| CPC H04N 19/105 (2014.11) [H04N 19/176 (2014.11); H04N 19/188 (2014.11); H04N 19/46 (2014.11)] | 19 Claims |
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1. A method of video processing, comprising:
performing a conversion between a current block of a video and a bitstream of the video,
wherein the bitstream conforms to a first rule that specifies that a context increment is used for including a first sign flag of a first coefficient in the bitstream, and
wherein the first rule specifies that a value of the context increment is based on whether a first coding mode is applied on the current block,
wherein the bitstream conforms to a second rule that specifies use of multiple adaptation parameter set network abstraction layer units for video,
wherein each adaptation parameter set network abstraction layer unit has a corresponding adaptation parameter set type value,
wherein each adaptation parameter et network abstraction layer unit is associated with a corresponding video layer identifier,
wherein each adaptation parameter set network abstraction layer unit is a prefix unit or a suffix unit, and
wherein the second rule specifies that, responsive to the multiple adaptation parameter set network abstraction layer units having a particular adaptation parameter set type value, independent of multiple video layer identifiers of the multiple adaptation parameter set network abstraction layer units, and whether the multiple adaptation parameter set network abstraction layer units are the prefix unit or suffix unit, adaptation parameter set identifier values of the multiple adaptation parameter set network abstraction layer units belong to a same adaptation parameter set identifier value space, which means that the adaptation parameter set identifier values of each of the multiple adaptation parameter set network abstraction layer units with the particular adaptation parameter set type value are different from each other within the shared value space.
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