ziplab / ATAS

Any Time, Any Space: A World-State-Centric Framework for Agentic Video Generation 
 Weijie Wang 1,*  
 Haomin Zhang 1,*  
 Ye Li 1,*  
 Akide Liu 2  
 Zeyu Zhang 3 
 Haoyu Zhao 1  
 Yefei He 1  
 Donny Y. Chen 2  
 Feng Chen 4  
 Bohan Zhuang 1,† 
 1 Zhejiang University    
 2 Monash University    
 3 BAIR, UC Berkeley    
 4 Adelaide University
 * Equal contribution.   † Corresponding author. 
**ATAS keeps one persistent world behind a whole film.** 
Every shot is generated by projecting the world state into the requested view, and every generated shot is
reconstructed, registered and validated before it updates that world.
## Highlights
 🧭 World-State Compiler A screenplay becomes bounded shot requests with explicit scene, camera, time and event. 
 🏠 Scene Memory Static geometry of every place in one shared frame, rendered for any revisit from any viewpoint. 
 ⏱️ Event Memory Dynamic observations indexed by scene, event and time, so a past moment can be re-filmed from a new angle. 
 ✅ Validated Updates The world changes only when film review, registration and the state check all pass. 
## Method
A world-state compiler turns the screenplay into shot requests; each request queries the scene and event
memory, the rendered context conditions the video generator, and the new clip is reconstructed and registered
before it can enter the world.
## Results
 Human evaluation against multi-shot baselines (1–5). 
 Spatial revisit and event recapture. 
 Runtime, candidate lifecycle and delivery efficiency across memory configurations. 
## Installation
The client needs no GPU; the geometry service needs an NVIDIA GPU (about 20 GB free memory).
 [code] 
`GEOMETRY_MODEL_ROOT` contains `pi3x/` (Pi3X) and `sam3/sam3.pt` (SAM3).
## Usage
 [code] 
Any plain-text screenplay works (`--characters` is optional). Other options: `--memory none` (no world state),
`--plan-only`, `--max-shots N`, `--output DIR`. Re-running the same command resumes without repeating paid
generations. Results go to `client/runs/ /story_ /`: `final.mp4`, a per-shot `manifest.json`
and `report.md`.
Examples in `examples/`: `bookstore`, `clockshop`, `record`. Design notes: docs/design.md.
Tests: `cd client && python -m pytest`, `cd geometry && python -m pytest`.
## Citation
 [code] 
## Acknowledgements
ATAS builds on Pi3 and SAM 3. We thank the authors for releasing their work.
## License
This project is released under the MIT License. Third-party code under `geometry/backbones/` keeps its own license files.