Accidentally filmed film?

I film myself playing or I film Totalwar, CSGO etc. Completely to cut out good parts later and put them together later. That's why the screen recording actually runs 24/7 when I play. I have set it so that it films everything from the screen, because I change the games often and do not want to change anything. Since the recordings like to run 2-5 hours and show several games in a row.

Now I got Netflix and Anime on Demand and watched them on the side. Only later did I realize that I filmed not only my game but also two episodes of two series next to it in the window - I had forgotten to make the recording because the program was minimized.

I think it's illegal to film movies. Of course I snipped the recording as always and deleted the series. Still I wonder:

It's probably illegal. (?) Does Netflix and Anime on Demand notice that the series were "filmed"? Do they have any program that immediately sounds the alarm and sends out the attorney's letter?

? How should they see what you do on your PC?

Especially since, depending on the program of the series, nothing should be seen anyway

Nothing will happen and I think you can even film something for your own benefit

No, they can't find out. I think recording series and films is illegal, but nobody will find out until you publish it.

Filmed? With a camcorder from a display or REC from a PC screen using editing software (e.g. Magix) or direct streaming using a video download helper example?

NO not visible… Only understandable if you republish it e.g. On Youtube. (Answer refers to all examples of my request).

As I said, a program that bluntly films the screen

Do not worry. Even if that actually violates the conditions of use. As long as you don't pass them on, be it free or even for a fee, THEN you have a problem. Otherwise just delete the one in question and forget it.