Wonder if it is capable of flight out of ground effect. The video shows a flight height above ground roughly below the rotor diameter which could mean it is still in ground effect.
Ground effect happens up to about half the wingspan, or about the length of one blade in the case of a rotorcraft. If you look at the 8:50 mark it seems to me that it's well above that (albeit not for very long). So yes, I think it's capable of free flight.