Honestly, I’ve seen this too many times working in IT. The best option was always to set up a computer with a local administrator account, no access to the secure network, and let the entire department have access to it.

Install the camera software(s) on there and only there. Videos are then exported into a common file type and transferred through USB or DVD.

I’ve worked with Police departments that had dozens of different, unique software each with their own proprietary codec. Every time they requested a recording from a business there would be another unsigned .exe to run. Straight garbage.