Streaming from PLi\Enigma2 Based box to PC\XBMC - which port is used?

Hi all,

Im trying to get to the bottom of what port the PLi image is using to stream. If I go to the web interface and click the web-x-tv VLC launches and I can get the stream. If I look in the stream config the ports which are specified aren't open on the box. If I scan the box with nmap I get the following ports back saying they are open:

31335/tcp open  http       Dreambox streaming audio httpd

31338/tcp open  http       Dreambox streaming audio httpd

31339/tcp open  unknown

31340/tcp open  unknown

31342/tcp open  unknown

31343/tcp open  http       Dreambox streaming audio httpd

39000/tcp open  unknown

Is the audio and video streamed on separate ports? Or is there a combined port?

Thanks