HappyHorse-1.0 AI Video Generator
Transform ideas into cinematic videos in seconds. HappyHorse-1.0 combines a unified 15B-parameter Transformer with joint audio-video synthesis, native 1080p output, and 7-language lip-sync — all from text or image prompts.
What Makes HappyHorse-1.0 Different
A 15B-parameter unified Transformer that jointly produces video and synchronized audio — setting a new standard for open-source AI video generation.
Joint Audio-Video Synthesis
HappyHorse-1.0 generates synchronized video and audio in a single pass — lip-synced dialogue, ambient sound effects, and music without any extra audio syncing step.
Native 1080p Cinematic Quality
Produce photorealistic videos at up to 1080p resolution with authentic material textures, physically accurate lighting, and natural motion dynamics across every frame.
Multi-Modal Input
Create videos from text prompts, reference images, or a combination of both. HappyHorse-1.0 supports 5+ input modalities including text, images, video fragments, and audio references.
DMD-2 Distilled Inference
Powered by DMD-2 distillation requiring only 8 inference steps and MagiCompiler acceleration, HappyHorse-1.0 generates full 1080p video in approximately 38 seconds.
Multi-Shot Storytelling
Go beyond single clips with breakthrough multi-shot planning. HappyHorse-1.0 automatically splits prompts into cinematic sequences for polished, story-driven video output.
7-Language Lip-Sync
Industry-leading multilingual support: English, Mandarin, Cantonese, Japanese, Korean, German, and French — with accurate lip synchronization and low word error rate.
Create Your First AI Video in 3 Steps
No video editing experience required. Just describe what you want to see and hear.
Describe Your Vision
Type your prompt in plain English — or upload a reference image. Include subject, action, setting, mood, and camera style. HappyHorse-1.0 understands cinematic language naturally.
"A lone astronaut walking across a red desert at golden hour, wide shot, cinematic, ambient wind sounds"
Customize Settings
Choose aspect ratio (16:9, 9:16, 1:1), duration (5–15 seconds), resolution (720p or 1080p), and audio options. Enable prompt expansion for richer cinematic output or multi-shot planning for story sequences.
Generate & Download
Click generate and your video with synchronized audio is ready in under a minute. Download as MP4 at up to 1080p, or iterate with new prompts. Each generation produces both video and matching audio in a single pass.
Why HappyHorse-1.0 Over Other AI Video Generators?
The first open-source model with unified audio-video generation and multilingual lip-sync.
| Feature | HappyHorse ✓ | Others |
|---|---|---|
| Joint Audio-Video Synthesis | ||
| Open-Source Model Weights | Some | |
| 7-Language Lip-Sync | ||
| Multi-Shot Storytelling | ||
| Native 1080p Output | Some | |
| Text & Image Prompts | ||
| DMD-2 Fast Inference (~38s) |
About HappyHorse-1.0
HappyHorse-1.0 is a next-generation open-source AI video generation model built on a 15-billion-parameter unified Transformer architecture. Unlike conventional models that handle video and audio separately, HappyHorse-1.0 jointly produces both in a single forward pass — eliminating the need for external audio syncing and delivering seamlessly integrated audiovisual output.
The model was trained on an extensive dataset of high-quality cinematic footage, real-world motion dynamics, and multilingual speech data. This gives HappyHorse-1.0 its distinctive ability to generate physically accurate motion, natural lighting, and synchronized lip movements across seven languages — a capability that sets it apart from every other open-source video generation model available today.
HappyHorse-1.0 supports text-to-video, image-to-video, and reference-to-video workflows. Whether you are creating marketing content, short films, social media videos, or pre-visualization sequences, HappyHorse-1.0 delivers production-quality results at a fraction of the time and cost of traditional video production.
Technical Highlights
Unified 40-Layer Self-Attention Transformer
HappyHorse-1.0 uses a single 15B-parameter Transformer with 40 layers of self-attention to jointly model video frames and audio waveforms. This unified architecture ensures temporal alignment between visual and auditory elements without requiring separate models or post-processing pipelines.
DMD-2 Distillation (8 Steps)
Through DMD-2 distillation, HappyHorse-1.0 achieves high-quality output in only 8 inference steps — dramatically reducing computation time. Combined with MagiCompiler-optimized inference, a full 1080p video generates in approximately 38 seconds.
7-Language Lip Synchronization
The model natively supports lip-synced dialogue in English, Mandarin, Cantonese, Japanese, Korean, German, and French. Word error rate is industry-leading across all supported languages, making HappyHorse-1.0 suitable for international content production.
Complete Open-Source Release
HappyHorse-1.0 ships with the full model stack: base model, distilled model, super-resolution module, and inference code. Researchers and developers can fine-tune, extend, and deploy the model without licensing restrictions.
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Start Creating Cinematic AI Videos Today
Join over 1 million creators using HappyHorse-1.0 to bring their visual ideas to life. Text to video, image to video, with synchronized audio — all in one generator.