I've got a 15 meter hdmi cable in my wall from a build 5 years ago and it does 4k just fine from my htpc.
As a sparky though I'd would STRONGLY suggest a suitable conduit for hdmi future proofing... It'll prob need to be 32 mm conduit though which will be tricky to install.
That is good to know that you were having success with that cable, I was looking at a 10m one but wasn't willing to commit, without buying one that I could easily return.
What do you have at each end of the cable and what 4K sources do you use out of interest?
With my current cable I found playing a 4k HD disk would play fine on my TV from an 'Xbox One X' but if I tried to game on the Xbox the signal would fail.
I have an Apple TV 4K via an Anthem AVR and have no issues getting Dolby Vision.
To the OP, I wouldn't worry to much about 8K support for some time yet. While there may be some TV's that support it I would guess that only the inbuilt apps will support 8K at first and even that will be some time off from now. It will likely take many years to get sources that support dishing out 8K content. Is there even a disk format for 8K? Personally I doubt you will see broad use of 8K content sources in the next decade. But that's just my personal opinion.
So far this is the best i've found - HDMI 2.1 48gbps, 8k @60 hz. Its crazy pricey but since I cant run conduit putting this in will be cheaper than ripping out the jib later
floydie: Maybe run extra cat6 or fiber for baluns?
I'd do this while it's open. Do yourself two drops of cat6 encase you take up a balun setup. Would be handy to use as a draw wire worst case down the track.
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The problem is you have no way to test that it actually transmits 8K and as another poster said, the standards haven't yet been finalised. That means this could be an expensive way to still only have 4K.
why a weird path? can you not do a drop from ceiling or under floor then run to the other end and do the same. This is how I've run mine so pulling a new one is fairly straight forward.
The problem is you have no way to test that it actually transmits 8K and as another poster said, the standards haven't yet been finalised. That means this could be an expensive way to still only have 4K.
I'm not quite sure in what way the standards haven't been finalised.
The HDMI 2.1 spec was fixed at the end of 2017 so it should certainly be possible to buy a 2.1 rated cable (and 48Gbps is the magic number as far as I can tell).
Whether your source and sink support some or all of the HDMI 2.1 features, including 8K, is a separate issue.
Totally agree with the point that how do you know that any cable can meet its marketing claim over 15m, though.
That is the exact cable I purchased.... it works really well even for the most demanding 4k60p signals, but on the odd occasion (once every 2 weeks?) I get some kind of issue between the projector/av receiver / apple tv and the signal gets messed up ... I don't think it is a cable problem, rather something to do with HDCP sync. And switching the av receiver off/on fixes it right away.
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