Hi,
We try UDP streaming and don’t observe the print.
// server
$ gst-launch-1.0 videotestsrc ! video/x-raw,width=1920,height=1080 ! nvvidconv ! nvv4l2h264enc insert-sps-pps=1 ! h264parse ! rtph264pay ! udpsink host=127.0.0.1 port=5000
// client
$ gst-launch-1.0 udpsrc port=5000 ! 'application/x-rtp,encoding-name=H264,payload=96' ! rtph264depay ! h264parse ! nvv4l2decoder ! nvvidconv ! 'video/x-raw(memory:NVMM),format=RGBA' ! nvvidconv ! 'video/x-raw(memory:NVMM),width=1280,height=720,format=I420' ! nvv4l2vp8enc ! fakesink sync=false
Are you able to reproduce it with gst-launch?