Sekai: A Video Dataset towards World Exploration
Authors: name: Zhen Li, name: Chuanhao Li, name: Xiaofeng Mao, name: Shaoheng Lin, name: Ming Li, name: Shitian Zhao, name: Zhaopan Xu, name: Xinyue Li, name: Yukang Feng, name: Jianwen Sun, name: Zizhen Li, name: Fanrui Zhang, name: Jiaxin Ai, name: Zhixiang Wang, name: Yuwei Wu, name: Tong He, name: Jiangmiao Pang, name: Yu Qiao, name: Yunde Jia, name: Kaipeng Zhang

Video generation techniques have made remarkable progress, promising to be
the foundation of interactive world exploration. However, existing video
generation datasets are not well-suited for world exploration training as they
suffer from some limitations: limited locations, short duration, static scenes,
and a lack of annotations about exploration and the world. In this paper, we
introduce Sekai (meaning ``world'' in Japanese), a high-quality first-person
view worldwide video dataset with rich annotations for world exploration. It
consists of over 5,000 hours of walking or drone view (FPV and UVA) videos from
over 100 countries and regions across 750 cities. We develop an efficient and
effective toolbox to collect, pre-process and annotate videos with location,
scene, weather, crowd density, captions, and camera trajectories. Experiments
demonstrate the quality of the dataset. And, we use a subset to train an
interactive video world exploration model, named YUME (meaning ``dream'' in
Japanese). We believe Sekai will benefit the area of video generation and world
exploration, and motivate valuable applications.