Put a timing chain and oil pump on a Sentra years ago. Could not get the Crank bolt to budge. My buddy who worked at an ASE shop, told me the secret of wedging a 4' breaker bar against the floor, next step you disconnect power to the distributor, and then crank the starter. The front of the car raised up about 4 or 5 inches, then the bolt finally broke.
The bolt in the video is definitely in the top 5 lol.