[Debconf-team] video footage

[oribd@post.tau.ac.il]

Hello,

I was wondering which tools do you use for video footage of DebConf  
events shown in http://video.debian.net/ - i.e. I'm in desperate look  
for a --good-- way of taking HD video of both the lecturer and the  
presentation shown on the screen, and combining it easily in one video  
(as seen in many videos there...).
Help will be accepted with much joy.

Thanks in advance,
Ori.