2018-01-21, 17:43
(2018-01-21, 15:03)Matalo Wrote: Not sure I’m understanding the color space issue.
I set my shield to 1920x1080 YUV 444 8-bit Rec. 709 when I want to watch 1080p content. Kodi is set to adjust refresh rate. It changes to 24p and the colorspace is still the same one.
Yep - in this mode you are playing Rec 709 HD content and it is being output in Rec 709 colour space (and your display handles any upconversion)
Quote:I set my shield to 3840x2160 YUV 420 10-bit Rec. 2020 when I want to watch 4k/hdr content. The Shield does not support 24p with that colorspace, but when Kodi adjust the frame rate to 24p. I get YUV 422 12-bit, which from my somewhat limited understanding is equivalent.It's the HDMI spec that doesn't support 4:2:0 at 24p. https://www.hdmi.org/manufacturer/hdmi_2...q.aspx#146
4:2:0 is only supported for 50 and 60p on HDMI, as at 30p and below there are no bandwidth issues that require it, and so the higher quality 4:4:4 or 4:2:2 formats can be used.
Quote:I am guessing my TV will adjust the 12 bit to 10 bit by some form of magic.No magic - your 8 or 10 bit source will be output at 12 bit with nothing useful in the 4 or 2 LSBs, and your TV will probably only have 10 bit max bit-depth. Don't worry...
Quote:I do not notice any banding and I have compared it by manually setting the shield to YUV 422 12bit 24hz and no resolution switching.
Am I missing something? Or does the problem not affect me because I manually switch between 1080 and 2160?
It's because you are manually switching between Rec 709 and Rec 2020 - not 1080p and 2160p. (You'll also see 2160p Rec 709 options - and some 2160p stuff is in Rec 709 colourspace - such as early 2160/50p and 60p TV tests like 2014 World Cup stuff)
