Alright after getting rid of the Argon One case I’ve plugged in the original Raspberry PSU since it pushes out 3 amps instead of the apparently maximum 2.4 amps the Anker can do.
Result:
With the original PSU I could navigate through the main menu of the DVD. As soon as the content of the DVD started, black screen appeared and a pop up message “drive successfully ejected” came up.
Then I’ve tried to plug in the Anker PSU since I’ve had more luck with it in the past even though it can only do 2.4 amps max.
Result with Anker PSU:
The DVD plays fine. For about three minutes. Then same result, a pop up that tells me that the drive was successfully removed.
The Raspberry now does not have any cooling on it whatsoever. But since it’s not overclocked I don’t expect it to overheat within seconds or two or three minutes while only playing a DVD on LibreELEC.
Moderator's PS:
Alright I’ve solved the riddle of the DVD crashing. It’s really just the DVD drive not getting enough juice. I’ve solved this using a Y-cable where you plug in one end into a PSU and the other end into the Pi and the actual USB device (DVD drive) that’s supposed to be powered in the middle. Never was an issue on the Pi 3 but oh well.
Now regarding DVDs the only thing left for me to figure out is how to hook everything up so it’s not just a huge mess of cables and adapters all plugging into each other.
The only issue I’m still left with is why the stream keeps constantly crashing. It’s really weird because it is literally just the Pi 4 on its own using a wired LAN connection with nothing else drawing power except for the Logitech keyboard wireless dongle. I’ll mess around with it some more and if nothing works, I’ll open up a new thread. Thanks a lot for your suggestions guys, that helped me out a lot!