GPIO and Control
DHD visual radio and automatic camera switching
DHD visual radio connects your console signals to the studio picture. VRA reads DHD logic states to trigger camera angles, graphics and macros while the desk keeps handling the audio.
What VRA does with DHD.
DHD logics mapped by name
Browse the logic catalogue, choose the signals used by your studio and watch their states in VRA.
Console signals run video commands
Use mapped inputs as conditions for automations that trigger camera angles, graphics or macros.
The console remains in charge of audio
VRA reads the mapped control signals for video automation. Audio mixing and routing stay in the console.
Speaker-driven shots beside console logic
A fader-open signal means a channel is available, not that someone is speaking. Use individual microphone audio in Audio Triggers when the shot needs to follow speech.
How to set it up.
Requirements
- A DHD device with the Control API enabled and access to its logic states.
- A DHD API token and network access from VRA Core to the device.
- GPIO access in the VRA license and a connected video switcher for camera cuts.
Create a DHD Control API token in DHD WebApps user management with access to the required logic states.
In VRA studio GPIO settings, add DHD (Control API). Enter the device host, port and API token. Use the TLS setting to match the device connection.
Connect and browse the logic catalogue. Map the required microphone or console logics, using their labels to identify each function.
Change each mapped signal on the desk and verify it in VRA. Use those inputs as automation conditions for camera commands, graphics or macros.
For speaker-driven switching, connect the microphone audio to Audio Triggers separately and test the camera angles before going on air.
DHD questions
How does VRA connect to a DHD console? +
Through the DHD Control API, using the host and API token configured in VRA studio GPIO settings. Map the relevant logics and use their state changes in automations.
Can VRA discover the DHD console automatically? +
Enter its host address manually. Once connected, browse the logic catalogue to select the signals you need.
Does a fader-open signal identify who is speaking? +
No. It says the channel is open. Audio Triggers uses the individual microphone audio for speaker-driven shots; console logic can drive separate camera or graphics rules.
Does VRA carry the console audio over this connection? +
No. This connection carries control state. Microphone audio reaches Audio Manager through a separate supported audio interface or driver.
DHD audio
About DHD.
DHD consoles expose control information through the DHD Control API. VRA's DHD connection reads the logic signals you map and uses them as conditions for studio automation.
DHD visual radio from console logic
A console logic can trigger a camera command or a macro. VRA lets you browse the DHD logic catalogue and map the signals by identifier and label. The labels help identify the microphone or console function rather than guessing from a number.
For shots that follow speech, route individual microphone channels to Audio Triggers. The DHD logic connection and microphone audio serve different purposes: an open fader does not mean its presenter is talking. Camera Assist prepares supported PTZ angles, and the video switcher makes the cut.
What you can do with this connection
Automated camera switching for radio
Switch cameras from microphone activity and prepare PTZ shots off air.
More infoThe products behind it.
More integrations.
Ember+
Use Ember+ parameters as GPIO triggers for visual radio. VRA reads the console and router values you map to cut cameras, change graphics or run macros.
Lawo consoles
Use Lawo console signals for visual radio with VRA. Map Ember+ parameters to camera commands, graphics and macros while your desk handles the audio.
Blackmagic ATEM
Automate your Blackmagic ATEM for radio. VRA cuts it from the studio microphones and runs its keys and macros, and your team can take over at any time.
Check your studio setup with us.
Tell us your camera models, video switcher and radio automation. We will check the connections and show you the workflow that fits your station.