Couple of different scenarios if you want more detail to address:
I get pulled over by a FCP officer for a traffic stop. Can I video record the exchange between the officer and myself? Do I need to let him know I am recording the exchange?
I witness a police stop and want to video the event can I video?
Taking photographs and video in a public space is a constitutional right. LEO's cannot confiscate cameras, cellphones, etc. without a search warrant. And they are not allowed, under any circumstances to delete anything from someone else property, even if legally confiscated. Hope this helps.