The way I see it, this footage is there to safeguard both the public and police from lies about each other. It's not there for general perusal, and making it public will expose a lot of private situations that shouldn't be, especially for the civilians in the videos.

So long as the video is available for related court cases, now and in the future, that's fine. There does need to be a way to safe-guard it from destruction when someone wants to hide something, but I think that's a different matter than making the videos non-public.