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Topic:
Would you rid the world of HDMI if you could and what would you replace it with?
This thread has 32 replies. Displaying posts 16 through 30.
Post 16 made on Monday March 6, 2017 at 23:02
InAMinute
Long Time Member
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42
Yes!

With proper implementation of DLNA in all media devices. Monitors and recievers with built in 8k capable HEVC decoder chips. Nbase-T network capable NiC, Wol magic packet a must.

It's heading this way anyways.
JAP
HDbitT
HDbaseT encapsulated IP packets.
Post 17 made on Tuesday March 7, 2017 at 02:43
ErikU
Long Time Member
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151
Coming from the broadcast world... On the occasions we have to deal with HDMI in high-end AV, it just seems totally crazy.

Without a doubt: SDI over coax. Mini coax will go 300ft. The thicker stuff can go further. It's fast, easy, and fairly cheap to terminate. Much faster and easier to work with than CAT6. Tons of very high quality routing and distribution products. Easy/cheap conversion to/from HDMI and fiber.

Return channels, bi-directional control, and even HDCP could be implemented if the industry wanted to. Lots of history of modulating additional signals.

I don't know the details of how JAP works, but keep in mind the following bandwidth requirements (all data must arrive on time):

HD: 1.5 Gbps
UHD/4k: 12 Gbps

Not sure how you can do that over ethernet without compression and some latency.
Post 18 made on Thursday March 9, 2017 at 12:06
BobL
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HDMI was terrible standard from day one. They did not take physical properties into account and they did not plan for the future. let's look at it.

HDMI 1.0 5gbs - I could have told you then it would need to be faster in the future.
Can't field terminate the cable - Really! WTF? Who thought of that?
Non locking connector - Again, Really! WTF? Who that of that?
Limited distance - Again, Really! WTF? Who that of that?
Have to upgrade your other equipment every time you buy something with the features of the newest version - Really! I know who thought of that.

HDCP - Do we connect two devices together and copy them like we used to do with VCRs? If we want to copy something we get the info off the disc or store it on a hard drive and hack the encryption. Copy protection as a cable standard not really needed today.

HDMI was built off an existing technology to keep it simple. HDMI was built off DVI which was built off 8B/10B. So if we go back 15 years and want to build something based on existing technology that could solve the above physical problems and handle the bandwidth needed for at least the next 10-20 years for a cabling standard. The answer is be easy.

Mario gets the gold star: FIBER
Post 19 made on Thursday March 9, 2017 at 15:50
rmalbers
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777
This is getting to be a real killer: "Have to upgrade your other equipment every time you buy something with the features of the newest version - Really! I know who thought of that."
It been like a two or three year cycle for Home Theater receivers and now with eARC, 4K, etc. another round is coming, pretty soon even the hard core consumers are going to get mad buying yet another new receiver.
Post 20 made on Saturday March 11, 2017 at 18:42
andrewinboulder
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On March 6, 2017 at 11:34, alihashemi said...
We haven't had nearly as many issues in with HDMI as reported by some (or maybe most) members here.

What brands/devices are causing you guys the most issues? How long are the runs that cause you guys issues on average?

I'd really be curious to know.

I'm fine with HDMI but If I were to replace it with something it'd be Ethernet. JAP is pretty cool but I've yet to have a chance to try it. What'd be awesome is if all devices (sources and displays) could plug into a network (this would either be the same as the house network or a separate network altogether). Then each display could choose to poll from a source on that network. You'd have easy to terminate cabling and it'd be through a standard all (hopefully) installers are already familiar with.

Far-fetched idea, though!

What are you using for HDMI extenders if there is nothing but Cat5e in place between a remote TV and AV receiver in a surround system?

What are you using for Video distribution?
Post 21 made on Saturday March 11, 2017 at 20:57
alihashemi
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On March 11, 2017 at 18:42, andrewinboulder said...
What are you using for HDMI extenders if there is nothing but Cat5e in place between a remote TV and AV receiver in a surround system?

[Link: zektor.com]

What are you using for Video distribution?

Crestron DM
Ali Hashemi
Post 22 made on Saturday March 11, 2017 at 21:02
Fins
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None of you have beat unicorn hair treated with fairy dust.
Civil War reenactment is LARPing for people with no imagination.

Post 23 made on Saturday March 11, 2017 at 22:48
andrewinboulder
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On March 11, 2017 at 20:57, alihashemi said...
[Link: zektor.com]

Crestron DM

gotcha

There it is again. Crestron DM. I think that is a big reason you haven't had a lot of the same issues, at least as far as video distribution goes.
Post 24 made on Sunday March 12, 2017 at 00:33
alihashemi
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On March 11, 2017 at 22:48, andrewinboulder said...
gotcha

There it is again. Crestron DM. I think that is a big reason you haven't had a lot of the same issues, at least as far as video distribution goes.

