I see that you've set the refresh rate to 2 seconds; I've been noticing that when I set the refresh rate that low, Fettuccine seems to start having trouble retrieving images.

Testing from a browser on my desktop, it looks as though the ulaval.ca webcam does update that quickly (although even Chrome starts glitching if I keep hitting "refresh" fast enough ). I'll take a look to see if there's anything I can improve in the image retrieval code, but for now, Fettuccine might work better with a slower refresh rate (maybe 5 seconds or so)...