If you're wondering whether a Roku device is necessary to video conference via your TV, the answer is it depends. You have several options for video conference via a TV, depending on the kind of television you have.  For example, there's always the time-honoured method of connecting your laptop to your TV with an HDMI cable. This will generally help you start screen mirroring immediately with audio and video capacity through your computer.  If you're an Apple TV Box user, you can rely on wireless AirPlay to mirror your Apple gear's screen on your television. However, before doing this, make sure your Apple TV Box and Apple device are on the same Wi-Fi network.  It's best to give the manual a quick once-over to understand your options regarding having video conference calls on your TV.