Defamation is the most boring version of this case. Barring dishonest editing, of course it's fine.

There are hypothetical versions of this that get more interesting. Ohio is a one-party consent state. It's not clear what happens in a two-party consent state. Law enforcement has no expectation of privacy in public spaces. Private is "it depends," think cases where low enforcement is discussing something with one party in a domestic dispute. If he had used bodycam footage, then you get into interesting copyright laws. Is it public domain, and if not, is it sufficiently transformative to qualify as fair use (think April 29, 1992 by Sublime).