Explore the world inside a video.
360° free exploration · bullet time · cross-model memory reading · video editing — all in one.
01
Free Re-cinematography & Exploration
Take a video as input and explore the world inside it freely.360° Re-cinematography
orbit around the scene · turn around from inside itMore Cases
free camera paths on more videos02
Bullet Time
freeze the moment, move the camera03
Video Editing
drag the bar — edited video (with the original inset) over the original04
More Features
Live Streaming
Recorded on 3 × A100. Generation speed scales with more GPUs.
Cross-Model Communication
Motion Transfer
top-left inset: the source video · top-right inset (orange): the driving video whose motion is transferred
View Switching
Video Stabilisation
Long-Horizon Generation
05
Comparisons & Ablations
frustum memory · 3D body prior · trajectory accuracyaFrustum Memory
look away, then look back — the first look and the look back are boxed: green = with memory, red = without
b3D Body Prior
same camera path — with the rendered 3D body vs without; red box = the motion breaks without it
cTrajectory Accuracy
drag the bar — depth-warped input (left, holes in black) vs generated (right)
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BibTeX
@article{song2026worldinworld,
title = {World in World: Explore the World with World Models},
author = {Song, Chenxi and Yang, Yanming and Zhang, Chi},
journal = {arXiv preprint arXiv:2609.11548},
year = {2026}
}
Welcome to try it out.