I know that you can split the screen on the PC like with multiple monitors. Is that also possible if, for example, I play Ps4 on the one hand and want to do something on the PC on the other. B. Watch Youtube?
That's what your monitor needs to support. That means picture in picture https://www.google.com/...07&bih=913
I always use my capture card for this. But with the solution you will get delay
I do not understand what you mean. That doesn't answer my question.
Then I don't understand the question. Is the goal to do 2 things on one screen? So PS4 and YT?
Only now can I see your answer because you did not answer me but yourself, which is why I did not receive a notification.
So I know that the Samsung Odyssey G9 allows you to split the screen with a PC, for example to play on one side and watch YouTube on the other. My question was now whether I can connect a PC and a Ps4 and set it up so that I can play Ps4 on one side and watch YouTube on the other on the PC.
With the picture in picture function you can display the picture from several sources (e.g. From two different HDMI inputs next to each other), but your monitor must support this function. Alternatively, you could do it with a capture card like QuestionMeister007 writes, which is a plug-in card or a USB stick with which you can record the video signal of another device, for example the PS4 via HDMI and record it as a video with a slight delay (due to the data processing) play on your PC. Alternatively, you could use the PS4's streaming function to stream your game to the PC and then run videos in a separate window next to it.
So display this two different HDMI inputs side by side, is that only possible with PCs or also with my Ps4?
For this to be possible, your monitor must support Picture-in-Picture or Picture-by-Picture. The Samsung Odyssey G9 supports that, so yes it is possible.
Do I have to adjust that somehow or the screen splits automatically when both PC and Ps4 are on.
I do not know that. The best thing to do is to look up the monitor's user manual.
Basically it works with any input signal (PC, Playstation, Switch, Wii U, Xbox, …) as long as your monitor supports it.