To be honest, we've done HDMI distribution with Key Digital as well and I will admit that their matrices can be wonky. We had one we even had to periodically reset using the Bluebolt scheduler just to make sure it would work after long periods of not using it. But as far as Crestron and Zektor go, we haven't had too many issues.
Ali Hashemi
Post 25 made on Sunday March 12, 2017 at 04:40
crosen
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As I understand it, the original sin with HDMI was basing it on twisted pair copper. It's just too fragile for such high throughput real time data transfer.

Maybe differential signal processing is advancing faster than video bandwidth requirements, and HDMI will settle down. If not, then HDMI needs a new physical medium. Fiber if it's cost effective and installer friendly enough; otherwise coax.
If it's not simple, it's not sufficiently advanced.
Post 26 made on Sunday March 12, 2017 at 09:22
BobL
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On March 11, 2017 at 18:42, andrewinboulder said...
What are you using for HDMI extenders if there is nothing but Cat5e in place between a remote TV and AV receiver in a surround system?

What are you using for Video distribution?

There are no Cat5/6 solutions at the moment that can handle the full 18gbs for 4K with HDR and other features. Unless Brent knows of some. I hear there are some coming but are going to use compression, so there will be some loss of picture quality. I haven't used these but at least they have HDCP 2.2 and it might be your only options for a while.

[Link: metrahometheater.com]

[Link: avprostore.com]

[Link: snapav.com]
Post 27 made on Sunday March 12, 2017 at 10:55
andrewinboulder
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On March 12, 2017 at 04:40, crosen said...
As I understand it, the original sin with HDMI was basing it on twisted pair copper. It's just too fragile for such high throughput real time data transfer.

Maybe differential signal processing is advancing faster than video bandwidth requirements, and HDMI will settle down. If not, then HDMI needs a new physical medium. Fiber if it's cost effective and installer friendly enough; otherwise coax.

Yep

Just was listening to a Q&A with the creators of the new HDMI 2.1 spec. It's amazing to me that these guys rattle off all the great new features for 2.1, which is now going to supposedly push the data rate to 48GBPS and handle 8K, BUT, then you ask them how long the copper based cable can be, and the answer is, "um, yeah, it will be limited to 3-5 Meters. What is wrong with these people????

By the way, FIX the friggin audio delay problems for goddsake.
Post 28 made on Sunday March 12, 2017 at 23:26
alihashemi
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On March 12, 2017 at 04:40, crosen said...
As I understand it, the original sin with HDMI was basing it on twisted pair copper. It's just too fragile for such high throughput real time data transfer.

Maybe differential signal processing is advancing faster than video bandwidth requirements, and HDMI will settle down. If not, then HDMI needs a new physical medium. Fiber if it's cost effective and installer friendly enough; otherwise coax.

Differential signaling doesn't help in terms of speed--its used to reduce noise. HDMI itself is fully differential. I'd hope that all extenders are as well. I'd be surprised if they weren't.

At some point, speed in copper cabling is going to be limited by the parasitic capacitance and inductance in the cabling. We'll have to start using fiber or something else once speeds surpass a certain threshold.
Ali Hashemi
Post 29 made on Monday March 13, 2017 at 00:01
Ernie Gilman
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On March 12, 2017 at 10:55, andrewinboulder said...
BUT, then you ask them how long the copper based cable can be, and the answer is, "um, yeah, it will be limited to 3-5 Meters. What is wrong with these people????

I've been saying that since S-Video came out with six foot cables.

I've never understood how someone can come out with a technology that a person would use in a huge theater where the equipment might be forty feet from the video source, but your system size is limited to a TV with a video source on a shelf underneath it.

This is terribly stupid. Terribly.

By the way, FIX the friggin audio delay problems for goddsake.

I've never been sure if it's audio delay or video delay. Is it just one of those?

On March 12, 2017 at 04:40, crosen said...
As I understand it, the original sin with HDMI was basing it on twisted pair copper. It's just too fragile for such high throughput real time data transfer.

No, that's not it. The copper is wide enough for all the electrons to rush through it, even if they have to go side by side. The wires don't fall apart for lack of strength.
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 30 made on Monday March 13, 2017 at 08:50
highfigh
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On March 12, 2017 at 10:55, andrewinboulder said...
Yep

Just was listening to a Q&A with the creators of the new HDMI 2.1 spec. It's amazing to me that these guys rattle off all the great new features for 2.1, which is now going to supposedly push the data rate to 48GBPS and handle 8K, BUT, then you ask them how long the copper based cable can be, and the answer is, "um, yeah, it will be limited to 3-5 Meters. What is wrong with these people????

By the way, FIX the friggin audio delay problems for goddsake.

What's wrong with them? They live in a lab or office and dream up new shit without having a damn clue about what people are actually doing with it and what is needed.

It's time for someone to roll up a newspaper and swat these propeller heads on the snout. HARD! Once they get their legs under them, they need to go into the field, to find out what kinds of hell they're creating for us.
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
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