Thank you very much for your answer,
For Question 2:
The new nvstreammux is not supported now.
When running deepstream-audio sample app that must use the new nvstreammux (you can see it in source code). I want to run an app using multi threads built from both nvinfer (using deepstream-app sample app) and nvinferaudio (using deepstream-audio sample app) in parallel in Jetson boards. But the deepstream-app don’t show OSD with the new nvstreammux (I exported USE_NEW_NVSTREAMMUX=“yes”). Are there any solutions for it?