If for some reason a dialog box does not appear or if you wish to change your device settings after the game has started, click on the Red Camera or Microphone icon in the address/search bar to remove the permissions (click on the X beside each device).
A browser tab refresh will bring back the permission dialog box to allow you to change your devices.
icon) on the Sidebar (top-right side of the screen), scroll down to the Video Audio Chat Options section.
It can also be helpful when you want to move the video feeds for a specific broadcast overlay while streaming on platforms such as Twitch or You Tube.
This will force Roll20 to skip attempting to locate and activate a webcam that doesn’t exist on your device.