HDMI 2.1 Everything you Need to Know for Future Proofing Your System

gene

gene

Audioholics Master Chief
Administrator
This thread is reserved for a technical discussion regarding HDMI 2.1 based on our 3-part Youtube interview series with Sound United and our editorial summarizing the important information to guide you on how to future proof your system for years to come.

Perhaps one of the coolest features for HDMI 2.1 is:
HDMI 2.1 promises an improved audio experience and simplified system connectivity via a feature called eARC. Imagine being able to plug any source into your display and it sending high res audio to your AVR? That's cool.

The Ultra High Speed HDMI Cable is the only way to ensure all the features and capabilities of the HDMI 2.1 Specification are delivered from a source device to a display. Ensuring Ultra High Speed HDMI cables are compliant with the HDMI 2.1 Specification is essential to the HDMI ecosystem. The HDMI Forum’s mandatory ATC-only certification requirements are designed to ensure cables are compliant with the HDMI 2.1 Specification. And the anti-counterfeit Ultra High Speed HDMI Certification Label and its scanning results provide a visible verification of certification that a product meets the HDMI Forum’s requirements.
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Read: HDMI 2.1 Definitive Guide to the Next Generation
 
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Danzilla31

Audioholic Ninja
Dude the only thing I've seen filmed at 120 frames per second rendered at 60 on 4k was that Will Smith movie Gemini man.

Honestly I wasn't feeling it I had to switch it out for the blue ray with the slower frames version

It made every thing so detailed in every background that it was actually distracting to the eye

Not to mention it made you feel like you were on the set and not immersed in the story happening somewhere in life

And The soap bubble effect was almost unbearable

Plus the action kind off felt like you were in a video game

Now in video games I can see the potential I really hope this doesn't take off at least not for awhile

Not just with the way movies look but also I really don't want to switch out my cables and some of my gear Lol

Too lazy
 
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Trebdp83

Audioholic
Unless 2.1 standardizes the HDMI-CEC feature set and name across all device manufacturers, it doesn't by the way, I really don't care about the rest. Sure, I'll end up with new gear in a few years and have to throw some old HDMI cables into a tub with even older component, S-Video, optical, coaxial and analog cables, but I'm not looking forward to it.
 
TLS Guy

TLS Guy

Audioholic Slumlord
That is interesting, but will increase the need for active cables, especially hybrid ones, I think.

So will that exclude those cables being certified again because they draw more from the HDMI port than spec? With the added complication I suspect power draw will be part of the spec. As I see it the best way to handle this would be to make an external power supply part of the spec.
 
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Otto Pylot

Audioholic Intern
Unless 2.1 standardizes the HDMI-CEC feature set and name across all device manufacturers, it doesn't by the way, I really don't care about the rest. Sure, I'll end up with new gear in a few years and have to throw some old HDMI cables into a tub with even older component, S-Video, optical, coaxial and analog cables, but I'm not looking forward to it.
HDMI.org supposedly standardized CEC with CEC Extensions. Whether it made it into the final ratified option sets of HDMI 2.1 I haven't bothered to check as I don't really care about CEC. Ratified or not it will take a long time before issues are resolved across the board. I'll continue to use my Harmony remotes because they do all that I need them to do for single remote control of both of my HTS's.
 
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Otto Pylot

Audioholic Intern
That is interesting, but will increase the need for active cables, especially hybrid ones, I think.

So will that exclude those cables being certified again because they draw more from the HDMI port than spec? With the added complication I suspect power draw will be part of the spec. As I see it the best way to handle this would be to make an external power supply part of the spec.
Reliable power draw from the HDMI port has indeed been an issue for the hybrid cable mfrs. What some in the industry would like to see is the current output of the HDMI ports be increased a bit to give a little "headroom" for fluctuations. 50mA is not a lot of current but with a long distance cable pushing high demand a/v, any minor fluctuations at the input may cause issues. I think that's why Ruipro is supplying voltage inserters with their 8k cables once released. As far as certification goes, there are connectors that are passing CTS but how that translates to the entire cable (connectors and body) for active cables is unclear. And yes, hybrid fiber cables, imo, will the only way to go forward with HDMI 2.1 and beyond (HDMI 2.0 as well for 20' and longer runs).
 
