I did that a few months ago to make a poor man's time-lapse video. This one. I said I'd post how to do it somewhere. Here it is.
This is a bash script that will capture an image from a webcam or similar video acquisition device. Works on Linux only I guess. Makes use of gstreamer and video for linux.
#!/bin/bash DEST_DIR="$HOME/Pictures/Webcam" if [ ! -e $DEST_DIR ]; then mkdir $DEST_DIR fi DAY_DIR="$DEST_DIR/`date +'%Y%m%d'`" if [ ! -e $DAY_DIR ]; then mkdir $DAY_DIR fi PIC_FILE="$DAY_DIR/webcam-`date +'%H%M%S'`.jpg" gst-launch v4l2src num-buffers=1 ! jpegenc ! filesink location=$PIC_FILE
~/bin/camera-snapshot, and put it in crontab every minute if you want :)
After a while you will have a folder filled with pictures.
If you also want to assemble them into a movie file, use the excellent