Videos can't be fast forwarded?

Do you know that some videos can't be fast forwarded regardless of which media player you use?

One has e.g. A few ripped films from Netflix, or TV recordings on the PC. In the film you want to be in the middle, but that doesn't work. They are normal MP4 files.

Has anyone already had the problem?

On which operating system do you play the films and with which player?

That does not matter. Windows 10, Linux, Android, no matter which player… The problem still exists.