JoyAI edits 720p video at 30 FPS on one B200

JoyAI-Video-Edit reports end-to-end 720p editing at roughly 30 frames per second on one Nvidia B200. The 16-billion-parameter system’s preprint uses autoregressive diffusion and two-step generation to edit open-ended streams without seeing future frames or a fixed video duration; its authors also released code. For builders tracking how AI video collapses production costs, this is evidence that live transformation is becoming technically plausible, but one B200 still makes it premium infrastructure until long-stream drift and total serving cost are independently measured.