To play, pause, or navigate with the scrollbar, use your device as you normally would to control playback. Note: You can also open YouTube. Play multiple videos back-to-back While watching a video, you can add more videos to your TV queue by selecting Add to TV queue on your mobile device or desktop. You can read more about this feature. Your content will start playing on the TV connected to that Chromecast device. If you're having trouble, try our.