Chroma subsampling and Color Spacing: Which is better and why? - Blu-ray Forum

Canada · 10-24-2013, 02:58 AM

Chroma subsampling

Colour Spacing: Which is better and why?

8 bit 4:4:4
12 bit 4:2:2

Canada · 10-25-2013, 04:42 AM

Wendell R. Breland 12 bit, 4:2:2 because there are many more steps between black and white + Deep color. Bit depth determines number of steps, X:X:X determines color to luminance sample ratio.

IMO, there is little chance that we will see more than 8 bit, 4:2:0 in the near future for home use. As it stands H.265 (HEVC) will need extensions ratified in order to accommodate anything greater than 8 bit, 4:2:0.

ADD: Also, the more bits you have the greater the S/N ratio. 8 bit ≈ 48 dB, 10 bit ≈ 60 dB, 12 bit ≈ 72 dB. In the real world these numbers will be different but you get the jest of it.

10-24-2013, 02:58 AM	#1
Canada Blu-ray Champion Top contributor Member since:Mar 2007 Location:Victoria, BC Home Theater Gallery:17 4K collection:141 Blu-ray collection:986 DVD collection:34 Blu-ray reviews:41	Chroma subsampling and Color Spacing: Which is better and why? Chroma subsampling Colour Spacing: Which is better and why? 8 bit 4:4:4 12 bit 4:2:2 Last edited by Canada; 10-24-2013 at 03:01 AM.

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10-25-2013, 04:42 AM	#2
Canada Blu-ray Champion Top contributor Member since:Mar 2007 Location:Victoria, BC Home Theater Gallery:17 4K collection:141 Blu-ray collection:986 DVD collection:34 Blu-ray reviews:41	Wendell R. Breland 12 bit, 4:2:2 because there are many more steps between black and white + Deep color. Bit depth determines number of steps, X:X:X determines color to luminance sample ratio. IMO, there is little chance that we will see more than 8 bit, 4:2:0 in the near future for home use. As it stands H.265 (HEVC) will need extensions ratified in order to accommodate anything greater than 8 bit, 4:2:0. ADD: Also, the more bits you have the greater the S/N ratio. 8 bit ≈ 48 dB, 10 bit ≈ 60 dB, 12 bit ≈ 72 dB. In the real world these numbers will be different but you get the jest of it.

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