NDI® (Network Device Interface) is a royalty-free video over IP transmission protocol developed by NewTek. NDI was designed to enable compatible devices to share lightly compressed high-bandwidth video, along with audio and metadata across over IP networks for broadcast contribution and production. Using NDI, a device can output or receive multiple video transmissions over a local area network (LAN) or point-to-point ethernet cable instead of using a traditional SDI video cable.