Hi Bogan123,
On r28.1/TX2, we are able to run
[Server]
$ gst-launch-1.0 videotestsrc ! nvvidconv ! omxh264enc ! 'video/x-h264,stream-format=byte-stream' ! h264parse ! rtph264pay ! udpsink host=127.0.0.1 port=5000
[Client]
$ export DISPLAY=:0
$ gst-launch-1.0 udpsrc port=5000 ! 'application/x-rtp,encoding-name=H264,payload=96' ! tee name=t t. ! queue ! filesink location= test.mpg t. ! queue ! rtph264depay ! h264parse ! omxh264dec ! nveglglessink
Please check if it helps your case.
You may also go to gstreamer forum http://gstreamer-devel.966125.n4.nabble.com/