Ambilight Hardware Help!

Hey guys!

Please help me out of feeling a little overwhelmed... the more I read, the less I understand.

So, I want to add ambilight to my LG OLED 65".

HDMI setup is:

Playstation -----|
Dreambox -----|
nVidia Shield --| (Netflix, Jellyfin, both have DV and HDR content...)

more ................|
| --- Onkyo AV Receiver ---> HDMI --> LG

After watching this, well known, tutorial I thought that adding this is really easy to do.
I thought I only need the following hardware:

https://www.amazon.de/gp/product/B097DKNS1M?tag=hyperioforum-21&smid=A2BT0UZ7STTPIR&psc=1 (cheap Amazon HDCP 2.2 with loop out ...)

Raspi Zero (2) W or even Raspi 3 B
https://www.amazon.de/gp/product/B01CDTEJBG?tag=hyperioforum-21  
+ PSU (5v 10A)
+ Barrel Jack Connector

LED strip and Raspi (micro USB) +/- comes into the barrel jack connector, which is connected to the PSU
Data signal cable of the LED strip to the respective contact on the Raspi - and that is it more or less, right?

Then, I have seen several things like Splitters and all sorts of stuff.
Splitters might be needed for those who don't use AV Receivers, right?
Also I've seen that guys add a fuse between LED Strip and PSU, which I think I don't need.

What is the most straigthforward implementation for Hyperion/HyperHDR for my setup?
Also, with the HW setup described, does Netflix work, via the app on my nVidia shield? (Grabber has HDCP 2.2)

Thanks for any input I may get!

Thanks @pclin, this is great information!

I further looked at it and you are absolutely right. It would be best to root the TV. You could install all the stuff in dev mode alone, but since the dev mode is temporarly, you'd want to really root the TV.

OK, updated way to go:

Higher level:
[LG TV --> PiCap --> Hyperion) --> over WIFI to --> ESP32 --> WLED --> WS2812 ECO 5M 300 LEDs

1. Software

Please correct me if i am wrong, but as is see it, this should be the way to go.
You have it rooted, right? I have a 2018 OLED65C8LLA with WebOS 05.50.10.
Which WebOS Version do you have and is homebrewchannel starting the SSH server on reboot?

I think I will have to just do it at some point and tackle questions when they come up^^

Nevertheless, the plan is to run PiCap & Hyperion directly on the TV, which eliminates the need of a RaspberryPi.

2. Hardware and wiring - Still, the bigger pain point.

Please review those parts:

LED Netzteil MeanWell LPV 60 5 Schaltnetzteil
AZDelivery NodeMCU Development Nachfolgermodell ESP8266
BTF LIGHTING Individuell adressierbar Vollfarbiger DIY Projekte

Q:
1. Do you have an opinion against the "ECO" versions of WS2812B?
- As described here it should be irrelevant if you use the non ECO or ECO version, right?

2. The biggest question mark still is the level shifter topic. Please take a look at the attached image, which is from here.

Isn't he using the ESP8266 (Wemos D1 mini) without a level shifter on WS2812B LEDs?

When you go to https://www.wemos.cc/en/latest/, it says, that all the digital outputs operate at 3,3V.
So, that confuses me a lot.

Also he uses a 470 ohms resistor instead of the 62 in your wiring diagram.

Thanks for your help in clearing up those pain points so I can start