Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

No announcement of HDMI 2.1a and QMS for new ATV

jmpage2

jmpage2

macrumors 68040
Original poster
Sep 14, 2007
3,238
630
Apple continues missing the mark with ATV hardware releases.

Quick Media Switching is sorely needed for those of us with high end OLED displays and AVRs. Video is dropped for several seconds every time video rate changes.

Still no 120hz 4K support.
 
I dont think its a true HDMI 2.1 port, there isn’t mention of VRR either. I believe its a HDMI 2.0b with some of the HDMI 2.1 spec implemented.
 
  • Like
Reactions: diamond.g
jmpage2 said:
LG OLEDs have supported it for at least 2-3 years. My C9 has QMS and most of the other HDMI 2.1a features and it’s a 3+ year old TV.
Click to expand...
Are you sure? Public info says no TV supports QMS.

That said, QMS is dead on arrival. VRR does the same thing in terms of switching frame-rates quickly, but better. Most new TVs support VRR.
 
Last edited:
What sources even support QMS or VRR? I have an HDMI 2.1 processor with QMS and LG C1 OLED, but the delay and blanking when resolutions/frame rate changes is rather annoying.
 
BeatCrazy said:
What sources even support QMS or VRR? I have an HDMI 2.1 processor with QMS and LG C1 OLED, but the delay and blanking when resolutions/frame rate changes is rather annoying.
Click to expand...
Exactly, I'm not aware of any QMS sources. I think a lot of TVs are QMS-enabled, but without any sources there is no way to confirm!

Lots of VRR sources though (GPUs, PS5, XBox Series)
 
JSteele said:
I dont think its a true HDMI 2.1 port, there isn’t mention of VRR either. I believe its a HDMI 2.0b with some of the HDMI 2.1 spec implemented.
Click to expand...
Definiately. The HDMI marketing requirement is that OEMs are allowed to market as HDMI 2.1 so long as they specify what features it supports. Apple clearly states that the HDMI 2.1 feature supported is eARC, which can be implemented with 18Gbps/HDMI 2.0 ports. A shame that Apple hasn't sorted this out. If they are going for a gaming push (otherwise, why the A15?), then VRR would have been a must-have.
 
kiranmk2 said:
Exactly, I'm not aware of any QMS sources. I think a lot of TVs are QMS-enabled, but without any sources there is no way to confirm!

Lots of VRR sources though (GPUs, PS5, XBox Series)
Click to expand...
Yes, I used VRR on my PS5 and PC. I guess I was thrown off on the comment above that VRR is a replacement technology for QMS.
 
oneMadRssn said:
Are you sure? Public info says no TV supports QMS.

That said, QMS is dead on arrival. VRR does the same thing in terms of switching frame-rates quickly, but better. Most new TVs support VRR.
Click to expand...
I thought VRR is in fact what made QMS a possibility. It's simply using VRR to change the framerate without initiating a signal change.
 
When my ATV is connected directly to my TV I get about a 2-3 second video interruption when switching content/programs/apps. It’s slightly annoying.

When my ATV is going through my Onkyo RZ50 HDMI 2.1 AVR, which I prefer for a variety of reasons, the drop in signal can last up to about 5-7 seconds which is really obnoxious. Frequently the program audio will begin to play before video has even been established.

To get the best video performance possible I set the ATV to match content frame-rate.

It would be nice if Apple would sort this out. The rest of my hardware is capable and ready.
 
oneMadRssn said:
Are you sure? Public info says no TV supports QMS.

That said, QMS is dead on arrival. VRR does the same thing in terms of switching frame-rates quickly, but better. Most new TVs support VRR.
Click to expand...
QMS is for video. HDMI VRR is for gaming. QMS requires VRR support in the display. VRR support does not mean QMS is also supported.
 
faffing said:
Coming soon:
"QMS will get rid of that blackout — once it arrives via a software update later this year"

techcrunch.com

The 2022 Apple TV 4K offers solid updates to the best streamer | TechCrunch

Apple's 2022 update to the Apple TV 4K is kind of overkill, but in a way that means buyers will enjoy many years of future-proofing.
techcrunch.com techcrunch.com
Click to expand...
It was thought that the LG CX would support QMS (this was before HDMI Forum changed things), but was never turned on because there were no sources that supported the feature. It will be interesting to see who adds it first.
 
Ive seen speculation that all LG OLEDs since C9 era have it - but again, no device to test with

Will be exciting to see whenever that beta rolls out
 
  • Like
Reactions: diamond.g
faffing said:
Coming soon:
"QMS will get rid of that blackout — once it arrives via a software update later this year"

techcrunch.com

The 2022 Apple TV 4K offers solid updates to the best streamer | TechCrunch

Apple's 2022 update to the Apple TV 4K is kind of overkill, but in a way that means buyers will enjoy many years of future-proofing.
techcrunch.com techcrunch.com
Click to expand...
FYI, no current TV has this feature enabled. Apparently, starting next year, a lot of higher end tvs will have this. It remains to be seen if any tv manufacturers will enable the feature on current devices.
 
bozzykid said:
FYI, no current TV has this feature enabled. Apparently, starting next year, a lot of higher end tvs will have this. It remains to be seen if any tv manufacturers will enable the feature on current devices.
Click to expand...
Do you have a source for this?

From what I've read, QMS adoption will not happen. It's basically dead. Instead, the TV manufacturers have adopted VRR (which is very similar) because it is helpful for both frame-rate switching and gaming, and generally more versatile.
 
Interesting to see that the LG 2023 range of OLED TV’s support QMS as a major feature.

Unless you’re buying a G3 not much else has changed from the 2022 model year.

It will be interesting to see if they enable QMS on the CX and C1. As it’s a main feature of the 2023 range.

To LG’s credit that did add Freesync and Dolby Vision 120hz support after the fact to the CX via software update.

More on the 2023 range here: https://www.flatpanelshd.com/news.php?subaction=showfull&id=1672651962
 
Out of curiosity, what does the Apple TV need HDMI 2.1a or features like 120Hz 4K output for?

Obviously, some of HDMI 2.1 is going to be valuable, like the expanded audio support, but what's gonna be the benefit of the Apple TV to output at 120Hz?
 
MegaBlue said:
Out of curiosity, what does the Apple TV need HDMI 2.1a or features like 120Hz 4K output for?

Obviously, some of HDMI 2.1 is going to be valuable, like the expanded audio support, but what's gonna be the benefit of the Apple TV to output at 120Hz?
Click to expand...
HDMI 2.1a doesn't really mean anything. QMS is an HDMI 2.1a feature and HDMI 2.1 features can work with what was known as an HDMI 2.0 port. For 4k120 Hz, the main thing that is needed is the 40-48 Gbps bandwidth which the Apple TV doesn't have. The main beneficiaries of 120 Hz support would be sports streaming and gaming.
 
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom
Back