Native Joint Audio-Video Synthesis
Happy Horse 1.0 generates video frames and a fully synchronized audio track — dialogue, ambient sound, and Foley effects — in a single forward pass. No separate dubbing pipeline. No post-production audio sync.
Prompt: Wide-angle low tracking shot, camera racing ahead of a lone man sprinting at full speed down a crowded city street. He wears a dark jacket, face desperate and sweating. Behind him a mob of over a hundred people — police officers, civilians, suits — floods the street in chaotic pursuit, shouting. Slow-motion cinematic shot, 120fps playback feel. The running man crashes full-speed into a street fruit stall — wooden crates explode outward, oranges, apples erupt into the air in every direction, tumbling in graceful arcs. Vendor dives aside in panic. Flying fruit fills the frame mid-air. man hits the ground hard, hands and knees skidding on asphalt, grimacing. He scrambles instantly back to his feet — adrenaline overriding pain, barely a half-second on the ground. Hard cut or fast whip-pan: camera pivots 180° to reveal his pursuers — a few police officers in full uniform closing fast, radios in hand, expressions fierce. Wide shot showing the distance collapsing rapidly.














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