OSC Triggers

What is OSC?

Open Sound Control (OSC) is a flexible, network-based messaging protocol. Unlike timecode (which communicates a running time position), OSC sends discrete messages — commands like "go to cue 5" or "set intensity to 80%."

OSC messages use URL-style address patterns (e.g., /cue/fire) and can carry various data types — integers, floats, strings. They travel over UDP or TCP on configurable ports.

TimecodeLink OSC Output

TimecodeLink supports per-track OSC triggers — custom commands that fire when a mapped track becomes active on a layer. Each track in your playlist can have one or more OSC messages configured with user-defined addresses and values.

• Per-track triggers — fire when a specific track loads on a layer (e.g., send /resolume/layer1/clip3/connect with value 1.0)
• Layer filtering — optionally restrict triggers to specific layers (e.g., only fire on Layer A)
• Configurable addresses — map each trigger to any OSC address your show control software expects

These triggers complement continuous timecode output — use timecode for timeline-following and OSC for discrete actions like switching video clips or lighting scenes when specific tracks play.

Use Cases

• Scene switching — assign each track an OSC trigger that loads the matching lighting scene or video clip
• Media server control — trigger Resolume clips, BEYOND cues, or QLab actions when specific tracks play
• Multi-layer shows — use layer filtering to fire different triggers on Layer A vs. Layer B for A/B show mixing