RPi 5

If the 4K/UHD rips you make are HEVC then the RPi4 should handle them fine, and is free since you already have it. RPi5 is faster in GUI nav and a few other things but that's spending $$. I haven't used Intel hardware in years so can't make a recommendation on that side (RPi5 is the daily-driver).

If you share something, yes.

Quote from Nekromantik

easiest way to test is put this file on pi and view on TV

https://i807.photobucket.com/albums/yy352/f…e-rgb-1080p.png

if the red and magenta columns are not clear then it does not support it

Could you define 'not clear'?

I'm honestly not sure how I "play" a png file in Kodi?

EDIT: After enabling photos and using "files" to navigating to the dir with the png file the red and magenta bars are showing fine but the text labels for them are not as sharp as the other colours.

I guess that will depend on the connected devices, because on my PI5 it seems to be fine.
LE11.0.5 on PI5->Denon X3800H->LG OLED83C37LA.

i downloaded the following files via ssh & wget
https://i807.photobucket.com/albums/yy352/f…e-rgb-1080p.png
https://web.archive.org/web/2020021718…e-rgb-1080p.png
http://www.ozone3d.net/public/jegx/20…-test-4k-tv.png
and all are looking fine while displaying them via PI5.

Here RPi4, RPi5 and Intel N100 with the bars running 11.0.5-#240124 with kernel 6.1.74
connected -> Denon X6700H -> LG OLED55E6D screen resolution 2160p @ 60 Hz

I can not tell a difference between the 3 devices, but i am not totally clear what i should see or to be more precise what is good and what is bad. I can clearly see the difference between red and magenta.

Quote from Nekromantik

fuzzy

Do you mean that it's clear that there's horizontal chroma subsampling (i.e. the text is aliasy/jaggy/soft)?

If so - wouldn't a chroma grating, multiburst or zone plate be a better test for 4:2:2 vs 4:4:4/RGB chroma?

As others have suggested - what your devices EDID states support for and how your Pi's output is configured can play a part too.

For 2160p50/60 output modes HDMI 2.0 supports 4:4:4/RGB output at 8-bit only (which isn't suitable for HDR 10-bit video - or SDR 10-bit for that matter), and I think - by default - the Pi will thus prefer HDR-friendly 4:2:2 12-bit output modes at 2160p50/60 if an option.

For 2160p24/25/30 (2160p25/30 aren't universally supported by displays) and lower resolutions you can run 4:4:4/RGB at higher bit depths - so your output refresh rate and resolution can play a part in deciding whether 4:4:4/RGB or 4:2:2 output is used ?

Quote from Nekromantik

interesting

I just got pi 5 as decided to want smoother UI experience

I cant power off the Pi 5 using remote though. Using media player keys and flirc.

What happens if you navigate to the power menu and select Power Off, or map S to a key (that's the shortcut to bring up the Power Off menu)?

I've had no problems switching my Pi 5 off via those routes, and then pressing the Pi5's power button (!) switches it back on again!.

There's a config.txt entry you can enter that massively reduces current draw in shutdown (it's not - or wasn't - on by default as it can cause problems with some HATs because of which power is removed and which remains in that mode.)