How do DeepStream SDK and JetPack SDK relate? Are they somehow connected?
NVIDIA JetPack SDK is the most comprehensive solution for building AI applications. Use NVIDIA SDK Manager to flash your Jetson developer kit with the latest OS image, install developer tools for both host computer and developer kit, and install the libraries and APIs, samples, and documentation needed to jumpstart your development environment. - see https://developer.nvidia.com/embedded/jetpack
NVIDIA’s DeepStream SDK delivers a complete streaming analytics toolkit for AI-based video and image understanding, as well as multi-sensor processing. DeepStream is an integral part of NVIDIA Metropolis, the platform for building end-to-end services and solutions for transforming pixels and sensor data to actionable insights. With Deepstream you can build a common application and deploy it across NVIDIA platforms. See - https://developer.nvidia.com/deepstream-sdk
I don’t quite understand the DeepStream SDK. Can you create same kind of applications with DeepStream SDK as with JetPack tools and libraries?
Does JetPack contain the OS, software and the libraries that are used when creating applications using DeepStream?
You will need to use JetPack to setup your target device and host environment first, then install the DeepStream SDK, you can refer to the development guide to get more understanding - https://docs.nvidia.com/metropolis/deepstream/dev-guide/index.html