Are there any digital quality loss in a 20meter long HDMI cable?

[Stears555]

Hello!


Are there any digital quality loss in a 20meter long HDMI cable?

I would like to connect it to my camcorder.

Is it possible?

[jagabo]

I answered your PM about this but I'll repeat it here:

Where analog cables give you slowly decreasing quality as length increases, digital transmission retains quality until the two ends can't communicate any more and you get nothing. So, for the most part, HDMI cables will either work or they won't. The line between working and not working is very thin and the intermediate symptoms are very obvious, sparkling pixels:

http://www.cnet.com/news/why-all-hdmi-cables-are-the-same/

Different devices have different tolerances for signal strength and signal distortion so it's impossible to say if that cable will work with your setup. You'll just have to try it.

[KarMa]

http://www.amazon.com/AudioQuest-Diamond-52-49-Braided-Cable/dp/B00IL3TZSQ

I find Diamond HDMI cables give me the cleanest signal and would not watch video from anything else.

[DB83]

Maybe I miss something.

But from the pic posted by the OP, what has HDMI to do with Ethernet ?

[redwudz]

I use a 50 foot HDMI cable (15m) a bit shorter than your 20m one and have no problems. It's a heavy cable, about 1cm in diameter and fairly stiff.
I would just recommend to stay away from slim cables such as 50mm for that long of a run.

[usually_quiet]

Maybe I miss something.

But from the pic posted by the OP, what has HDMI to do with Ethernet ?

HEC (HDMI Ethernet Channel) was added as an optional feature with HDMI 1.4. It would allow HDMI to carry data, but I have not seen any devices that use this feature.

[Cornucopia]

If you need longer runs, you could use HDbaseT.

Scott

[DB83]

Maybe I miss something.

But from the pic posted by the OP, what has HDMI to do with Ethernet ?

HEC (HDMI Ethernet Channel) was added as an optional feature with HDMI 1.4. It would allow HDMI to carry data, but I have not seen any devices that use this feature.

Thanks. Bit of a no-brainer then.

Just imagine someone going in to a store and ask for a long Ethernet cable. The less smart assistant points to this and the end-user then wonders why it does not fit when he gets it home.

[jagabo]

Just imagine someone going in to a store and ask for a long Ethernet cable. The less smart assistant points to this and the end-user then wonders why it does not fit when he gets it home.

It will fit. There's no difference in the connectors. Ethernet is passed over a previously unused pin and the hot plug detect pin.

[KarMa]

Just imagine someone going in to a store and ask for a long Ethernet cable. The less smart assistant points to this and the end-user then wonders why it does not fit when he gets it home.

It will fit. There's no difference in the connectors. Ethernet is passed over a previously unused pin and the hot plug detect pin.

He is talking about an actual Ethernet port. And an assistant assuming they mean an HDMI cable.

[DB83]

Just imagine someone going in to a store and ask for a long Ethernet cable. The less smart assistant points to this and the end-user then wonders why it does not fit when he gets it home.

It will fit. There's no difference in the connectors. Ethernet is passed over a previously unused pin and the hot plug detect pin.

He is talking about an actual Ethernet port. And an assistant assuming they mean an HDMI cable.

Yes. That is what he meant.

I have not tried plugging any HDMI cable in to a standard Ethernet port.

[usually_quiet]

Even more confusing for less knowledgeable store employees, there are HDMI extenders which use two Ethernet cables to carry an HDMI signal. HDBaseT is a technology used for this, but I have seen some inexpensive devices which didn't say anything about HDBaseT.

[jagabo]

He is talking about an actual Ethernet port.

Ah, yes. I misread his post. Too early in the morning.

[Cornucopia]

Even more confusing for less knowledgeable store employees, there are HDMI extenders which use two Ethernet cables to carry an HDMI signal. HDBaseT is a technology used for this, but I have seen some inexpensive devices which didn't say anything about HDBaseT.

Unless it explicitly refers to the HDbaseT standard, it isn't true HDbaseT. I can attest firsthand that it works great and is relied on for mission-critical installations with long runs.

Scott

[Stears555]

http://www.amazon.com/AudioQuest-Diamond-52-49-Braided-Cable/dp/B00IL3TZSQ

I find Diamond HDMI cables give me the cleanest signal and would not watch video from anything else.

What does clean signal mean? Other HDMI cables give worse picture quality?

[jagabo]

What does clean signal mean?

He's talking about how clean your wallet is going to be after you buy them.

[Keyser]

http://www.amazon.com/AudioQuest-Diamond-52-49-Braided-Cable/dp/B00IL3TZSQ

I find Diamond HDMI cables give me the cleanest signal and would not watch video from anything else.

C'mon people. You're pulling my leg. Do you really expect me to believe someone would pay 14K for a simple cable?

[usually_quiet]

C'mon people. You're pulling my leg. Do you really expect me to believe someone would pay 14K for a simple cable?

AudioQuest makes products for audiophiles with deep pockets.

[jcmccorm]

I like that they are directional too.

Cary