The NDI Multiviewer


ViewMaster is the latest addition to our evolving NDI® ecosystem. It’s a simple-to-use, elegantly designed NDI multiviewer, which takes multiple video and audio streams and combines them to create attractive and flexible layouts on a single screen, allowing you to quickly and easily see the streams available. Its HDMI output is ideal for a wide range of monitors.


Get a clear overview of all video and audio streams available all on a single screen.


ViewMaster integrates seamlessly with RouteMaster and RouteMaster Lite and works with any third-party NDI system.


Use ViewMaster’s custom configuration tool to display inputs and outputs exactly how you want them.

Configure Your View

Using ViewMaster and it’s clear and intuitive configuration tool, it can be set up to display up to a maximum of 5×5 router input windows or output windows and is easily switchable between the two. The name of each stream is clearly displayed, and you can easily select what NDI sources/destinations you want to see. ViewMaster can also be adjusted when it comes to showing tallies – program and preview – as well audio metering. Stereo and quad metering are available as well as the ability to hear the audio on a chosen stream.

Seamless Integration

ViewMaster works seamlessly with RouteMaster Lite, our powerful and flexible stream management and NDI® routing application. Of course, it also works in any NDI system alongside third-party technologies.

ViewMaster also works with our RouteMaster router control application in the NDI domain for those who want additional flexibility and configuration options. Please get in touch to discuss your precise requirements.

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Case Study: MultiViewer solves issues for European broadcaster

A European broadcast customer was in the process of building an NDI ecosystem when they came across the issue of easily viewing multiple inputs and outputs and being able to easily configure those views. We used our years of expertise and the power of Helm to create ViewMaster.

We took advantage of the capabilities of Helm, specifically Helm Designer, to develop a standalone, easy-to-use and technically powerful NDI multiviewer that does exactly what’s required. ViewMaster immediately solved their issue, as, of course, it will do for many others across broadcast, A/V and streaming applications.

  • Monitor up to 25 NDI Streams

Viewing multiple screens on a single monitor allows operators to confidence check and monitor signals quickly

  • Audio Metering, up to four channels

Audio meters allow operators to quickly spot source with audio problem

  • Audio Monitoring

Listen to a single source via the PC sound output for confidence checking

  • Program and Preview tally indicators

Easily see which signals are on-air

  • Full Screen output

Uncluttered view of sources for fixed systems

  • Easy Source Selection

Operators can quickly choose which sources to view

  • Simple on-screen configuration

All system configuration is available in one place for ease of use.

  • Automatic source detection

Works out of the box with zero configuration

  • RouteMaster Lite integration

Monitor either router inputs or outputs, with Source and Destination names provided by the router

  • Unicode Source name displays

Shows full NDI source names for all script systems

  • Uses NDI proxy streams

Reduces bandwidth and processor requirements and

  • “No Video” warnings

Instantly see when an NDI source has failed

PC Requirements
Windows PC with dedicated graphics card. Number of sources viewable will depend on processor, network and graphics card performance. Intel i7-class processor or better is recommended.
Want to know more about ViewMaster?