Happy Horse is an open-source AI video creation platform centered on Happy Horse 1.0. It supports text-to-video and image-to-video generation, letting users upload prompts or reference images to produce cinematic clips. The system emphasizes joint audio-video output, multilingual lip-sync, motion quality, and rapid iteration. Users can choose fast or quality modes, adjust resolution and aspect ratio, and generate output suitable for storyboards, concept testing, product marketing, and internal creative reviews. It is built to help teams evaluate ideas quickly and produce shareable video drafts with minimal friction.