HDMI Multiviewer?

Hello all, i am searching for multiviewer with hdmi inputs and output.
What i want is to input 4x Full HD and output Ultra HD (4x Full HD in quadview).
Blackmagic have this: [www].[blackmagicdesign].[com]/products/multiview
But it is SDI only, i want with hdmi.
Does it exist? I cannot find what i want on internet.
Can anyone help me?

In the broadcast world we don't use a lot of HDMI.. SDI is the standard..

But hey Google is your friend: https://www.google.nl/search?q=hdmi+multiviewer&source=lnms&tbm=isch

And if you really need UHD 4k output.. You need to have deeeeeep pockets..

https://www.rgb.com/products/superview-4k-multiviewer
https://bzbexpress.com/KD-MLV4x2/4x2-I-O-Ultra-HD-4K-MultiViewer-Seamless-Matrix-Switcher-by-Key-Digital.html
https://bzbexpress.com/DE-8-ULTRA-4K/8-Input-DVI-VGA-HDMI-SD-SDI-HD-SDI-Universal-Multiviewer-w-4K-Output-by-Apantac.html

I understand broadcast world use SDI as standard.
Purpose of use is gaming, i want use 4x game consoles and show them all on Ultra HD TV screen.

Your links are very interesting. But you are right, i do not have deeeeeep pockets...

I searched further on manufacturer website and found this:
[apantac].[com]/product-info.php?id=429
This support Ultra HD output at 60Hz and 4:4:4 (no color loss!),
other brands does only 30Hz or color compression (loss!).

Problem is the price, my budget is not big.
Blackmagic MultiView 4 cost € 425,-, nice price but SDI only.
I look something same but with HDMI for under € 500,-.

I don't think you will fund something for under 500 euros. What you want exists, but you'll have to spend a few thousand. Also, if the multiviewer is going to introduce at least 1 frame of delay, I think your gamers will be unhappy!

Also, if the multiviewer is going to introduce at least 1 frame of delay, I think your gamers will be unhappy!

Which is the point of the MV4.. There is a real issue with delay.. Which is for a multiviewer for some preview not a problem.. But when it comes to gaming i guess 200ms Lag is too much right

Thanks for yours reactions.
High latency is unacceptable for gaming, i was hoping for 10 ms or lower latency.
I going use multiple TV/monitors with each console.
Maybe in future come multiviewer for gaming use on market.