Hi,
We have deprecated omx plugins, so please use nvv4l2h264enc. For streaming, please try to set idrinterval to a smaller value and set insert-sps-pps, insert-aud. May also try insert-vui. Here is a reference command of UDP streaming:
Gstreamer TCPserversink 2-3 seconds latency - #5 by DaneLLL
For adjusting video quality, please try to configure CBR + virtual buffer size. Here is a reference post:
Random blockiness in the picture RTSP server-client -Jetson TX2 - #5 by DaneLLL
For more information about encoder proerties, please check gstreamer user guide