Bitstream file name:
SUBPIC_A_HUAWEI_3.bit

Explanation of bitstream features:
Subpicture ID signalling. The following subpicture settings are used:
SubPicInfoPresentFlag                   : 1             
NumSubPics                              : 5             
SubPicCtuTopLeftX                       : 0 3 0 11 11   
SubPicCtuTopLeftY                       : 0 0 6 0 6     
SubPicWidth                             : 3 8 11 4 4    
SubPicHeight                            : 6 6 3 6 3    
SubPicTreatedAsPicFlag                  : 1 1 1 1 1     
LoopFilterAcrossSubpicEnabledFlag       : 0 0 0 0 0

The tile/slice layout is the same to the one in file cfg\partitioning\subpicture_8_slice_12_tile_2_subpic.cfg in cloned software VVCSoftware_VTM.

The following four configurations are used for signalling the subpicture ID (The syntax elements are used from VVC spec text), each associated with one frame:  

------------config 1------------
subpic_info_present_flag = 1
subpic_id_mapping_explicitly_signalled_flag = 1
subpic_id_mapping_in_sps_flag = 0
subpic_id_mapping_in_pps_flag = 1
sps_subpic_id_len_minus1 = 16
pps_subpic_id = 4,5,8,3,0  

------------config 2------------
subpic_info_present_flag = 1
subpic_id_mapping_explicitly_signalled_flag = 1
subpic_id_mapping_in_sps_flag = 1
subpic_id_mapping_in_pps_flag = 0
sps_subpic_id_len_minus1 = 15
sps_subpic_id = 65535,65534,65533,65532,65531 

------------config 3------------
subpic_info_present_flag = 1
subpic_id_mapping_explicitly_signalled_flag = 1
subpic_id_mapping_in_sps_flag = 1
subpic_id_mapping_in_pps_flag = 0
sps_subpic_id_len_minus1 = 15
pps_subpic_id = 100,11,101,1,0

------------config 4------------
subpic_info_present_flag = 1
subpic_id_mapping_explicitly_signalled_flag = 1
subpic_id_mapping_in_sps_flag = 0
subpic_id_mapping_in_pps_flag = 1
sps_subpic_id_len_minus1 = 2
pps_subpic_id = 7,1,4,6,5

--------------------------------

NOTE:
this bitstream is designed to test the syntax element signaling of pps_subpic_id[i] and/or sps_subpic_id[i]. 
The signaled subpic_id can be printed out to show the different configurations for each frame.
However, there is no difference between the reconstructed pictures.
Therefore the hash in opl file for each output picture is the same. 


Profile, tier, and level for the bitstream:
Main 10 profile, Main tier, Level 4.1


Max picture width and height, and any additional picture width and height values used (i.e., for reference picture resample or scalability):
SourceWidth=1920
SourceHeight=1080

Picture rate:
FrameRate = 50 


The bitstream can be decoded using VVC software with version/tag VTM-10.0

Contact name and email of bitstream submitter:
Biao Wang
biao.wang@huawei.com
