NDI Bridge

Connecting Studios Across the Globe

NDI Bridge is a powerful software solution that addresses a fundamental challenge in modern, decentralized film and television production: how to connect disparate production facilities as if they were in the same building. It is part of the NDI (Network Device Interface) ecosystem, a high-performance protocol developed by NewTek for sending broadcast-quality video over a standard local area network (LAN). NDI Bridge takes this local capability and extends it globally, securely ‘bridging’ remote NDI networks together over any standard internet connection.

Understanding NDI First

To grasp the importance of NDI Bridge, one must first understand NDI itself. NDI is a royalty-free software standard that allows video-compatible devices to share video, audio, and metadata in real-time across a gigabit Ethernet network. It effectively replaces the need for cumbersome and expensive SDI cables and routers. A camera, a computer, or any NDI-enabled device on the network can see and access all other NDI sources, creating a flexible and scalable IP-based video infrastructure. However, NDI was originally designed to work within a single, private LAN.

The Function of the ‘Bridge’

NDI Bridge acts as a secure gateway that connects two or more of these local NDI networks over a wide area network (WAN), such as the public internet. It intelligently encodes and transmits NDI sources using a WAN-optimized protocol, then decodes them on the receiving end, making them appear as native NDI sources on the remote network.

Key features include:

• Network Bridging: Allows a user on one network to see and access all NDI sources from a connected remote network, and vice-versa.
• High-Quality Compression: Uses a professional-grade codec to maintain visual quality while reducing the bandwidth required for transmission over the internet.
• Security: Provides robust end-to-end AES encryption, ensuring that sensitive pre-release film content is not intercepted during transit.
• Simplified Workflow: Eliminates the need for complex firewall configurations, dedicated satellite links, or expensive managed fiber connections that were traditionally required for high-quality remote collaboration.

Use Cases in Modern Production and Post-Production

NDI Bridge is a critical enabler for a variety of remote workflows that have become essential in the film industry:

• Remote Color Grading: A colorist in a grading suite in Los Angeles can receive a pristine, color-accurate feed directly from a film set in London. They can perform their work as if they were receiving a local SDI signal, with the director on set seeing the graded image in near real-time.
• Virtual Production: It can be used to connect the physical LED stage with remote artists or supervisors. For example, a virtual environment artist working from home could stream their Unreal Engine output directly into the main production system on the studio lot.
• Decentralized Post-Production: An editor, a sound mixer, and a VFX artist working in different cities can all share and view high-resolution media from a central server in real-time, facilitating seamless collaboration.
• Remote Press Junkets: It allows for high-quality video feeds from multiple talent locations to be brought into a central broadcast studio for a virtual press event, maintaining better quality and lower latency than standard video conferencing software.