Jesus Christ!! Another Spaceship from another world with blinking positionlights. Why don't you guys find something else to bother other people with that the usual "ufo" footage. It's not interesting watching aeroplanes on the nightskies.
Probably not a conventional plane as the flashes are too erratic, they would be flashing at a steady pace, and I didn't see any red or green light either. Either a toy, or something quite unconventional. I heard no engine sounds, so we could probable rule out a helicopter, or other conventional aircraft.