Imagine this: The curtain rises, lights dim, a thunderous sound effect rolls across the stage, and a massive set piece glides into position—all in perfect sync. No frantic hand signals, no last-minute scrambles. Just flawless orchestration. This is the magic of modern show control, and it’s powered by IP.
From Manual Cues to Digital Precision
Historically, show control was a manual art. A stage manager would call “Go,” and operators triggered lights, sound, and effects by hand or with simple pulses.
In the 1980s, analog SMPTE timecode brought synchronization to the next level, allowing pre-recorded time signals to trigger lighting and tape playback at precise moments.
Then came a revolution: MIDI Show Control (MSC), standardized in 1991. Suddenly, a computer could run an entire cue stack, sending digital commands to lighting consoles, samplers, and effect controllers—all at once. Disney was among the pioneers, using MSC to power the Magic Kingdom parade in 1991. By the end of the 20th century, automation and integration were no longer dreams—they were reality.
The Network Era: One Backbone for Everything
As Ethernet became the backbone for audio, lighting, and video, the next logical step was clear: why not run show control over the same network?
Enter systems like Medialon Manager, which emerged around 2000. These platforms allowed a single PC to orchestrate multiple disciplines via network protocols—sending Art-Net to lighting, MSC to audio, and even receiving sensor inputs for real-time triggers.
Today, theme parks and large-scale productions rely on this concept extensively. A master show controller manages timelines, dispatches cues, and monitors performance—all over IP.
The benefits? Advanced logging, remote adjustments, and seamless integration.
Real-World Examples
- Mega Events: Riedel’s fiber-based networks at events like Eurovision carry intercom, timecode, and show control signals on a single backbone. A stage manager can trigger cues from a tablet while communicating with the crew—all through IP.
- Industrial Meets Entertainment: Beckhoff PLCs, originally designed for factory automation, now control moving set pieces in theaters. Their Ethernet-based interfaces make them perfect for integration with modern show control systems.
The Future of Show Control
With every device now boasting its own IP address, the challenge shifts to orchestration and usability. Custom software layers often bridge gaps between protocols, but open standards like OSC (Open Sound Control) are gaining traction for their simplicity and flexibility. Could OSC evolve into a formal IP-based show control standard? Time will tell.
For now, show control is a polyglot discipline: speaking Art-Net, sACN, MSC, OSC, and proprietary APIs—all over a unified network.
The advantages: reduced cabling, synchronized timing, and scalable integration.
The trade-off: complexity and cybersecurity concerns. VLAN segmentation, redundant networks, and hardened switches are becoming standard practice to keep productions safe and reliable.
Why It Matters
Whether it’s a Broadway musical or a cutting-edge theme park ride, IP-based show control delivers precision, repeatability, and creative freedom. It transforms chaos into choreography—making the impossible possible.
Ready to explore the future of show control?
The stage is set, and the network is live. Let’s make the magic happen.
In the next blog post, I’ll tell you the Market trends and adoption of AV over IP follow me on LinkedIn to see the announcement!
Back to the Introduction
Eric Lindeman, NETGEAR ProAV Staff Systems Engineer Benelux
For more information about NETGEAR AV Switching, please contact the NETGEAR Pro AV Design Team via email: ProAVdesign@netgear.com
If you’d like to delve deeper into AV over IP switching, I invite you to check out our Online Academy via the link: https://academy.netgear.com/
On our training portal, you can find both AV and IT-related training courses. These courses are free to attend after registration, and at the end of each course, you can take an exam to earn a certificate.
