The Daily Mail caption for this video is “Passenger films terrifying moment airliner dumps 20 tonnes of fuel over Saudi desert.”
Yes, it’s certainly terrifying. No airliner in the entire history of aviation has ever had to dump fuel before! It’s kind of a miracle that the aircraft designers anticipated this once-in-a-lifetime need, and built fuel dumping equipment into the airframe. What visionaries! What unbridled heroism!