Reolink have cameras which keep the video local, but support RTSP and can upload video to an FTP server (old school, I know) of your choice. I run my own FTP se

Reolink have cameras which keep the video local, but support RTSP and can upload video to an FTP server (old school, I know) of your choice. I run my own FTP server and keep the video streams in DigitalOcean spaces with a 24 hours object expiration policy, fairly cheap NVR.