Lighten up, folks!
The cop was arresting him for failure to obey or respond to his communication to stop. He was not arrested or charged with resisting arrest. He was simply warned not to resist. Notice the cop is not angry, belligerent or hotheaded.
The kid was handcuffed, not because it is legally required, but because when a police officer arrests someone it is a routine procedure for the cop's protection and to a certain extent at times the arrestees. However, it is a discretionary decision. Refusing to stop for police or evading a police officer is the
criminal act of not stopping when told to by a police officer. It does not matter whether the police officer verbally instructs a person to stop or flashes their lights.
A person can be charged with misdemeanor eluding police that is punishable by six months in county jail and/or $1,000 fine, or they could be charged with a felony. The type of evading police felony that a person is charged with depends on the facts of the case.
In the end, nothing serious is going to happen to the kid. He is likely just going to be ticketed for failure to stop at the stop sign.