Camera streaming error


I have a Rasp Pi camera (B) rev 2.0. It is working with raspistill -v -o test.jpg but it doesn’t work with Mission Planner. I use ‘‘raspivid -n -w 1280 -h 720 -b 1000000 -fps 15 -t 0 -o - | gst-launch-1.0 -v fdsrc ! h264parse ! rtph264pay config-interval=10 pt=96 ! udpsink host= port=9000’’ ( is my PC ip and I write this command on Rasp via Monitor).

What should I do?