value corresponding to subpicture level information is disallowed from VclAssociatedSeiList that is a list including one or more SEI payload type values.
An apparatus for processing video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
- perform a conversion between a video and a bitstream of the video comprising one or more output layer sets according to a rule,
- wherein the rule specifies that a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable-nested SEI message with a payload type of picture timing (PT) is not included when a flag included in the bitstream named general_same_pic_timing_in_all_ols_flag has a value of 1, and
- wherein the rule further specifies that a particular payload type value corresponding to subpicture level information is disallowed from VclAssociatedSeiList that is a list including one or more SEI payload type values.
A non-transitory computer-readable storage medium storing instructions that cause a processor to:
- perform a conversion between a video and a bitstream of the video comprising one or more output layer sets according to a rule,
- wherein the rule specifies that a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable-nested SEI message with a payload type of picture timing (PT) is not included when a flag included in the bitstream named general_same_pic_timing_in_all_ols_flag has a value of 1, and
- wherein the rule further specifies that a particular payload type value corresponding to subpicture level information is disallowed from VclAssociatedSeiList that is a list including one or more SEI payload type values.
A method for storing a bitstream of a video, wherein the method comprises:
- generating the bitstream of the video comprising one or more output layer sets according to a rule;
- and
- storing the bitstream in a non-transitory computer-readable recording medium,
- wherein the rule specifies that a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable-nested SEI message with a payload type of picture timing (PT) is not included when a flag included in the bitstream named general_same_pic_timing_in_all_ols_flag has a value of 1, and
- wherein the rule further specifies that a particular payload type value corresponding to subpicture level information is disallowed from VclAssociatedSeiList that is a list including one or more SEI payload type values.
Dependencies are inferred from the claim text.