[looun]

Can you define "RGB bit errors"?

It is the accuracy of RGB/YCbCr values of reference test patterns read from the HDMI output of the device. I use the Color Checker function of DVDO AVLab TPG 4K UHD Test Pattern generator to read the bit values from the output of the device under test. The function is similar to the "Pixel Cursor" function seen on Dolby Professional Reference Monitor- PRM-4220. The test patterns are MP4 files from Ted's LightSpace CMS calibration disk, the accuracy of which has been verified by several calibrators.

Kodi will remap 16-235 YCrCb source material to 0-255 RGB internally, and then remap this back to 16-235 (RGB I think usually on the Pi) on output, which can mean you get some additional banding compared to native 16-235 solutions.

Hmm... I wasn't aware of this. If this is true, the errors are actually Kodi conversion errors. For the Raspberry Pi2 and SHIELD Android TV I have used Kodi to play the MP4 test patterns. For the other Android devices that I have tested, I have used the native video player. I may have to repeat the test for the SHIELD using the native video player.

ok , but The human eye can see 0.40-0.70 difference?