After watching the video I’m not certain what it could be, but I’ve heard similar before from my printer so I’ll list them in order of sound similarity:
My X belt wasn’t fully aligned in its track and it was rubbing on the side, which caused a similar clicked noise when any X move occurred.
When there too much pressure in the hot end (from a clog, low temp, or too close to the bed, etc), I’ve seen the filament “kicking back” out of the extruder. Watch for a sudden backwards jerk of the filament.
My X stepper motor made some terrible noises after tightening the associated belt. I’m not sure what’s causing it exactly, but I’m replacing the stepper soon.
After watching the video I’m not certain what it could be, but I’ve heard similar before from my printer so I’ll list them in order of sound similarity: