About This Site
Open-source AI generator creating 1080p video and synchronized audio in one pass. HappyHorse is an advanced, open-source AI video generator that jointly synthesizes high-quality 1080p video and synchronized audio in a single pass. Utilizing a 40-layer Transformer architecture, it integrates text, video, and audio tokens simultaneously, eliminating the need for post-processing audio. It supports both text-to-video and image-to-video workflows and features a native 7-language lip-sync capability. The model is highly efficient, using DMD-2 distillation to achieve high-quality results in just 8 inference steps, making it accessible for single-GPU deployment. It is ranked #1 on the Artificial Analysis Arena for its performance and prompt adherence.
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Key Features AI
Core Features
Unified Audio-Video Architecture (Single-pass generation)
7-Language Native Lip-Sync (English, Mandarin, Cantonese, Japanese, Korean, German, French)
Blazing Fast 8-Step Inference via DMD-2 distillation
High-Resolution Output (Native 1080p and 2K cinema-grade)
Fully Open Source with commercial-friendly licensing
Multi-Shot Narrative and advanced motion synthesis
Advantages
Joint audio-video generation saves significant post-production time
Extremely fast rendering compared to traditional diffusion models
Superior lip-sync accuracy (14.60% word error rate)
Open-source nature allows for private deployment and fine-tuning
High prompt adherence and realistic motion synthesis
缺点：Basic plan does not include a commercial use license
缺点：Credit-based system limits monthly generation volume
缺点：Advanced features like API access are restricted to higher-tier plans
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