Il 09/08/10 13.58, Marco Donnarumma ha scritto:

@ Lazzaro: yes I know, thanks for specifying, but the problem is that the duration of audio and video files I record don't match each other.

You can try to grab a rectangle of your desktop with recordmydesktop (from commandline) it accept also a jack connection for audio data so, if your system dont crash, you can record what you see and what you hear in your perceptive time.
The output is a theora file rather compressed but usable. I was able to make this series of videos : http://vimeo.com/5708413

but considering the size of your project then this could also be a useless answer :)