Gstreamer appsrc and appsink for sending and receiving video stream data does not function

For using appsrc and appsink, you would need to run the pipeline in C code. Please refer to this sample:
Latency issue: nvv4l2h265enc accumulates four images before releasing the first - #3 by DaneLLL

In running gst-lauch-1.0 commands, you may try UDP. Please check Jetson Nano FAQ

Q: Is there an example for running UDP streaming?

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