Bitstream file name:
SUBPIC_I_HUAWEI_1.bit

Explanation of bitstream features:
sub-pictures of varying sizes. using the following  configurations,

# example 2 tiles, 3 subpictures (and each subpicture is a slice) in a 832x480 picture:
#----------
#|    |   |
#|    |   |
#|    |---|
#|    |   |
#|    |   |
#----------
#     |
#     v
# vertically divided into 2 tile, the second tile include two subpicture/slices

NumSubPics                              : 3             # number of subpictures in a picture
SubPicCtuTopLeftX                     	: 0 4 4         # specifies horizontal position of top left CTU of i-th subpicture in unit of CtbSizeY 
SubPicCtuTopLeftY                       : 0 0 2         # specifies vertical position of top left CTU of i-th subpicture in unit of CtbSizeY
SubPicWidth                             : 4 3 3         # specifies the width of the i-th subpicture in units of CtbSizeY
SubPicHeight                            : 4 2 2         # specifies the height of the i-th subpicture in units of CtbSizeY
SubPicTreatedAsPicFlag                  : 1 1 1         # equal to 1 specifies that the i-th subpicture of each coded picture in the CLVS is treated as a picture in the decoding process excluding in-loop filtering operations
LoopFilterAcrossSubpicEnabledFlag       : 0 0 0         # equal to 1 specifies that in-loop filtering operations may be performed across the boundaries of the i-th subpicture in each coded picture in the CLVS

and slices/tiles configuration 

EnablePicPartitioning         : 1                       # Enable picture partitioning (0: single tile, single slice, 1: multiple tiles/slices can be used)

TileColumnWidthArray          : 4                       # Tile column widths in units of CTUs. Last column width will be repeated uniformly to cover any remaining picture width
TileRowHeightArray            : 4                       # Tile row heights in units of CTUs. Last row height will be repeated uniformly to cover any remaining picture height  
RasterScanSlices              : 0                       # Raster-scan or rectangular slices (0: rectangular, 1: raster-scan)
RectSliceFixedWidth           : 0                       # Fixed rectangular slice width in units of tiles (0: disable this feature and use RectSlicePositions instead)
RectSliceFixedHeight          : 0                       # Fixed rectangular slice height in units of tiles (0: disable this feature and use RectSlicePositions instead)
RectSlicePositions            : 0 24 4 13 18 27
DisableLoopFilterAcrossTiles  : 1                       # Loop filtering (DBLK/SAO/ALF) applied across tile boundaries or not (0: filter across tile boundaries  1: do not filter across tile boundaries)
DisableLoopFilterAcrossSlices : 1                       # Loop filtering (DBLK/SAO/ALF) applied across slice boundaries or not (0: filter across slice boundaries 1: do not filter across slice boundaries)

Profile, tier, and level for the bitstream:
Main 10 profile, Main tier, Level 3.0


Max picture width and height, and any additional picture width and height values used (i.e., for reference picture resample or scalability):
SourceWidth=832
SourceHeight=480

Picture rate:
FrameRate = 30 


The bitstream can be decoded using VVC software, at Merge request https://vcgit.hhi.fraunhofer.de/jvet/VVCSoftware_VTM/-/merge_requests/1509
will be soon merged in master branch, with commit: 10937a6b1bdeb7daf77e5f8b71e20798aa71ad5f
VTM-8.0 is not used because tile/slice implementation has a bug.

The bitstream has been generated using this VVC software encoder cmd: 
EncoderApp.exe -c ../cfg/encoder_randomaccess_vtm.cfg -c ../cfg/nonCTC-SliceConfigExamples/subpicture_3Slice2TilesIndependent.cfg -c ../cfg/per-sequence/RaceHorsesC.cfg -b SUBPIC_I_HUAWEI_1.bit -q 37 -f 5 -i /d/testseqs/HEVC/ClassC/RaceHorses_832x480_30.yuv --SEIDecodedPictureHash=1

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