Opened 5 years ago
Closed 5 years ago
#883 closed defect (fixed)
restriction for nesting_num_subpics_minus1 should be modified
| Reported by: | LIJINGYA | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | spec | Version: | VVC D8 vB |
| Keywords: | Cc: | ksuehring, bbross, XiangLi, fbossen, jvet@… |
Description
In current, restriction for nesting_num_subpics_minus1 is as below:
nesting_num_subpics_minus1 plus 1 specifies the number of subpictures to which the scalable-nested SEI messages apply. The value of nesting_num_subpics_minus1 shall be in the range of 0 to 254, inclusive.
The restriction on 254 should be removed. There is any reason for this restriction. It was probably copied from the previous existing text for num_subpics_minus1 and is not relevant anymore, especially since nesting_num_subpics_minus1 is coded with ue(v) and not u(8) as num_subpics_minus1 used to be coded in (now it also uses ue(v)).
The constraint should be the following: “When present, the value of nesting_num_subpics_minus1 shall be less than or equal to the value of sps_num_subpics_minus1 in the SPS referred to by the pictures in the CLVS.”
Change history (1)
comment:1 Changed 5 years ago by yk
- Resolution set to fixed
- Status changed from new to closed
Good catch. Thanks! Will be fixed in vD.