One thing we all need to train ourselves on is that LEOs are citizens. They have the same rights that you and I have. We may walk up to a citizen and ask him for his name. He, of course, can call us &*^%$s and walk away. So can a LEO just walk up to a citizen and ask him for his name.
The problem comes in when a LEO (or anyone, for that matter) takes an action that would normally be allowable for anyone but does it under the color of law. Some here would assume that the mere presence of a uniform or a badge would make any action under the color of law. The courts don't agree.
I read a recent case about a man accused of selling arms to illegals. As part of the investigation, he was stopped by (IIRC) four or five officers outside a gun show. His lawyer contended that, although the police insisted otherwise, that his client had been detained. The court said that a policeman talking to a citizen does not necessarily constitute a detention. However, they ruled that, in this case, the number of officers, combined with the fact that they essentially had him surrounded, created the impression in his mind that he was not free to go. That made it a detention. That made everything they did "under the color of law."
In the OP, the officer does not initially lead the cameraman to believe that he is not free to go, therefore the officer is free to ask the man's name without it being understood to be a demand under color of law. At some point in the encounter, the man asks if he is free to go. The officer says no. That made it a detention and made the continued requests for the man's name demands under color of law. Ironically, the officer said it was not a detention, even though he explicitly made it one.
Assuming the officer had no RAS, he crossed the line when he told the citizen that he was not free to go.
I guess the point I am making is that when a person dons the uniform of a LEO, he doesn't give up all the rights he could exercise as a citizen. His actions are lawfully limited when he takes those actions under color of law. The mere presence of a badge and a uniform does not automatically make his actions under color of law.