Do yourself a favor and submit a FOIA request for some body camera of something you're trying to understand. If the footage is too long, they'll deny your request for being unduly burdensome because of the need to review/redact those records, even in public.

It took 8mo for Chicago Police to review and redact bodycamera footage from a protest in Chicago. It was 95% blurred. Almost hilariously, one of the only parts that wasn't blurred was a moment where one cop commented on another cop's mustache.

So from the FOIA perspective, the public isn't able to get gobs and gobs of footage just because it's public.