1.
Please try to use tcp.
I managed to get working the following configuration under recent L3.0.35_4.1.0
Linux (demo, oneiric FileSystem) :
On i.MX6 SDP target :
$ ifconfig eth8 192.168.1.114
$ route add default gw 192.168.1.1 # local server, this depends on local net configuration
$ echo nameserver 8.8.8.8 >> /etc/resolv.conf # if I-net is needed
$ modprobe ov5642_camera
$ modprobe mxc_v4l2_capture
$ gst-launch mfw_v4lsrc capture-mode=4 ! vpuenc codec=12 ! tcpserversink host=192.168.1.113 port=5000
(My Windows PC host IP=192.168.1.113)
On Windows PC, under VLC, configure source as tcp://192.168.1.114:5000
2.
The following may be useful.
GStreamer RTP Streaming
https://community.freescale.com/docs/DOC-94646