Influence of CRF value for compression efficiency

This paper deals with the dependence of Constant Rate Factor (CRF) on the bitrate for most commercial used compression standards H.264 and H.265. The measurements were done for eight different video sequences with high resolutions (HD, Full HD, Ultra HD) depending on content. The results indicated biggest differences in the coding efficiency in CRF range from 10 to 20 and from 40 to 51 by both mentioned codecs.