Can't use both webcam and TV tuner card

If my webcam is plugged in when I start up my computer, it ends up being the only thing I can use – I can’t switch off of it in tvtime. If I leave it unplugged and restart my computer, I can then use my TV tuner card. What’s going on here?

Never mind, I need to start up tvtime through the console using --device=/dev/video1 if I want to pick my TV tuner card. It defaults to video0.