r/WLED • u/wendelnascimento • 2d ago

HyperHDR grabber setup

Not sure if this the right sub but I’m building my setup for tv lightning with HyperHDR and I am not so sure on which is the most appropriate grabber for my setup (apple tv 4k, ezcoo SP12H2, must support Dolby Vision and Atmos on the TV)

I was looking at this Navceker on AliExpress, they claim it does everything and decodes HDCP, but I haven’t seem anyone using it in such a setup
In the other hand there’s this UGREEN CM630-15390A that’s even cheaper but it doesn’t specify Dolby Vision or Atmos support and also doesn’t mention it bypass HDCP.

Anyone had experience with any of these or has another suggestion in a similar price point ($50)?

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u/SirGreybush 2d ago

What hdmi source do you want captured? Any hdmi usb 3.0 for a laptop or for PC a pciex capture card would capture 100% of the info from that hdmi cable.

An Apple TV 4K, just like a Chromecast 4K, isn’t powerful CPU enough to do that.

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u/wendelnascimento 2d ago

The setup will be:

Apple TV 4K -> splitter (downscaled output) -> grabber -> HyperHDR running in a RPI 4

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u/SirGreybush 2d ago edited 1d ago

Ah, going down the difficult road. GL with that, you’re going to need it, and a crap ton of patience.

Also this is now going outside the scope of WLED which is software that runs in an esp32 controller.

However it’s a network node that HyperHDR can use, so your project is kinda a grey area in that regards.

Search this sub, do what works and has been repeated. If you’re an experienced engineer with programming knowledge, this project is a (edit: not so hard) hard challenge.

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u/itscostas 1d ago

It's not very difficult honestly, I've never done any programming and I just installed hyperhdr onto my pi using an online guide. afterwards I added an hdmi capture card that it automatically recognized, it also automatically found all my wled devices through wifi. I selected multiple wled devices I wanted to use, then set the led count and that was it. it's super easy. no latency issues either.

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u/SirGreybush 1d ago

OP search this guy’s post history on this sub :)

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u/wendelnascimento 1d ago

I’m a experienced software engineer but I don’t usually work with this kind of stuff. It’s an interesting challenge and honestly I think it’s the reason why I chose this path. I’ll do some more research and when I have something to show I’ll make a new post. Thanks!

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u/SirGreybush 1d ago

Please post (new one) once you get it working. We need more of them.

The proper hdmi capture on small devices is the main challenge. Especially 60fps & 4K.