So, the police say they're going to arrest you if you don't answer their questions. It's a trick. If they had enough to arrest you, they would already have arrested you. The reason they're asking you questions is because they want you to make the case for them. They want you to admit something that they can't prove otherwise. If you've got a body cam of this footage, a good attorney can use that to suppress any evidence that it elicits. If you just remember the Fifth Amendment right to remain silent, then you won't admit to anything and there won't be anything to suppress.