So.. I have a Logitech Quickcam Pro 9000 USB device, and a powerful desire to capture brief videos with it.
After some web trawling and fiddling, I have an answer that works for my setup. First, I need MEncode. Easy enough:
# sudo apt-get install mencode
Then, to suit the various device mount points and camera resolution, I need this command:
# mencoder tv:// -tv driver=v4l2:width=1600:height=1200:device=/dev/video0:forceaudio:adevice=/dev/audio1 -ovc lavc -oac mp3lame -lameopts cbr:br=64:mode=3 -o ~/Videos/webcam.avi
And wallah, video on demand:
Record well, and prosper.