u/Glad-Collection-4350

My ub820 says it's outputting 12bit 4.4.4 color playing a 4k disc but when I check the stream info on the VisionMaster pro 1, it's 8bit colour (playing 4k disc with Dolby vision)

Apple tv shows display a depth of 10 bit colour when I play content so does that mean I've got my disc player set up wrong?