The migration from Kai Tak to Chek Lap Kok is also a story of its own. All the staff and equipment were moved in a few hours from one to another while some of the planes scheduled to land on the new one were already mid-air.

Pilots are awesome. Aviation engineers are awesome. When I observe aviation, I'm always impressed. It really seems like one of the pinnacles of human achievement. Everything from the planes to the pilots to the ATCs and beyond... everyone is just at the top of their game.

I'm afraid that's an optical illusion, the main landing gear is indeed fixed along the yaw axis. However some aircraft have main landing gear units that can pivot somewhat along the pitch axis.

Not really. Approach != landing. Those are visual conditions, most airplanes we landing on CAT I (or visual) precision system. By the time the airplanes were so low no auto pilot was on, actually.

Looks normal (I used to fly for a living)

It is a landing flight path and is about 1 mile away from the airport. Departures are westward over Ocean Beach unless there is heavy fog and they reverse, pretty rare. The video is taken from the middle of Balboa Park under the Laurel street bridge over the 163 freeway. I can sit out on my deck and watch these plane's final descent and their horizontal position and altitude varies quite a bit and I'm about a half mile from where the video was shot.