Offline Mac AI Video Creator

I need a native macOS application that runs entirely on my 2025 15-inch MacBook Air (M4, 16 GB unified memory) with zero cloud calls or subscriptions. Everything—Text-to-Image, Image-to-Video, and Video-to-Video... (Budget: $250 - $750 USD, Jobs: After Effects, AI Video, Animation, App Development, Metal, Video Editing, Video Production, Video Services)