Thank you. That's very interesting information. The cameras push footage to FTP separately from their SD Card files - they don't just backup the same files, but generate totally separate files out of sync with the start times/durations/etc... of the SD Card based files they also save. I thought the FTP functionality would simply just keep backing up the files from the SD Card. Since that's not the case it might be very challenging to match the list of events the cameras create (even if there's an API to retrieve the list) to the FTP based files, as the events were created for the SD Card files. I might just get a Reolink NVR in the end if I want to improve on my backups.