Ok, that was probably a misunderstanding on my part.
If I select the directory with the movie files via “ Media => Open medium ”, the movie starts, but without menus. So I only see the start screen and cannot start the movie.
In my Panasonic Bluray player it still has a start menu with various options (start movie, subtitles etc.). How do I get this on the VLC - is it Makemkv or the VLC?