video creator tool

I want to create dynamic videos software like renderforest.com. Where you can use video templates to create yet dynamic, logo animation in minimal shapes. Video Template should supports wide range of colour themes and customers can simply drop logo into the editor, change the text, choose own colour theme and generate video something like below [login to view URL] I have tried it with FFMPEG, Imagemagick but could not achieve wide variety of animations renderforest has. I think, I am missing something. Anyone having any experience about the same your inputs are appreciated. Looking forward for your support :