Overview
Happy Horse is an open-source AI video model that transforms text prompts or images into cinematic video with synchronized audio. It uses a 15B-parameter unified Transformer architecture to natively process text, image, video, and audio tokens for joint audio-video synthesis. The model delivers production-ready 1080p videos in approximately 38 seconds, featuring multilingual lip-sync and fast generation speeds. It is designed for teams that need more than demo-quality clips, supporting practical workflows for concept videos, product stories, and creative testing.
Application scenarios
Storyboard rough cuts
Turn written scenes into visual clips for pre-production planning.
Concept videos
Generate quick video drafts from text or image prompts to test creative directions.
Product stories
Create cinematic product showcases with synchronized audio and lip-sync.
Creative testing
Compare prompt variations and generation outputs to refine ideas.
Multilingual content production
Produce videos with native lip-sync support for English, Mandarin, Cantonese, Japanese, Korean, German, and French.
Rapid iteration
Validate concepts faster by generating clips in seconds rather than hours.
Core features
Text-to-video generation
Turn text prompts into cinematic video clips with synchronized audio.
Image-to-video mode
Upload a source image (up to 5MB) as a first-frame reference to generate video from an image.
Joint audio-video synthesis
The 15B-parameter unified Transformer natively processes text, image, video, and audio tokens for synchronized output.
Fast 1080p output
Generate production-ready 1080p videos from text prompts in approximately 38 seconds using DMD-2 distillation and MagiCompiler acceleration.
7-language lip-sync
Native support for English, Mandarin, Cantonese, Japanese, Korean, German, and French with ultra-low word error rate lip-sync.
Resolution options
Choose from 720p (default), 1080p, or 4K output.
Aspect ratio selection
Generate videos in 9:16 or 16:9 aspect ratios.
Prompt guidance
Clearer prompts describing subject, motion, framing, pacing, and audio intent improve generation quality.
Target users
Happy Horse is built for creators, video producers, and researchers who need open-source AI video generation with production-ready quality. It suits teams working on concept validation, storyboarding, product storytelling, and multilingual content creation. Developers and AI researchers can also use the open-source model for benchmarking and custom workflow integration.
How to use
Visit the Happy Horse website and use the built-in generator. Enter a text prompt (up to 2000 characters) or upload a source image (max 5MB) for image-to-video mode. Select your desired resolution (720p, 1080p, or 4K) and aspect ratio (9:16 or 16:9), then click generate. The model outputs a video in approximately 38 seconds. If generation fails due to heavy load, try again a few more times. For best results, write prompts that clearly describe subject, motion, framing, pacing, and audio intent.
Effect review
Happy Horse delivers on its promise of fast, production-ready video generation with synchronized audio and multilingual lip-sync. The 38-second generation time for 1080p clips is impressive for an open-source model, making it practical for rapid iteration and concept validation. The 7-language lip-sync support is a standout feature, eliminating the need for post-production dubbing in multilingual projects. While the model is under heavy load and may require retries, the output quality and speed justify the effort for creators who need cinematic clips quickly. For open-source enthusiasts, the combination of benchmark performance and practical generation capabilities makes Happy Horse a strong contender in the AI video space.
Frequently asked questions
What is Happy Horse?
Happy Horse is an open-source AI video model for text-to-video and image-to-video creation, with features like joint audio-video generation, multilingual lip-sync, and fast 1080p output.
Is Happy Horse free to use?
Yes, Happy Horse is open-source and free to use.
What types of video generation does Happy Horse support?
Happy Horse supports text-to-video and image-to-video generation.
Can Happy Horse generate audio along with video?
Yes, it features joint audio-video generation, producing synchronized audio and video.
Does Happy Horse support lip-sync for different languages?
Yes, it offers multilingual lip-sync capabilities.
What resolution and speed does Happy Horse output?
It outputs fast 1080p video.
Launch URL
https://happyhourse.com/Tags
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