AI Story Video Maker Platform

I need an end-to-end solution that lets users type a topic and receive a polished video story in minutes. The core flow is: topic → AI-written story (user can choose short, medium, long) → scene breakdown... (Budget: ₹12500 - ₹37500 INR, Jobs: AI Content Creation, AI Model Development, AI Text-to-speech, AI Video Editing, Android, Mobile App Development, PHP, Unity 3D)