Actions and triggers

An action is additional activity inside a cue. One cue can play video, fade its audio, change another cue's opacity, and finally send a stop command.

Three action types

Command

Sends a transport command: Play, Pause, or Stop. Target selects the cue that receives the command.

Set

Immediately sets a parameter, such as opacity 0.5 or volume 1.0.

Transition

Changes a parameter over time. It can define a starting value, destination, duration, delay, and curve.

Target

An action target can be:

• This cue — an empty target means the cue that owns the action;
• another compatible cue in the same cue list.

Media cues often control their own opacity and audio. Transition cues are commonly used to control other cues.

Triggers

Trigger	Fires when
On Cue Start	The cue lifecycle begins
On Play	The media player actually starts
On Cue Stop	The cue receives a soft STOP
On Finished	Cue activity and scheduled actions finish
At Time	The cue clock reaches a specified millisecond
OSC	A matching OSC address arrives
MIDI	A matching MIDI CC arrives
Manual	The operator presses FIRE on the action card

OSC, MIDI, and Manual triggers are armed only while their owning cue is playing. They may fire repeatedly during the same run.

Example: fade a video in and out

1. Transition · Opacity 0 → 1 · 1000 ms · On Play
2. Transition · Opacity current → 0 · 1000 ms · On Cue Stop

The first action reveals the video after playback starts. The second gives STOP a one-second finish. If From is omitted, the transition starts from the real current value.

Example: stop after a fade

1. Transition · target Video A · Opacity → 0 · 2000 ms · On Cue Start
2. Transition · target Video A · Volume → 0 · 2000 ms · On Cue Start
3. Command · target Video A · Stop · On Finished

Conflicts

A new transition on the same parameter replaces the previous transition. This replace policy makes retriggering predictable: the new fade starts from the current value and moves towards its new destination.

See the exact fields in the action reference.