Slideshow Videos creating script Like PlayBuzz for Linux

Please Add "VideoCommandLine" in your bid to be considered. Only freelancers with prior experience with ffmpeg, video creation, linux need to apply. PlayBuzz [dot] com allows to create free video slideshows from text and images. You can check a sample video at the bottom here - www [dot] playbuzz [dot] com/item/08b5b30a-1489-486f-bb32-ce5364191109 Looking for a freelancer who can develop a video creation script that can create similar videos with images and text as input using FFMPEG or other tools. The script should be able to run via commandline or php/python to dynamically create videos with supplied images and text. Freelancer need to show a sample working script to be able to considered. I already have FFMPEG based script that creates videos but it doesn't create nice text animations like in Aftereffects.