Patent ID: 11917132
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. 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 having one or more video layers comprising a current picture comprising a current slice of the current picture and a bitstream of the video according to a first rule, and
wherein the first rule specifies a first condition comprising that when the current picture with a network abstraction layer (NAL) unit header layer identifier equal to a first particular value is not a clean random access picture with a first variable indicating no output before recovery equal to 1, a picture, associated with a clean random access picture with a second variable indicating no output before recovery equal to 1, that precedes, in a decoding order, all leading pictures associated with the clean random access picture with the second variable indicating no output before recovery equal to 1, a leading picture associated with the clean random access picture with the first variable indicating no output before recovery equal to 1, a first gradual decoder refresh picture with a third variable indicating no output before recovery equal to 1, or a recovering picture of a second gradual decoder refresh picture with a fourth variable indicating no output before recovery equal to 1 and the NAL unit header layer identifier equal to the first particular value, no picture that has been generated by a decoding process for generating an unavailable reference picture is referred to by an entry in a reference picture list of the current slice of the current picture.