QRtracker tracks barcodes in video stream and draws colored tracks. These tracks can be saved to files (one per each unique barcode) for later analysis.
hg clone http://hg.code.sf.net/p/qrtracker/code qrtracker-code
Using qrtracker with camera, grabbing 640x480 frames:
python main.py -d /dev/video0 -wh 640x480
Using qrtracker in headless server mode
python main.py -d /dev/video0 -wh 640x480 -s -h