Why can't I record Fortnite with OCam?

Me
2

I would like to record Fortnite on my PC and have already tried everything, Loilo Game Recorder, OBS (Studio), Action, etc. However my laptop is somehow not "compatible" with OBS or Loilo. The video jerks all the time and you can't watch it. So, I wanted to try OCam, but OCam does not even recognize Fortnite as a game application. Why?

Re

So how I would do it would be to use an operating system-independent client-integrated recording software and to program it myself.

Co

Use Bandicam. If it does not recognize the game, you can also record the screen. It can also record in HD and is storage-friendly.