VTM is also affected. While testing the VVC in lossless mode, encoder seems to generate a invalid bit-stream and the decoder fails with error message

[Shabhrish]

• The idea is to run VVC Software in lossless mode.
• Was able to set up VVC locally and provided appropriate configuration files to run it in lossless mode.
• However, the encoder seems to generate an invalid bitstream and the decoder

fails with the following error message:
Warning: Level set to none, invalid or unknown value
POC 0 LId: 0 TId: 0 ( IDR_N_LP, I-SLICE, QP 0 ) [DT 0.005] [L0] [L1]
[:,(unk)]

Total Time: 0.104 sec.

• See attachments for configuration files, log results, and a sample image to reproduce the issue

Steps to Reproduce:

• Download the attached configuration files (lossless.cfg,

encoder_intra_vtm.cfg), the sample image (cim10_672x768_crop.ppm)

• Download and run the attached batch file (00_test_VVC.bat)
• %ENC% -i tmp.raw -c encoder_intra_vtm.cfg -c lossless.cfg

--SourceWidth=!width! --SourceHeight=!height! --BitstreamFile=!out! -f 1 -fr 1
-g 1 >> %resE%

• %DEC% --BitstreamFile=!out! --ReconFile=!recon! -opl logDec.txt >> %resD%
• The encoder and decoder log files are attached for reference

[Shabhrish]

lossless config file

[Shabhrish]

decoder log

[Shabhrish]

Log Encoder

[Shabhrish]

Log Decoder