Every OBS command you can trigger from Helmo Live buttons, rundown elements, and Action Sequences.
Once OBS Studio is connected, you can control it from Helmo Control buttons, rundown elements, and Action Sequences.
Available actions
Scenes
| Action |
Description |
| Switch Scene |
Change the active scene in OBS. Select the target scene by name. |
| Set Scene Transition |
Change the active transition (for example Cut, Fade, Stinger) before a scene switch. |
Sources
| Action |
Description |
| Show Source |
Make a source visible in a scene. |
| Hide Source |
Hide a source in a scene. |
| Toggle Source |
Toggle a source's visibility on/off. |
Audio
| Action |
Description |
| Mute Source |
Mute a specific audio input. |
| Unmute Source |
Unmute a specific audio input. |
| Toggle Mute |
Toggle mute on/off for an audio input. |
| Set Volume |
Set the volume of an audio input (0–100%). |
| Set Audio Monitor Type |
Change monitoring mode: None, Monitor Only, or Monitor and Output. |
Filters
| Action |
Description |
| Enable Filter |
Activate a filter on a source (for example noise suppression, compressor, chroma key). |
| Disable Filter |
Deactivate a filter on a source. |
| Toggle Filter |
Toggle a filter's enabled state. |
| Set Filter Settings |
Modify a filter's parameters (for example threshold, ratio, key color). |
Recording
| Action |
Description |
| Start Recording |
Begin recording. |
| Stop Recording |
End recording. |
| Pause Recording |
Pause an active recording. |
| Resume Recording |
Resume a paused recording. |
Streaming
| Action |
Description |
| Start Streaming |
Begin the OBS live stream. |
| Stop Streaming |
End the live stream. |
Virtual Camera
| Action |
Description |
| Start Virtual Camera |
Start OBS Virtual Camera output. |
| Stop Virtual Camera |
Stop OBS Virtual Camera output. |
| Toggle Virtual Camera |
Toggle Virtual Camera on/off. |
Replay Buffer
| Action |
Description |
| Start Replay Buffer |
Start the replay buffer. |
| Stop Replay Buffer |
Stop the replay buffer. |
| Save Replay |
Save the current replay buffer to disk. |
Using OBS actions in Helmo Control
When creating a button in Control Builder:
- Select your OBS integration.
- Choose the action (for example, Switch Scene or Mute Source).
- Configure the parameters (for example, scene name or source name).
- The button will send the command to OBS when pressed.
Using OBS actions in Helmo Rundown
Add a LIVE element to a story and link it to your OBS integration. Set the action (for example, switch to the "Camera 2" scene, or mute "Mic 1"). When the element executes, OBS responds automatically.
Using OBS actions in Action Sequences
OBS actions can be chained in an Action Sequence alongside graphics IN/OUT commands, vMix transitions, and delays, all triggered by a single button press.
Tips
- Scene, source, and filter names must match exactly what's in OBS (case-sensitive).
- Audio source names correspond to the input name shown in OBS's audio mixer.
- If using middleware, make sure Helmo Middleware is running on the OBS machine.
- Filter actions require the filter to already exist on the source in OBS.