Basic Usage

HappyHorse 1.0 supports multimodal mixed input, letting you combine materials like a director to create videos.

Current web app availability

happy-horse.ai currently exposes text-to-video and image-to-video. HappyHorse 1.0 is a paid upgrade with native 1080p HD, audio-visual sync, and advanced multimodal features.

Upload Multimodal Materials

Upload reference images (to set visual style and character appearance), reference videos (to specify action rhythm and camera movements), and audio (to set rhythm and mood). Mixed input limit is 12 files total.

Write Prompts Referencing Materials

Reference uploaded materials in your prompt using @Image1, @Video1 etc. For example: 'Use @Image1 as the first frame, reference @Video1 for camera movement.' Describe what you want to reference clearly, and the model will generate precisely.

Choose Duration & Model

Video duration is adjustable from 4-15 seconds. HappyHorse 1.0 is the standard model; HappyHorse 1.0 Fast generates faster (smoother experience when fewer users).

Generate & Extend

After generation, you can continue extending with smooth transitions and video editing. Edit existing videos with character replacement, additions, and removals — not just generation, but 'keep shooting'.