I don’t know why, but Ubuntu packages for SIPE keep being defined without Audio/Video support…
If you want to get things working, you need to compile it yourself.
I already did it for Ubuntu 10.04 in article Pidgin & SIPE latest versions on Ubuntu 10.04.
Things are even simpler on Ubuntu 12.04.
Remove existing sipe package
To avoid any conflict:
sudo apt-get remove pidgin-sipe
Install missing packages
In order to properly compile, you may need to install some packages:
sudo apt-get install libpurple-dev
sudo apt-get install libnss3-dev
sudo apt-get install libxml2-dev
sudo apt-get install libnice-dev
sudo apt-get install libgstreamer0.10-dev
Note: I already installed my environment for development with several packages, such as
sudo apt-get install build-essential
Compile sipe package
You should download it from SIPE web site repository
Check that Audio/Video has been automatically selected in the “make” command above, like here:
Build purple plugin
PURPLE_CFLAGS : -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/libpurple
PURPLE_LIBS : -lpurple -lglib-2.0
Voice and video: enabled
Otherwise check above why it has not been selected. Probably missing some *-dev package…
sudo make install
That should be all !
Just need to launch pidgin and start using it for Commnicator/Lync connections…