Happy Horse AI is an all-in-one AI video generation platform built for fast browser-based creation. It supports text-to-video, image-to-video, reference-to-video, and video editing workflows in a single interface. Users can control duration, resolution, aspect ratio, motion guidance, and audio handling to match different publishing needs. The platform offers 720p and 1080p output, short-form video lengths, and multiple ratios including 16:9, 9:16, 1:1, 4:3, and 3:4. It is designed for creators who want prompt-driven generation, reference-guided motion, and practical editing tools without switching between separate apps.