Action Reference

Event Trigger tracks fire discrete OBS actions at specific times on the timeline. This page enumerates every available action (EOBSSequencerAction), grouped by its category (EOBSSequencerActionCategory).

For how these actions behave at section boundaries (Instant vs. State, exit/revert), see Track Families → Section Types and Advanced Topics → Exit Actions.

Supported Actions (40+)

A high-level summary of what each category covers:

Category	Actions
Recording	Start, Stop, Pause, Resume, Toggle Pause, Split File, Create Chapter
Streaming	Start, Stop, Toggle, Send Caption
Scenes	Switch Scene, Set Source Visibility
Audio	Mute, Unmute, Toggle Mute, Set Volume
Replay Buffer	Start, Stop, Toggle, Save
Virtual Camera	Start, Stop, Toggle
Transitions	Set Transition, Set Duration
Sources	Set Text, Set Browser URL, Set Image File, Set Media File, Set Color
Filters	Set Filter Enabled, Set Filter Setting
Media Inputs	Trigger Action (play/pause/stop/restart), Set Cursor Position
Studio Mode	Enable/Disable, Set Preview Scene, Trigger Transition
Screenshots	Save Screenshot

Action Tables by Category

The tables below list each EOBSSequencerAction enum value with its UI display name.

Recording

Enum Value	Display Name
`StartRecord`	Start Recording
`StopRecord`	Stop Recording
`PauseRecord`	Pause Recording
`ResumeRecord`	Resume Recording
`ToggleRecordPause`	Toggle Record Pause
`SplitRecordFile`	Split Record File
`CreateRecordChapter`	Create Record Chapter

Streaming

Enum Value	Display Name
`StartStream`	Start Streaming
`StopStream`	Stop Streaming
`ToggleStream`	Toggle Streaming
`SendStreamCaption`	Send Stream Caption

Scenes

Enum Value	Display Name
`SwitchScene`	Switch Scene
`SetSceneItemEnabled`	Set Source Visibility

Scene Items

Enum Value	Display Name
`SetSceneItemPosition`	Set Scene Item Position
`SetSceneItemScale`	Set Scene Item Scale
`SetSceneItemRotation`	Set Scene Item Rotation
`SetSceneItemCrop`	Set Scene Item Crop

Audio

Enum Value	Display Name
`MuteInput`	Mute Input
`UnmuteInput`	Unmute Input
`ToggleInputMute`	Toggle Mute
`SetVolume`	Set Volume

Replay Buffer

Enum Value	Display Name
`StartReplayBuffer`	Start Replay Buffer
`StopReplayBuffer`	Stop Replay Buffer
`ToggleReplayBuffer`	Toggle Replay Buffer
`SaveReplayBuffer`	Save Replay Buffer

Virtual Camera

Enum Value	Display Name
`StartVirtualCam`	Start Virtual Camera
`StopVirtualCam`	Stop Virtual Camera
`ToggleVirtualCam`	Toggle Virtual Camera

Transitions

Enum Value	Display Name
`SetCurrentTransition`	Set Transition
`SetTransitionDuration`	Set Transition Duration

Sources

Enum Value	Display Name
`SetTextSourceText`	Set Text Source Text
`SetBrowserSourceUrl`	Set Browser Source URL
`SetImageSourceFile`	Set Image Source File
`SetMediaSourceFile`	Set Media Source File
`SetColorSourceColor`	Set Color Source Color

Filters

Enum Value	Display Name
`SetSourceFilterEnabled`	Set Filter Enabled
`SetSourceFilterSetting`	Set Filter Setting

Media Inputs

Enum Value	Display Name
`TriggerMediaInputAction`	Media Input Action
`SetMediaInputCursor`	Set Media Cursor

The Media Input Action accepts a verb of play, pause, stop, or restart.

Studio Mode

Enum Value	Display Name
`SetStudioModeEnabled`	Set Studio Mode
`SetCurrentPreviewScene`	Set Preview Scene
`TriggerStudioModeTransition`	Trigger Studio Transition

Screenshots

Enum Value	Display Name
`SaveSourceScreenshot`	Save Screenshot

All OBS tracks are organized under a single “OBS” submenu:

+Track → OBS ▶
├── Event Trigger              Fire discrete OBS actions at specific times
├── Media Sync                 Synchronize OBS media with Sequencer timeline
├── Continuous State ▶
│   ├── Audio ▶
│   │   ├── Mute State
│   │   └── Monitor Type State
│   ├── Filters ▶
│   │   └── Filter Enabled State
│   ├── Scene ▶
│   │   ├── Blend Mode State
│   │   ├── Lock State
│   │   └── Visibility State
│   ├── Studio Mode ▶
│   │   └── Studio Mode State
│   └── Transitions ▶
│       └── Transition State
└── Keyframeable ▶
    ├── Audio ▶
    │   ├── Balance
    │   └── Volume
    ├── Filters ▶
    │   └── Filter Setting
    ├── Media ▶
    │   └── Media Cursor
    ├── Scene ▶
    │   └── Transform
    ├── Sources ▶
    │   └── Color Source
    └── Transitions ▶
        └── Transition Duration

Querying Actions in C++

Action metadata (category, trigger type, required parameters, UI labels) is available through the registry:

#include "Sequencer/InhyeongOBSSequencerTypes.h"

// Look up metadata for a single action
const FOBSSequencerActionMetadata* Meta = FOBSSequencerActionRegistry::GetMetadata(EOBSSequencerAction::SwitchScene);
if (Meta && Meta->bRequiresTargetName)
{
    // This action needs a target name (scene name)
}

// Get all actions in a category
TArray<EOBSSequencerAction> RecordingActions =
    FOBSSequencerActionRegistry::GetActionsForCategory(EOBSSequencerActionCategory::Recording);

See Advanced Topics → C++ Access for more on the runtime classes.

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