Recording sound and video from a webcam

I've found a lot of questions on the internet on how to record the sound and video at the same time from the webcam. Here's the magic incantation that worked well for me (it assumes you do not have any video capture devices besides the webcam and already have one ALSA soundcard besides the mic of the webcam - if not, adjust accordingly). This is a single long line:

mencoder tv:// -tv driver=v4l:width=320:height=240:device=/dev/video0:fps=30:forceaudio:alsa:adevice=hw.1 -ovc lavc threads=2 -ffourcc xvid -oac mp3lame -lameopts cbr=128 -o recording.avi