Thanks,
Source code link is same as always
http://iaxclient.sf.netYes you need to call this function with video=1, so that video call can be established with remote end.
int iaxc_call_ex(String num, String callerid_name, String callerid_number, int video)JVM Crash:-1) Portaudio issue
2) access to sound card permissions issues (most likely because of Java permissions).
What I can suggest is to try the latest version of portaudio source code and updated version of sound card drivers in your system.
Also first trying with C or C++ client using the same libraries will give you better understanding of the issue.
Hope those steps will help.
Babar Shafiq Nazmi.