Can’t tell what you mean from the video. There are a lot of sounds but right around the 25 mark she is counting and doing nothing!?
Anyway I made a video to make it more transparent what I am talking about:
It’s not plugged in to an amp, but it doesn’t need to for the sound I am talking about. So at first I try to just produce the clacking by itself and it only half works.
Then for contrast I do hammer-ons or at least I try to and the clacking is still there with every hammer on but it’s not the note. It’s the metal on metal (?) string on fretbar.
Sorry for hiding my fingers behind the mic. I could re-record it but I think isolating the sound here should be enough!?