(if googling, also try the spellings "balun", "bailun" and oh I forget how many other ways I've seen it spelled)
The HDMI extenders are - generally - video encoder/decoder appliances: think MPEG or H.something-or-other. So depending on the model, the "HDMI" they support can be anywhere from unidirectional 720i to full bidirectional 4k with ARC. Because
it's _almost_ always based on gigabit Ethernet, length is usually limited to around 300'/100m, and the correct spec of cable (Cat5/5e) will help maximize distance, i.e. don't assume using Cat6/6A/7 will be better without testing that assumption.
I remember a thread about HDMI length limits here in the distant past; I think Trevor has successfully run 1080p over 50' cables but possibly with not quite 100% reliability?
-Adam
From: Roundtable <roundtable-bounces@muug.ca> on behalf of Greg Manning <a31ford@gmail.com>
Sent: Thursday, March 9, 2023 9:06:11 AM
To: Continuation of Round Table discussion <roundtable@muug.ca>
Subject: Re: [RndTbl] HDMI extenders
I do a lot of work with CCTV equipment and the older equipment used to use coax and you could use an extender it was there was a baulin Transformer at each end and you could use just twisted pair between them I have cameras that are at a thousand
feet of cable that have a baulin each end and the video spectrum is still just as clear as the camera that's 4 ft away from the from the recorder so I would have to say yes the twisted pair extenders were good as long as you have good baulin's in each end
to adapt them.
Here's another question I was going to ask at the meeting but forgot about. It's not UNIX/Linux-related but I was hoping for some input.
Does anyone have experience with HDMI-over-Ethernet extenders? Do they work? Do the less-expensive ones work? :-) Should I just get a really long HDMI cable? What's the upper length limit for HDMI cables (1080p)? It would be under 50 ft.
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