At fortnite video recording at switch?

I want to ask if someone knows how to make a video recording on the switch when you play fn. How much if you press the button on the blue controller says that it doesn't work so I can tell someone how it can be done differently?

Connect the docking station to a capture card on the PC and record via the PC.

Thanks, you can do that. But can you explain it a bit more precisely?

You take a computer or laptop, connect a capture card to it, connect the docking station of your Nintendo switch to the capture card via HDMI and then run a recording program such as OBS on the PC to record your gameplay.

Thanks