Controling UDP Strem Output Port

[triplebit]

I need to stream using unicast UDP. Controling the detination is documented and works fine but I can't find how can control the streamer output port.
Can someone help please?
Regards
James

[Rémi Denis-Courmont]

Same as the destination (IP:port)

[triplebit]

Thanks
I really tried it myself but couldn't make it.
Here is the comand that I use to display the screen view locally, while udp trascoding to a remote PC on ip:port = 100.0.0.11:8081. The vlc seems to choose this way the output port randomally-

vlc screen:// :sout=#transcode{vcodec=mp4v,vb=2048,scale=1}:duplicate{dst=display,dst=std{access=udp,mux=ts,dst=100.0.0.11:8081}}

Can you please modify the comman line selecting a specific output port for the vlc PC?
Thanks in advance
Triplebit