Application to create video ads with images

We operate in the real estate sector, we provide promotional services to real estate agencies. We would like to integrate into our site an application that allows the creation of video ads made with photographs, zoom effect to give dynamism and possibility to select transition effects between the various images, after registration is purchase of a subscription package (3, 6 , 12 months). The application should allow: 1) select from your computer a maximum of 20 photographs per movie maximum duration 40 seconds. 2) for each subscription package the following quantities are required: 3 months = from 0 to 10 videos, 6 months = 0 to 20 videos, 12 months = unlimited videos. 3) the ability to upload the company logo of the real estate agency in png, jpg, gif etc..visible throughout its duration. 4) preview, save and download on your computer in mp4 format for sharing on social networks. 5) compatible with the different operating systems 6) responsive layout