DolbyVision Long HDMI cable Apple 4K 2021

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DolbyVision Long HDMI cable Apple 4K 2021

I have the 2021 4K Apple TV. It has the same issue as the previous Apple TV 4K- should the HDMI cable be longer than say 2m (6 ft), the Apple TV will not output into Dolby Vision . I can connect the Apple TV directly to the TV with the Belkin UltraHD High Speed 4K HDMI Cable (2m) and it will get Dolby Vision. When I connect via my 4K Dolby Vision compliant receiver to the TV, the maximum quality I can get is 4K HDR (and that's a crapshoot).

My AV guy says he has never been able to get Dolby Vision working when the cable is longer than 6 ft and he installs about five Apple TVs a week.

Has anyone got a fix as I don't want to run another HDMI and power cable to the TV directly with the Apple TV connected. I just want one one HDMI in from the receiver?

I raised this issue with Apple Support and it has logged it.

Apple TV, tvOS 14

Posted on May 24, 2021 10:56 AM

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Answer 1

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BevMeister Author

Level 1

10 points

May 31, 2021 9:35 AM in response to BevMeister

Finally enabled DolbyVision. I worked out the culprit was the Sony TV that had a setting called “HDMI Signal Format” buried under Settings>Watching TV>External Inputs>HDMI signal format. It’s set to default to Standard format so I had to enable the Enhanced Format which allows 4K signals. I would love to know the logic of having standard format as the default given it’s a OLED 4K TV. Never mind, I’m not an engineer at Sony!

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Answer 2

May 26, 2021 7:05 AM in response to BevMeister

I suggest using a fiber optic HDMI 2.0/2.1 cable. They cost a bit more, but they can work over longer distances.

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Answer 3

karina184

Community Specialist

May 25, 2021 10:43 AM in response to BevMeister

Salutations BevMeister,

Thank you for taking the time to visit the Apple Support Communities! We understand that you are experiencing an issue with your Apple TV’s ability to receive Dolby Vision. We will be honored to assist you!

Please follow the article below for additional guidance. (Also, review section 4 of this article below titled “Check your HDMI cable”)

About 4K, HDR, and Dolby Vision on your Apple TV 4K

If you are still having trouble, please visit our Apple TV Support site and our TV Support Communities.

Have a wonderful day!

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Answer 4

lkrupp

Level 7

23,809 points

Jun 8, 2021 7:53 AM in response to BevMeister

Thank you, BevMeister, I was pulling my hair out having just upgraded my entire system to 4K, including a new Sony XRF65X90J Bravia, a new Denon AVR-S960H AVR, the new Apple TV 4K 2, and the best HDMI cables Best Buy had. Absolutely no joy enabling Dolby Vision even though all the hardware and cables supported it.

After reading your last post I went snooping in the Sony’s settings and, just like you, deep down the menu tree I found it! Just like that, Dolby Vision enabled almost instantly.

Like you, I am incredulous that Sony didn’t make this option more visible and easy to change. Again, thank you for the detective work.

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Answer 5

BevMeister Author

Level 1

10 points

May 25, 2021 12:02 PM in response to karina184

Thanks for this.

Yes every component is compliant- HDMI cables (HDMI 2.1), TV (Dolby Vision HDCP 2.3 and eARC) and AV Receiver (Dolby Vision and HDCP 2.3). This is not an isolated incident- our AV technician says this happens to every Apple TV 4K he has installed with a long HDMI cable.

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Answer 6

Brian_P7

Community Specialist

May 25, 2021 5:00 PM in response to BevMeister

Hi BevMeister,

Thank you for taking the time to complete the steps in the articles. If you are still experiencing issues, please contact Apple Support for further assistance.

Have a joyful day!

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DolbyVision Long HDMI cable Apple 4K 2021

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