How to transfer images from a dahua ANPR ip camera to node-red with FTP?

I'm new to node-red and was trying to figure out myself how to solve this, but there isn't much documentation on it.

I have a Dahua ANPR ip camera, it has the option to transfer images of the car's plates with FTP, I installed "node-red-contrib-ftp-server" and created the ftp server on node-red, but after this I don't know what to do to know where the images are and how to manipulate them (after that I want to display the image in node and send the images to a firebase database).
hope you can help me :c
greetings from Chile!