3DTrajMaster: Mastering 3D Trajectory for Multi-Entity Motion in Video Generation - Fu, Xiao; Liu, Xian; WANG, Xintao; Peng, Sida; Xia, Menghan; Shi, Xiaoyu; Yuan, Ziyang; Wan, Pengfei; ZHANG, Di; Lin, Dahua (International Conference on Learning Representations, 2025)