mass video

I'm looking for a program, site or person that can create videos in bulk based on a keyword. I'm primarily looking for uniqueness and cost. I would like the videos to be differing lengths (not all under 1 minute), different backgrounds, music, etc. Anyone have a suggestion?

I need software to make 100 videos from 1 video. Software should change video so can be all 100 videos uploaded to same channel. Manually changing video for 5 to 10 new videos is ok, but I need 100 videos. If someone known for such software please let me know.