JVET-Q0824 Suggested Common Test Conditions and Reference Software Configurations for Lossless and Mixed Lossy/Lossless Applications [T. Nguyen, T.-C. Ma, A. Nalci]
This was discussed in the closing plenary on Friday 17 January at 1030 (GJS & JRO)
This document defines common test conditions (CTC) and reference software (VTM) configurations for lossless and mixed lossy/lossless scenarios. The test scenarios cover applications using either 4:2:0 or 4:4:4 chroma formats, and Y′CbCr or R′G′B′ input signals for the 4:4:4 chroma format case. The test sets include camera-captured and screen content.
The TGM names were to be filled in, but these were for well known sequences. The “lossy lossless” combination column is for further study to be determined at the next meeting. It was not known whether some sequences are available in RGB format or not; this can be checked, with the outcome reflected in the final version of the output document.
For the software configuration, it was suggested to use QP=0 explicitly so that the SPS reflects this. It was agreed to make sure that if the software doesn’t take care of this automatically, it would be addressed by the config file.
It was suggested that config details can be reflected in the reference config files, and instead have these just described in the document rather than having the specific parameter names and off-topic details in the document, to avoid needing to reissue the document just because of a new software version release.