“For those using this with Xbox One X, while using HDR, do you have Allow YCC 4:2:2 on? Also, do you use RGB Full or Limited? Thanks”
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The checkbox in your Xbox One X for YCC 4:2:2 is for the Chroma Sampling which is a type of compression that reduces the color information in a signal in favor of luminance data. (YCC is YCbCr)This reduces the bandwidth without significantly affecting the picture quality. You may be familiar or have seen a Chroma Sampling of 4:4:4. A signal with a Chroma Sampling of 4:4:4 has no compression and it will transport both luminance and color data. Chroma 4:2:2, on the other hand, is a 4 x 2 array of pixels and has half the Chroma of 4:4:4. The 4:2:2 signal will have half the sampling rate horizontally, but will maintain full sampling vertically.In video games, while some PC games that have a strong focus on text might suffer from using chroma subsampling, most of them are either designed with it in mind or implement it within the game engine. Most gamers should therefore not worry about it. Unless checked, your gaming console will be outputting at 4:4:4, with zero compression and 8-bit displays are able to handle this and will receive the full beauty of the signal. Where 4:2:2 comes into play with your gaming console is using it for Blu-Ray support and gaming on displays that are true HDR10. For HDR gaming, simply turn on HDMI Ultra HD Deep Color for the HDMI port that you connect your gaming console to on the LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK600-W and select HDR Game in the Picture Mode settings. With regards to RGB Full or Limited, 'Limited' refers to the values being 'limited' to 16-235 and not the Full 0-255 scale. With TV and Movies, it leaves them untouched because they are already in the 16-235 range. RGB Full will display video games and other 0-255 content at the correct 0-255 range. You should always use the RGB Limited setting with a TV. PCs are different and use a range from 0-255. There is no data below 0 or above 255 with an 8-bit video signal as there are only 256 possible values. When you play a video game, it will convert the 0-255 range to the 16-235 range. If it did not do this, shadow and highlights would be pure black or pure white, and the image will look off. You aren’t losing anything by using RGB Limited, but if you use RGB Full with a TV you are losing details. On a computer monitor, you use the opposite approach. RGB Full will display video games and other 0-255 content at the correct 0-255 range. TV, Movies and other video range content expand to use the full 0-255 range of a computer display. If you use RGB limited instead, shadows will be gray instead of black and highlights will be dull. You will not take full advantage of the dynamic range of the PC monitor and content will have a washed-out look...^IFV
Sorry, there was a problem. Please try again later.Thank for you that detailed response. Please correct me if I'm wrong here: Since this is a monitor, I should have my Xbox One X display "FULL RGB". As for sampling, you said "Where 4:2:2 comes into play with your gaming console is using it for Blu-Ray support and gaming on displays that are true HDR10". Since this is an HDR10 display, I should check "Allow for 4:2:2". Would you both statements are accurate? Thank you in advance.
Sorry, there was a problem. Please try again later.So if I have a lg 55 inch with that option of hdr10 and ultra should I use 4:2:2 or keep it off?
Sorry, there was a problem. Please try again later.Hdr is mastered in limited rgb . The Xbox even warns you that Regardless of your display support pcrgb can cause lost highlights. I have the same monitor from lg , I still use low . You don’t want to mess up your hdr , you will just end up with black and less detail . Also you must change the black level on your tv or monitor to low . HighOr full is pcrgb , low is limited rgb . Everything should match as far as settings that apply to both . Also leave it on 8 bit and as far as ycc422 . I leave it on but others say only use it if you have a problem displaying 4k
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