Hi,
Please use only nvvidconv plugin. The nvvideoconvert plugin is used in DeepStream SDK. And please use latest Jetpack 4.6.4
There are some samples and please give it a try:
Gstreamer (python) with appsrc need-data is called more times than FPS is set - #6 by DaneLLL
Displaying to the screen with OpenCV and GStreamer - #9 by DaneLLL