How visually impaired navigate the places.
if the person is going somewhere where they have been before they will keep a very detailed memory, involving counting driveways, streets, corners and even paving tiles, hearing and counting buildings (yes, you can hear buildings), feeling common air currents, remembering landmarks such as the smell of a particular tree, the small bump at the corner of that sidewalk and the sound of traffic on that large street. The will use these clues and again be able to move reasonably well in areas where they have been before.
The video focuses on the footsteps with the beeping sound, it might show how the visually impaired count the steps and use their familiar memory to navigate direction.
Are you able follow the footsteps and the guidance of the sound in the video and revisit the same place?