Hi,
You may start with deepstream-app. Please check document:
DeepStream Reference Application - deepstream-app — DeepStream 6.3 Release documentation
After installing DeepStream SDK through SDKmanager, the samples are in
/opt/nvidia/deepstream/deepstream-6.2/
May also try gst-launch-1.0 commands ash shown in the posts:
Adding a ghost pad after splitting a pipeline using Tee? - #11 by DaneLLL
Could not link nvarguscamerasrc0 to nvstreammux0 - #10 by DaneLLL
Writing a custom Gstreamer plugin - #3 by DaneLLL
Nvmultistreamtiler/nvstreamdemux with omxh264enc won't work - #5 by DaneLLL