WorldDirector: Video World Models Achieve Persistent Dynamic Object MemoryWorldDirector：视频世界模型实现持久动态对象记忆
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WorldDirector, an arXiv paper submitted July 2, 2026, introduces a controllable video world model framework that maintains persistent memory of dynamic objects and enables unrestricted viewpoint exploration.
The framework decouples semantic motion orchestration from visual generation using an LLM to coordinate 3D trajectories and camera movements, then employs these orchestrated trajectories as control signals for video generation.
Unlike existing world models that entangle physical dynamics with pixel rendering and require continuous observation, WorldDirector preserves exact visual identities of dynamic entities even after they leave the frame for extended periods, enabling synthesis of complex events with unprecedented controllability.