HappyHorse AI is an online AI video and image generation platform designed to turn prompts, images, or reference videos into polished visual content. It focuses on cinematic motion, scene coherence, and accurate prompt following, with support for text-to-video, image-to-video, and video-to-video creation. The platform offers browser-based access, free image generation, free video credits on sign-up, and high-resolution outputs. Users can adjust duration, aspect ratio, style, and audio options to create short-form clips, product demos, portraits, and storytelling scenes. Its workflow is simple: describe the idea, tune the settings, and generate downloadable assets quickly from the web.