That is the strangest sounding whistle I've heard. It sounds like a recording of a duck being dropped on to a set of bagpipes, being played back very slowly.
The ESB and Chrysler are in Midtown. They're not visible in this video.We see the Olympic, the Empire State Building, the Chrysler Building
It's actually closer to a mile wide, about 5,000 feet or so.The Hudson River at that location is only half (½) a mile wide.
That's about right, although depending on the angle the camera was pointed, it could be a bit north of there, in the Paulus Hook/Exchange Place area shown on the map. The Woolworth Building is a directly across from Exchange Place and a bit north of the World Trade Center, which isn't in the photos you posted. The CRR terminal is south of there.. I believe the cameraman was somewhere near the old Central Railroad Terminal in New Jersey.