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noggin14,378 posts since 26 Jun 2001
There are both HDMI over Ethernet and HDMI over Cat5 (aka Ethernet cable) solutions - but beware - they aren't the same thing.

HDMI over Ethernet will compress the video (and also the audio) to a much lower bitrate, introducing a small amount of latency and a potentially noticeable quality loss. This is because the video is compressed and carried as IP packets (either UDP or TCP) over an existing Ethernet network.

HDMI over Cat 5 just uses the Cat 5 (or Cat6) cable that is often used to carry Ethernet to carry HDMI - but doesn't use any Ethernet IP network protocols, and instead uses the cable just as a carrier for the HDMI signal. It is often not compressed and has less latency.

I've not used either in anger - but know people who have used both.
Ne1L C995 posts since 11 Sep 2011
Thanks for that. I'm looking at this setup

1. Sky Q via HDMI over Cat5/6 via powerline to Samsung connected to HDMI over Cat 5/6 via powerline.
dosxuk4,189 posts since 22 Oct 2005
Yorkshire Look North (Yorkshire)
That idea would limit you to the HDMI over IP boxes, which cause visible compression artifacts even on their highest quality. But then I'm yet to see a powerline set up with anywhere near sufficient bandwidth to carry HDMI over IP.

You didn't mention powerline before - if the HDMI to Cat5 stuff is just a way to convert it to a connector that will work with powerline plugs, give up now!
Neil Jones5,342 posts since 23 Dec 2001
Central (West) Midlands Today
I suppose it depends on the room and where the Sky cables come in (but I believe they are extendible):
https://helpforum.sky.com/t5/Sky-Q/Extending-Sky-Q-satellite-cable/td-p/2982569

So you could either extend the Sky Q cables or get longer HDMI cables (and worry about hiding the cables) but there is a finite limit to HDMI length because it will degrade over distance. Some cables claim to be able to get as far as 30m but that's dependent on the quality of the cable. Boosters may be available. The Sky Q cables from the LNB could be replaced and can be quite lengthy (bear in mind some properties you have the box in the front room and the dish on a wall with the cable running either over the roof or around the side) so that could be another option.

I feel converting things back and forth between various standards is going to get complicated and messy.
bilky asko5,486 posts since 9 Sep 2006
Tyne Tees Look North (North East)
I suppose it depends on the room and where the Sky cables come in (but I believe they are extendible):
https://helpforum.sky.com/t5/Sky-Q/Extending-Sky-Q-satellite-cable/td-p/2982569

So you could either extend the Sky Q cables or get longer HDMI cables (and worry about hiding the cables) but there is a finite limit to HDMI length because it will degrade over distance. Some cables claim to be able to get as far as 30m but that's dependent on the quality of the cable. Boosters may be available. The Sky Q cables from the LNB could be replaced and can be quite lengthy (bear in mind some properties you have the box in the front room and the dish on a wall with the cable running either over the roof or around the side) so that could be another option.

I feel converting things back and forth between various standards is going to get complicated and messy.


Re-reading the original post, it appears Ne1L C only wants to have the box and TV at opposite ends of a room. I think a longer HDMI cable and some cable trunking is the way to go.
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Ne1L C gave kudos