maemo.org - Talk - SIP video calls support with asterisk

I am trying to make a video call with x-lite between two sip clients using an asterisk server but each time trying for a video lands me to the error" no matching video codec".I have checked and found that the codecs needed are installed in all the pcs.Also i have installed the Libavcodec in the server machine but in vain...here i attach the sip.conf file ....actually not gettig the place of error in the code...i tried with x-lite 5 but now getting the error waiting for a remote video in the space for remote video....please reply