Strange unknown flying orb-like object caught on camera in New Jersey

The witness states: A sunny day in Middlesex County, New Jersey. August 2018, it looked like a cocoon that drifting in the air. It is a material, not light. It is white under the sun. 


Seems like smooth surface, drift around me then away, I thought that I have lost it at that moment, yet then it return close to me, stop, then speed away (At the end of the footage).

Note: I have no idea what it could be, an insect, some sort of fluff or cotton coming from flowers or trees or the witness has caught a spiritual orb or another kind of ‘intelligent’ life form?