Hdmi cables

stuie

stuie

stuie

Soldato
Joined
29 May 2012
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Yes I know these things are all the same however

Oled plugged into yamaha receiver via a high speed although probably 1.4 5m hdmi cable.

Mostly everything I plug into the amp works including 4k netflix via v6 box.

The problems start with more advanced things like arc which just doesn't work, also if I turn on 4k processing on the amp I get masses of artefacts to the point where I lose signal completely same thing happens if I force 2160 on the v6 box.

My guess is it's the cable as it's a brand new tv and amp.

I can't move the amp or tv closet so I need a better than a 5 quid ebay cable to get things working consistantly.

Anyone got experience of decent but also value 5m cables?
 
The thing is that all cables aren't the same. UHD exposes that quite ruthlessly, 1080pHD less so. With UHD at distance - and yes, 7m is considered a long distance for a UHD signal - the whole video chain is put under strain. The quality of the source devices, any repeater device (your amp) and the HDMI input on the TV all become a factor. For that reason you could well find that a cable which works well for someone else just doesn't work for you; and that could be because of a different combination of equipment, or even some variance in the manufacturing process of the cable itself.

Unless you have a good reason to switch on 4K upscaling/processing, then I'd recommend you leave it off. i.e. if Virgin's V6 box delivers a 4K UHD signal from Netflix without the need for 4K processing to be on, then leave it off. The TV already upscales any non-UHD signals in order to display them correctly on the panel.

Likewise, if the Yam amp passes all UHD signals 'as is', then it's pointless having it upscale 1080p to UHD since the TV will do that anyway.

HDMI cables that are guaranteed to work even at the highest colour depth and 60Hz refresh rates even with marginal source and sink devices are not cheap. Something like the hybrid fibre/copper cable by RuiPro works out a little over £10 per metre. There are cheaper options, but you lose the guarantee of performance. HDMI Certified Premiums cables are where you should start looking. The rain forest has stuff for less than 2 metres worth of the RuiPro product. Take a look at the SlimHDMI product. However, be prepared for a bit of to and fro returning gear after you've tested at a range of bandwidths.
 
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Yeah pretty much what Lucid said.

I had to run a 10m HDMI cable round a room into a hdmi switch and all these advertised ones that were cheaper never worked properly. As soon as I put apple tv into it's highest format, or tried Sky on UHD, the signal just cut out.

I ended up chucking £100 on a fibre optic cable:

https://www.amazon.co.uk/UGREEN-Cab...e+optic+cable&qid=1554365229&s=gateway&sr=8-5

Then ran alongside this switch:

https://www.amazon.co.uk/XOLORspace...&qid=1554365265&s=gateway&sr=8-11-spons&psc=1

Took a while to find a switch that could actually achieve max image qualities (loads advertised did not work), but happy to say everything is absolutely spot on now. Just an option for you if you needed multiple HDMI cables, you could just get the one 5m fiber optic cable into a switch, then get normal 1/2 meter high speed cables to work out cheaper than buying say like 5 fiber optic ones.
 
I've got a cheapo 15m cable from Amazon, just bought the cheapest that had good reviews. Works well at 4K HDR with a splitter too. Guess it's just down to if the cables are capable of what they say they are, which is why I always go off the reviews.
 
I've recently had problems getting 4k 60hz 4:4:4 to run reliably over an 8m premium cable. This pushes 17.82Gbps through the cable, very close to the HDMI 2 bandwidth of 18Gbps.

Rather than start trying various options, buying loads of cables and sending stuff back, I just went with a Ruipro fibre cable and haven't had a problem since.

They're expensive but to me it was worth it to avoid all the messing and testing. I got a 12m one (I only needed 8m) as the difference in cost between the lengths is small and it gives me options for reuse in the future.
 
If only there was an independent certification system for HDMI?
I don't know, I'd probably call it something like "Premium Certified" or similar.
I would then make sure these cables were tested and approved for 4k/HDR and then issue a certificate, probably in the form of a QR code that potential customers could scan to ensure they were genuine.
Seems like a really good way to remove the guess work. I wouldn't force any manufacturer to join of course, it would be up to them.
But I know, as a customer, I'd then look for that certificate I know it would just work.
 
stoofa said:
If only there was an independent certification system for HDMI?
I don't know, I'd probably call it something like "Premium Certified" or similar.
I would then make sure these cables were tested and approved for 4k/HDR and then issue a certificate, probably in the form of a QR code that potential customers could scan to ensure they were genuine.
Seems like a really good way to remove the guess work. I wouldn't force any manufacturer to join of course, it would be up to them.
But I know, as a customer, I'd then look for that certificate I know it would just work.
Click to expand...

Thanks for you input
 
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