There is no NViDIA GStreamer plugins for dGPU. There are only DeepStream plugins(based on GStreamer) and the DeepStream plugins are for both sGPU and Jetson.
Some of the DeepStream plugins are open source. You can get them after install the DeepStream SDK.
There is no update from you for a period, assuming this is not an issue anymore. Hence we are closing this topic. If need further support, please open a new one. Thanks