hdmi cable that actually works?

[WCZ]

i'm watching 4k content on my benq projector with a 20m hdmi cable from the source (nvidia shield)

the first hdmi cable I bought was an "8k fiber" one which worked for 3 months then the signal would randomly drop

the second one I bought worked for 1 day

the third one i've just bought doesn't work at all (wish I had tested it before routing it in the walls)

does anyone have any suggestions for a cable which will actually work ? or do I need to buy boosters and such? or is it that the

[clockworks]

WCZ said:

i'm watching 4k content on my benq projector with a 20m hdmi cable from the source (nvidia shield)

the first hdmi cable I bought was an "8k fiber" one which worked for 3 months then the signal would randomly drop

the second one I bought worked for 1 day

the third one i've just bought doesn't work at all (wish I had tested it before routing it in the walls)

does anyone have any suggestions for a cable which will actually work ? or do I need to buy boosters and such? or is it that the

Can you just put the Shield closer to the projector?
Maybe buy a second Shield TV (cheaper version) and stick that by the projector. Remote is Bluetooth, wifi connection, so only needs a power cable.

[silentbrown]

WCZ said:

does anyone have any suggestions for a cable which will actually work ? or do I need to buy boosters and such? or is it that the

Look for an HDMI certified ultra high speed OPTICAL cable.

https://www.hdmi.org/spec21sub/ultrahighspeedcable

[Mr Pointy]

A 20m HDMI cable that works isn't cheap:
https://www.lindy.co.uk/cables-adapters-c1/audio-v...

[ARHarh]

Its more than likely because HDMI is only certified for 15m long cables. For 4k is recommended to not exceed 3m. This does not mean a longer cable will not work, just that at those sorts of lengths you are likely to come across problems.

[WCZ]

I might have to rethink this then as suggested, it's a logistical nightmare though because the cabinet is quite far away from the projector and the source also gets split to the tv + soundbar

[ARHarh]

You can get wireless HDMI things, never tried them so have no idea if they work or not.

[tonyg58]

Have you though of using an HDMI over Cat 6 system?

Lots of them out there.

Ideally pick one that only needs power at the transmit end as it makes things neater at your projector end.

[silentbrown]

ARHarh said:

You can get wireless HDMI things, never tried them so have no idea if they work or not.

4K/60Hz Video on HDMI needs about 12 Gb/s. You're not going to get that on wireless easily.

I suspect most of the wireless things use heavy compression, anyway...

[Digger]

For that length, optical.

https://www.amazon.co.uk/dp/B092MWQGSF

https://www.amazon.co.uk/dp/B098NRHLKD

[donkmeister]

Digger said:

For that length, optical.

https://www.amazon.co.uk/dp/B092MWQGSF

https://www.amazon.co.uk/dp/B098NRHLKD

That's pretty interesting - when I was building my home cinema set up "hybrid" cables were state of the art with the video signal over fibre and the other signalling over copper. But it seems they've all gone to full optical.

[Rick101]

Agreed Optical.

During my projector install I queried the price of the HDMI cable as I knew I could pick one up easily for under £30.
Chap explained he had quoted for Optical as signal loss over that length (15M) would require it.

Never had a single issue.

[Gary C]

WCZ said:

i'm watching 4k content on my benq projector with a 20m hdmi cable from the source (nvidia shield)

the first hdmi cable I bought was an "8k fiber" one which worked for 3 months then the signal would randomly drop

the second one I bought worked for 1 day

the third one i've just bought doesn't work at all (wish I had tested it before routing it in the walls)

does anyone have any suggestions for a cable which will actually work ? or do I need to buy boosters and such? or is it that the

20 meters is outside the spec of HDMI for 4k ?

Get a HDMI to ethernet and back again over Cat 6 should do it.

[Gary C]

silentbrown said:

4K/60Hz Video on HDMI needs about 12 Gb/s. You're not going to get that on wireless easily.

I suspect most of the wireless things use heavy compression, anyway...

Gb/s ?

[cobblex]

My BenQ W4000i has a way of boosting the signal via the option menu using the HDMI equalizer. Before that the HDMI signal was very slow to appear and occasionally cut out. It may only be available on their newer projectors though (my previous Benq W2700 didn't have the option, but then it didn't seem to have an issue with the HDMI length)

[silentbrown]

Gary C said:

Gb/s ?

gigabits per second. (3840 pixels x 2160 lines x 60 Hz x 24 bits/pixel is a starting point)

Uncompressed video is serious stuff to move around the place.

Cat 6 is nominally only 10 Gb/s, so 4K/60Hz is a stretch even with that.

[S600BSB]

I always use AudioQuest hdmi cables. Not cheap, but work well over long cable lengths.

[Gary C]

silentbrown said:

Gary C said:

Gb/s ?

gigabits per second. (3840 pixels x 2160 lines x 60 Hz x 24 bits/pixel is a starting point)

Uncompressed video is serious stuff to move around the place.

Cat 6 is nominally only 10 Gb/s, so 4K/60Hz is a stretch even with that.

Yes, I know what Gb/s is just hadn't clicked about the sheer size of uncompressed 4k video (in my defence most of my computers are doing well if they have more than 64k of RAM )

[Digger]

S600BSB said:

I always use AudioQuest hdmi cables. Not cheap, but work well over long cable lengths.

How much would one of their 10m optical cables be? I cannot find online yet.

[silentbrown]

Digger said:

How much would one of their 10m optical cables be? I cannot find online yet.

I hope you're sitting down...