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User profile for user: TheSpinnin
TheSpinnin Author
User level: Level 1
9 points

Does anyone know how to raise the chrominance of the Apple New Apple TV 4K from 4.2.2 to 4.4.4?

Yesterday, June 4, 2021, I bought a new Apple TV 4K device at the Apple Store

My disappointment has come when I have verified that with 4K HDR at 60 Hz the chrominance is 4.2.0 and at most 4.2.2.

I have tried the different HDMI 2.1 cables from Belkin (Ultra High Speed recommended by Apple) and also another one with a higher data rate the KabelDirek Ultra High Speed (4K at 120 Hz, 8K at 60Hz and 10K at 30Hz at 48 Gbit / s and UHD II) (Maximum functionality: HDMI 2.1 standard supports 48Gbit / s UHD-II resolutions, such as 7680 × 4320 (8K) or 10240 × 4320 (10K), 3D video, 48-bit colors and functions such as Dynamic HDR / HDR10 + , VRR, ALLM, HFR and eARC (Dolby Atmos / DTS: X) but none of them achieve the 4.4.4 chrominance.

Does anyone know how to get this Chrominance upgrade to 4.4.4?


Thanks

Apple TV, tvOS 14

Posted on Jun 5, 2021 8:37 AM

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User profile for user: Urquhart1244
Urquhart1244
Community+ 2024
User level: Level 10
143,460 points

Posted on Jun 5, 2021 1:19 PM

All digital streaming video is 4:2:0 chroma, no matter what equipment or cables or settings. Upscaling the chroma to 4:4:4 just uses more bandwidth for the exact same information.

That being said, the Apple TV settings reflect what is available throughout the whole HDMI chain: only valid options are shown. If any one component uses HDMI 2.0 and the rest HDMI 2.1, then the HDMI 2.0 bandwidth is available, which will restrict some video settings.

So it does matter what your TV (and optional AV receiver) allow for HDMI connections as well.

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User profile for user: Urquhart1244
Urquhart1244
Community+ 2024
User level: Level 10
143,460 points

Jun 5, 2021 1:19 PM in response to TheSpinnin

All digital streaming video is 4:2:0 chroma, no matter what equipment or cables or settings. Upscaling the chroma to 4:4:4 just uses more bandwidth for the exact same information.

That being said, the Apple TV settings reflect what is available throughout the whole HDMI chain: only valid options are shown. If any one component uses HDMI 2.0 and the rest HDMI 2.1, then the HDMI 2.0 bandwidth is available, which will restrict some video settings.

So it does matter what your TV (and optional AV receiver) allow for HDMI connections as well.

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Does anyone know how to raise the chrominance of the Apple New Apple TV 4K from 4.2.2 to 4.4.4?

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