Image capture every minute and FTP

I have a Pan Cam and would like to know if it’s possible with either the original firmware or the RTSP version to capture a frame from the camera’s stream once each minute and send the image via FTP. If so, can someone direct me to the steps involved? Thanks in advance for any help provided.

I did something a number of years back with other product using FFMPEG against an RTSP stream and then would upload to a host via FTP. Sorry… don’t have step-by-step.