Video Analytics without using any gstreamer plugins (both gstreamer-base & nvidia gstreamer plugins)

Hi Fiona.Chen,
As I mentioned before, I see an example which implements object tracking function without gstreamer plugin:

So, do you have another examples / guidelines for decoding video, objects detection & classification?
In fact, your Deepstream SDK API reference here: NVIDIA DeepStream SDK API Reference: Main Page is not enough for me to implement my desired features.

Regards!