"... makes police dashboard camera and body camera footage exempt from the public record."

I may be wrong but wouldn't this make the footage exempt from FOIA? (Unless the people involved filed the FOIA request ...)

FOIA applies only to federal records; similar state public-records laws have their own restrictions, based on what the state considers publicly-accessible records, and what it considers either protected personal information or sensitive government information; it seems likely that the sharply limited request process identified in the article for access to the police camera footage means that these are not accessible to the general public under the state's general public records law (otherwise, the limited request process would be superfluous.)