[lmyllari]

Kodi uses the following from http://www.martinreddy.net/gfx/faqs/colorconv.faq

Code:

R'= Y' + 0.0000*Cb + 1.5701*Cr
G'= Y' - 0.1870*Cb - 0.4664*Cr
B'= Y' - 1.8556*Cb + 0.0000*Cr

I think this is slightly different from Poynton's book. My guess is that his will match the standard - I'll check tonight unless someone else does it first.

[Satkid]

HomerJau- Arcam avr600 is what i have with monitor audio golds, so good to hear that you haven't noticed a difference. How was it with blu ray movies, as you only mentioned music.

Guys - so if you have an i7 pc with a quite expensive 4gb graphics card, can kodi take full advantage of it and give smoother/clearer picture than say the nuc integrated chip.

Has anyone done a comparison between a decent spec graphics card/pc vs a nuc?

Thanks


Sent from my iPhone

[HomerJau]

Satkid: Same with blu-ray movies. HDMI Passthrough to AVR sounds identical be it my i3 NUC or Oppo 95.

Video looks same to me too, displayed on 65" 4K TV but I now use the Denon which up scales everything to 4K. Previously with the Arcam it was the TV that upscaled HDMI to 4K internally.

[wesk05]

Kodi uses the following from http://www.martinreddy.net/gfx/faqs/colorconv.faq

Code:

R'= Y' + 0.0000*Cb + 1.5701*Cr
G'= Y' - 0.1870*Cb - 0.4664*Cr
B'= Y' - 1.8556*Cb + 0.0000*Cr

I think this is slightly different from Poynton's book. My guess is that his will match the standard - I'll check tonight unless someone else does it first.

I hope that is not the one Kodi is using Even if you were to correct with 128 offset, it is still off for many colors.

R'= Y' + 0.0000*(Cb-128) + 1.5701*(Cr-128)
G'= Y' - 0.1870*(Cb-128) - 0.4664*(Cr-128)
B'= Y' + 1.8556*(Cb-128) + 0.0000*(Cr-128)

I think we should take this discussion to a new thread. We have completely derailed the OP's question.

[lmyllari]

I left out the offsets and scaling for brevity. I agree on a new thread.

[wesk05]

It wasn't a response to what you *wrote* in #19. Only looked at the table and just thought I'd check up on that value. Not to make a point or anything, I just did it since my gear was hooked up and I thought why not..

Oh! I get it now. Well... that particular red is 166,59,66 on RPi2 and 167,58,66 on nVIDIA Shield 3.1. I don't have the number with me now for the upcoming 3.2 firmware.

[wesk05]

I left out the offsets and scaling for brevity. I agree on a new thread.

May be one of the mods can move our posts to a new thread.

[Soli]

Maybe we need a "technical" section on this forum.