TLS Guy

TLS Guy

Audioholic Slumlord
Reliable power draw from the HDMI port has indeed been an issue for the hybrid cable mfrs. What some in the industry would like to see is the current output of the HDMI ports be increased a bit to give a little "headroom" for fluctuations. 50mA is not a lot of current but with a long distance cable pushing high demand a/v, any minor fluctuations at the input may cause issues. I think that's why Ruipro is supplying voltage inserters with their 8k cables once released. As far as certification goes, there are connectors that are passing CTS but how that translates to the entire cable (connectors and body) for active cables is unclear. And yes, hybrid fiber cables, imo, will the only way to go forward with HDMI 2.1 and beyond (HDMI 2.0 as well for 20' and longer runs).
My Ruipro cable has been flawless with the Legrand Voltage inserter by the way.
 
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Otto Pylot

Audioholic Intern
My Ruipro cable has been flawless with the Legrand Voltage inserter by the way.
That is good to hear. I'm waiting to test their upgraded 4k cables and later on this summer the 8k cables. I already have a handful of their voltage inserters.
 
Gmoney

Gmoney

Audioholic Field Marshall
That is interesting, but will increase the need for active cables, especially hybrid ones, I think.

So will that exclude those cables being certified again because they draw more from the HDMI port than spec? With the added complication I suspect power draw will be part of the spec. As I see it the best way to handle this would be to make an external power supply part of the spec.
Doc, you Probably already know they gonna stick an extra power supply in a AVR and cutback on the amp power supply. Or a rechargeable battery in the HDMI 2.1 cable that will draw power for keeping the battery charged at the input of a AVR HDMI ports
Doc No disrespect, me Personally? I just buy Yamaha AVR’s. Got best Reliability and They own their Factories.
 
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Otto Pylot

Audioholic Intern
Doc, you Probably already know they gonna stick an extra power supply in a AVR and cutback on the amp power supply. Or a rechargeable battery in the HDMI 2.1 cable that will draw power for keeping the battery charged at the input of a AVR HDMI ports
Doc No disrespect, me Personally? I just buy Yamaha AVR’s. Got best Reliability and They own their Factories.
A rechargeable battery in the HDMI cable? That's funny! . I have Yamaha AVR's for both of my systems so we'll see when the time comes what's needed.
 
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dmusoke

Audioholic Intern
Well written article, Gene. And very informative. Thanks!
 
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Otto Pylot

Audioholic Intern
Nice article but the information has been around for quite some time now.
 
BMXTRIX

BMXTRIX

Audioholic Spartan
I hope eARC doesn't introduce the same long line of issues that ARC has created. I never understood why it seemed like such an erratic concept that ARC wasn't just an available source on the AV receiver. Switch to your local source, pick the ARC input on your receiver, listen to audio, have a good day.

Likewise, I'm still dumbfounded that HDMI hasn't REQUIRED that any surround sources also include a full stereo audio source at the same time. This way multi-zone receivers, and whole house audio systems can distribute audio through a home, or to headphones, or whatever else, while the main surround sound mix is still in place, unchanged. They have 32 channels of audio to work with and fail to require that two of them be used for stereo. This would solve SO many problems when people have different setups in their home that are connected to a single receiver, or to home distribution systems.
 
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WookieGR

Audioholic Intern
Now, if only all devices offered HDMI 2.1 support. Console/PC > AVR > TV. ENGAGE!
 
MR.MAGOO

MR.MAGOO

Audioholic General
I've seen HDMI cable specs at 4K/60Hz. What happens if my TV is 4K with a 120Hz refresh rate?
 
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Otto Pylot

Audioholic Intern
I've seen HDMI cable specs at 4K/60Hz. What happens if my TV is 4K with a 120Hz refresh rate?
Probably nothing. The tv will just handle the signal the best it can. The HDMI inputs only have v1.3 chipsets so you're only capable of the HDMI 1.3 option sets. I wouldn't worry about it.
 

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