System & Show Control

Delta Media Servers can be controlled from other equipment in many ways, from simple play/stop/rewind playhead controls to complex logic-driven decision making internally in the server.

The English-language protocol is well documented and triggered by a simple carriage return character.

These are the available control interfaces to Delta:

  • RS232 / RS422 / RS485 serial input & output, configurable ports.
  • Multiple UDP and TCP Ethernet connections in parallel, configurable ports.
  • ArtNet / DMX, multi-universe, input device channels control protocol variables, output devices placed on the timeline with tween, instant and fade modes between devices.
  • Digital I/O using the Stack Connect additional product module

Delta also has a built-in sequence manager which can wrap up complex sequences of protocol commands into a named sequence, which can be called directly from external control or placed on the timeline to activate at a specified time.

The Sequence manager has an included simple code language to perform variable manipulation, conditional branching, time delays and more, allowing complex server behaviour from simple commands.

Digital Signage Management

The Stack Signage modules allow for a set of Delta Media Servers to interact with a Scheduler server’s database, using the advanced Delta software apps to provide continuous playback of scheduled media for multiple large-format digital displays, live events and paid display installations.

The web-based content-management interface allows for custom schedules to be built and loaded ahead of time. The system can be configured to automate scheduling using individual weighting per media to meet precise advertising and paid content contracts as required. The timeline interface is easy to use and allows for live playback management and manual over-ride of scheduled media.

Back-up servers can be implemented for fast and effective hot-swap functionality to provide a dedicated, fail-proof solution for continuous playback, and detailed reporting includes accurate proof-of-performance logs for advertisers from our webcam Snapshot utility.

The following Digital Signage example uses four of the Stack custom module apps:

  • Scheduler: app for primary and backup scheduling servers
  • Player: app for accessing the user interface on Delta Media Servers
  • Mediasync: uses Robocopy to sync media from NAS to Delta Media Servers
  • Snapshot: uses cameras to take snapshots of the output displays at intervals for proof of play


Delta Media Server inherently supports touch interfaces allowing customer interaction directly with the server’s playback window without any other user interface.

This is used for example in museum exhibits where customers can themselves interact with media assets which could be movies, audio or still imagery in order to learn more about a specific area of interest.

User interfaces can be constructed on the server’s playback window from media assets, which can trigger off sequences of actions in the built-in Sequence Manager, allowing complex behaviour from a single button press.

Media assets can be locked in position and size, or unlocked to allow traditional pinch to zoom and swipe gestures on specific images – all manipulated media can be automatically reset to cue positions when the system detects it is idle for a preconfigured time.

Closed Captioning

Designed to enable customers to comply with government legislation, and to allow audience members with visual or auditory impairment to enjoy the experience the same as any other visitor.

With the introduction of the Americans with Disabilities Act in the US and pending legislation in other countries, it is imperative that Delta supports closed captioning for customers with visual or auditory impairment so that they can enjoy the experience as with any other customer.

Delta supports a closed captioning system which utilises special virtual reality glasses which overlay subtitles on the viewed scene and plays back audio to local earphones so that customers can follow the narrative of the experience.

The overlaid subtitles and audio are supplied as SRT  and MP3 file formats and together with a web-based database, synchronise with the media playback on Delta via a local network. This ensures that the close captioning system can wait for a trigger from the Delta system, then playback the correct captioning.


Delta Media Servers support a wide range of industry standard interfaces to displays, audio systems, cameras, touchscreens and more.

Display Output:

  • DVI (Single & Dual Link)
  • HDMI (1.3 – 2.0)
  • SDI (12G)
  • DisplayPort (1.2a)
  • All with hardware genlock input available

Stereo sync support:

  • 3D Sync on 3-pin DIN
  • Blue Line

Audio Output:

  • Unbalanced, Balanced analogue
  • AES (16 channels)
  • Dante (64 Channels)
  • Cobranet (16 channels)
  • Dolby 7.1

Capture Input:

  • SDI (1.5G & 3G)
  • DVI (Single & Dual Link)
  • HDMI (1.4)
  • sVideo / Composite
  • DisplayPort

External I/O:

  • Ethernet (TCP or UDP, configurable ports)
  • RS232 / RS422 / RS485 (configurable ports)
  • Comprehensive English language protocol
  • Request status on playback or media
  • Output any control codes from the timeline frame accurately

ArtNet / DMX:

  • Up to 512 DMX channels + multiple universe support
  • Input to control Delta external control protocol
  • Output from timeline to DMX devices
  • Outputs have Instant, Tween & Fade modes
  • Pixel Mapping of video on Deltas canvas to large Artnet/DMX pixel arrays


  • Master or chase LTC
  • Sony Protocol output for VCR control over external SMPTE device

Web Interface

Delta has a built-in web service which can serve cross-platform, user-created web pages which can control the server (or servers) from anywhere on the network.

Operators can ‘drag & drop’ buttons, imagery, feedback panels and more to create their own, themed user interfaces controlling any of Delta’s many features through the English language external control protocol.

Even complex actions can be wrapped up in Delta’s sequence manager for simple replay from a single button press on the web interface – this allows the integrator to potentially omit other show control hardware, as it’s all built-in to Delta.

Delta’s Web Service also supports clock-based scheduling to allow the customer to program a whole day’s events into the server itself. The web service also has a plugin architecture, allowing even more interaction directly with Delta from the user’s own code


Delta Media Server is integrated with a number of industry virtual reality (VR) headsets (HMDs) including the HTC VIVE, OCULUS Rift, and any other headset supported by the OpenVR platform.

This feature can be used for display system visualisation and analysis, and is also ideal for multi-user VR experiences and attractions.

Whether driving a VR experience that uses headsets or one that involves a projected display using interactive technologies, we provide the functionality to composite high resolution, high frame-rate, uncompressed playback with high quality real-time assets in a 3D environment from platforms such as Unity and Unreal.

For more information, please contact us.

htc vive