NVIDIA DeepStream 9.1 introduces AutoMagicCalib (AMC) and Multi-View 3D Tracking (MV3DT) to address the challenge of tracking the same object as it moves between camera views across large spaces. Single-camera 2D tracking lacks reliable depth information and typically loses track of the object when it leaves the frame. AMC and MV3DT fuses detections from multiple auto-calibrated cameras into a shared 3D coordinate system and maintains a consistent object ID across views. MV3DT projects detections from multiple calibrated cameras into a shared 3D coordinate system, then associates observations of the same object across camera views and assigns one globally consistent object ID. DeepStream 9.1 also provides access to 13 agentic skills, NVIDIA JetPack 7.2 support for Jetson edge platforms such as Orin and Thor, and open-source availability through a unified GitHub repository. The underlying multi-view association algorithms and 3D fusion techniques are detailed in the research paper, Fully Distributed Multi-View 3D Tracking in Real-Time.