the cloud for video surveillance

We want to provide services of video surveillance for customers without the payment of the equipment. We installed an ip camera that is connected to the Internet, the subscriber using the login and the password comes in your personal account, can watch real time image from the camera and write, for example, over the last week (archive volume depends on the rate).

You need to implement the cloud. Our camera work through http, rtsp, ftp protocols.
There are similar services: seetong.com (example of camera: 1173865, login:admin, password: 123456)
These services even have ip cameras tplink
Dlink and others
Camera – Linux

Your suggestions and the price tag throws here or email