Today I installed Shotcut v.18.11.18
COLOR TESTS:
Input: bmp file: 16-180-16
bmp file encoded to mp4 with ffmpeg LIMITED RANGE H.264
Test mp4 file: 16-179-14
Shotcut preview window: 17-179-16
Test mp4 file encoded with Shotcut lossless codecs:
H.264: 16-179-14
FFV1: 15-178-13
HuffYUV: 15-178-13
UtVideo: 29-208-20
Change in testing methodology: viewing files with Windows Media Player and checking colors with eyedropper program.
All lossless codecs and Shotcut preview window within rounding error except UtVideo.
Thank you, Dan, for your attention to color accuracy.