Convert 4K to Blu-Ray

Hello. Yesterday i downloaded Blu-Ray movie. This Blu-Ray made from UHD 4K. Quality more better like license blu-ray. How make this downscale without loss quality?

Ouput file blu-ray from 4K:

Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 5 min
Bit rate mode : Variable
Bit rate : 26.9 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.541
Stream size : 23.6 GiB (77%)