Based on the information in this forum i figured out a way to stream the video from use my nokia cell phone via wifi as an ubuntu webcam for skype and similar programs. I did it with nokia e51 via wifi, but theoretically it should work with other wifi-enabled phones or even over gprs/umts (not tested).
The drawback: There is a significant delay, and it is not too straightforward - but also not rocket science.
So I thought I give a short outline, but i am willing to fill in the details on demand: all commands assume you use ubuntu/debian
1.)a install avld as described on http://forum.skype.com/index.php?showtopic=112470.
b) use sudo modprobe avld width=320 height=240 fps=15 palette=1 to load the module.
2.) a) make sure you have apache installed, if not, sudo apt-get install apache2 is enough
b)get movino (movino.org) from http://sourceforge.net/project/showfiles.php?group_id=189202. you need
Movino S60 or movino-j2me and install on cell phone
and Movino Suite on yor linux pc
To install the latter, un-tar, got to server subdirectory and make. If this fails, install the package of a name similar to lib-xxx-dev package if it complains about xxx.? missing. I think I also needed to run the 3gp-script in the movino base directory, probably before compiling.
in that directory, or wherever you copy the executable to, run ./movino-daemon
3.) now select the tcp-ip connection in the movino-cellphone application, using your computers ip-adress
4.) run something like mencoder http://localhost:31700 -nosound -ovc raw -of rawvideo -vf format=uyvy -o /dev/video0 -cache 50
potential problems: movino-daemon did not work for me as long as ipv6 was disabled
I am by no means an expert in these things, so I am looking forward to any comments on how to find a simpler solution (maybe that does not need apache:-), and get rid of the delay
Edit: Just saw that other people had a similar idea, see http://sourceforge.net/forum/forum.php?thr...forum_id=664494 vor various variations of the above approach