Which part? Which road? Your video is long and you're on different roads with many different designs.

The one at the very beginning, though is a tough one. Single lane each way with a raised median is particularly difficult because there's really no good way for a motorist to pass. I personally would avoid such a road as best I could.

If there's a bike lane I'll use it if I determine that it's safe enough to use, otherwise I use the full lane. If there's no bike lane and the lane is too narrow to share (the majority of vehicular travel lanes), then I use the full lane. If there are no lanes, or the outside lane is very wide, then I'll ride farther right but still 4-5 feet from the edge. If there are parked cars then I use the full width of the "effective" lane which is the width from the lane line or center line over to an imaginary line created by potential opening car doors.