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post #1 of 2 Old 12-19-2018, 01:55 PM - Thread Starter
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Question HDR10 vs YUV420

Hello. I am going to be upgrading my setup to be 4K HDR compatible, but am running into some confusion with HDR standards. I have a Lightberry Ambilight system that I need to migrate over from my old setup, but I need to guarantee I can keep my HDR signal to my new TV when I split the output from the receiver. I have tested that the Xbox One X sends a 4K HDR signal to the receiver, and then passes it through to the TV. My concern is that the Lightberry grabber I'm considering buying won't support HDR10, and I don't know what this YUV420 standard is that the description mentions when it describes HDR. Any help on this would be appreciated.

Here are the basics:

Receiver: Denon AVR-S640HE3
TV: LG 43UK6090PUA
Xbox One X
Lightberry HDMI Kit 5: h_t_t_p_s://

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post #2 of 2 Old 12-22-2018, 03:03 PM
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If it only supports the 420 colorspace then it is pretty limited. It should be able to support the 422, 444, and RGB colorspace as well.
HDR can be using all those colorspaces. Depending on the bitdepth and colorspace though, it can be near the max of the 18Gbps HDMI connection.

The 420 colorspace is typically used on the Xbox because it's sending out 60P. And 420 at 12 bit uses less than 14Gbps of bandwidth over HDMI(10 bit uses around 11Gbps). While if it uses the 422 colorspace at 2160P60 it's using near 18Gbps of bandwidth. SInce it has to be at 12 bits per the HDMI spec. WHich can definitely cause issues when the proper HDMI cables aren't used.

And then 444 can only be 8 bit at 2160P60. WHich is still near the 18Gbps limit. But to properly show HDR10, you need 10 or 12 bit depth. Which is why 420 or 422 is used on the Xbox at 2160P60.

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Last edited by aaronwt; 12-22-2018 at 03:12 PM.
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Reply High Dynamic Range (HDR) & Wide Color Gamut (WCG)

ambilight , hdr , yuv420

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