Please read our setup guide for generic IP cameras:
It is mentioned at the end of Section 5.1:
Some IP cameras cannot accept the folder name parameter. In this case, you can include the folder name in username as follows:
Password is still the regular password.
Please replace USERNAME and foldername with the real username and foldername. For example, if your CameraFTP username is “Mike”, and your camera name is “backyard”, then you need to enter “Mike:Dbackyard” as the username.