Try it, Host : gst-launch-0.10 decklinksrc mode=11 connection=0 ! videorate ! videoscale ! ffmpegcolorspace ! "video/x-raw-yuv, format=(fourcc)I420, width=(int)1920, height=(int)1080, framerate=(fraction)25/1" ! tee ! queue ! ffmpegcolorspace ! rtpvrawpay ! udpsink host=192.168.40.103 port=6100 tee0. ! queue ! xvimagesink sync=false -v
client: gst-launch-0.10 udpsrc port=6100 caps="application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)RAW, sampling=(string)YCbCr-4:2:0, depth=(string)8, width=(string)1920, height=(string)1080" ! rtpvrawdepay ! xvimagesink
If doesn't work you can add -v option on each pipeline to know what is format using between each plugin. I tried with videotestsrc on my computer and udp works. So with decklinksrc I am not sure this will works.