alibaba / happyhorse 1.1 reference

## Overview HappyHorse 1.1 Reference is Alibaba’s reference-guided video generator. You provide 1–9 reference images plus a written scene description. The model combines those references into a single short clip with stronger subject consistency. It helps you keep a character, outfit, or product stable across a generated shot. ## What you can build - Character-consistent short scenes for ads, reels, and branded content - Product demo clips that keep packaging shape, labels, and color consistent - Multi-item fashion shots where outfit, accessories, and props stay recognizable - Visual story beats that reuse the same cast across multiple clips - Style-and-subject locked concept pitches for storyboards and pre-vis ## Inputs - 1–9 reference images you want the model to preserve (JPEG/JPG/PNG/WEBP). - Each reference image must be at least 300 px wide and 300 px tall. - Each image must stay within an aspect ratio range of 1:2.5 to 2.5:1. - Each image can be up to 20 MB. - A written scene description that explains the action, camera, lighting, and style. - In the description, point to your references by index, like [Image 1], [Image 2], and so on. - The scene description supports up to 5,000 non‑Chinese characters or 2,500 Chinese characters. - A target clip length between 3 and 15 seconds. - A required output resolution tier: 720p or 1080p. - An optional output aspect ratio. - If you pick auto aspect ratio, the system chooses the closest match from your first reference image. - An optional toggle to add a small “HappyHorse” watermark in the bottom-right corner. - An optional numeric random seed for more repeatable variations. ## Outputs - One generated video clip. - The clip follows your chosen duration and resolution tier. - The frame shape follows your chosen aspect ratio setting. - If enabled, the output includes a visible “HappyHorse” watermark in the bottom-right corner. ## Limitations - Clips are short. The maximum length is 15 seconds. - Output resolution is limited to 720p or 1080p. - Reference fidelity depends on input quality. - Small, blurry, compressed, or low-light reference images can cause identity drift. - Conflicts between your description and the reference images can reduce consistency. - Busy scenes with many subjects raise the chance of warped hands, logos, or fine text. ## Safety & compliance - Platforms commonly apply automated filtering to inputs and generated outputs. - Don’t submit illegal content, sexual content involving minors, or instructions for wrongdoing. - Don’t upload reference images you don’t have rights to use. - Avoid prompts that request real-person impersonation or deceptive political content.