Chapter 2 · OpenQ User Manual

Cues and timing

2.1Cue types

AudioPlays a sound file through the OpenQ mixer, with trims, loops, slices, EQ and routing.
VideoPlays a movie or still image on a stage; its soundtrack goes through the mixer.
TextShows text on a stage, such as titles, surtitles or cue lights for performers.
GroupHolds other cues and fires them in one of four ways.
WaitTakes a set time. Use it to space out an auto-follow chain.
MemoDoes nothing. Holds notes and marks places in the show.
FadeChanges another cue's level, opacity, geometry, video effects or object-audio positions over time.
StartFires another cue.
StopStops another cue.
PausePauses another cue.
Go ToMoves the playhead to another cue.
DevampLets a looping audio slice finish its pass and play on.
NetworkSends an OSC message to other gear, such as a lighting desk.
MicPlays a live audio input, such as a microphone, through the mixer.
CameraShows a live camera or capture card on a stage.
LightPlays a cue of the lighting design, or releases its sequences (see Lighting).

Every cue has a number (free text, like 4.2), a name, notes, a colour and an armed switch, all on the Basics tab. A disarmed cue is skipped by GO. Basics also sets the cue's pre-wait, continue mode and post-wait, and, for audio and video cues, the media file.

The Triggers tab holds the ways to fire a cue besides GO: a hotkey, a key that fires the cue directly whatever the playhead is on, and a timecode trigger.

2.2Timing and continues

Each cue has three times. The pre-wait runs between GO and the cue's action. The action is the cue itself: a sound playing, a fade running. The post-wait is counted from the start of the action and is used by auto-continue.

Continue modeWhat happens next
Do not continueNothing. The playhead moves to the next cue and waits for GO.
Auto-continue The next cue fires when this cue's post-wait has run out.
Auto-follow The next cue fires when this cue's action ends.

Chained cues start on exact sample boundaries, so a sequence keeps its timing however long it runs.

Groups

Group modeBehaviour
Start first child and enter groupFires the first cue inside the group and moves the playhead into it.
Start first child and go to next cueA playlist: the children play one after another while the playhead moves on past the group.
Start all children simultaneouslyFires everything inside at once, each with its own pre-wait.
Start random child and go to next cueFires one child picked at random.

Select cues and press Ctrl+G to group them. ← and → collapse and expand a group. Groups can hold other groups. Each level is inset with a guide line, so you can see where a group ends.

2.3Fades

A Fade cue changes another cue while it runs. Choose the target cue, the duration and the curve (linear, S-curve or logarithmic), then tick what to change:

  • Level in dB, for audio and for video soundtracks.
  • Opacity, for video and text.
  • Geometry: position, scale, rotation and crop. This starts from the target's own geometry, so only the values you change will move.
  • Video effects: the target's Video FX settings are copied into the fade when you tick it; change the values to fade to. An effect switched off here fades out, and effects the target doesn't have fade in from nothing. Take the target's effects copies them again after you change the target.
  • Objects, for targets in object audio mode: the positions and spread to move the objects to, edited on the same room view.

Light cues can't be the target of a Fade cue: lighting fades with its own Light cues (see Lighting).

Tick Stop target for a fade-out: the target stops when the fade ends. Pausing a fade freezes it, and resuming it continues with the time that was left.

2.4Timecode

OpenQ can run a cue list from incoming SMPTE timecode, for a show locked to a video, a band's click track or a lighting desk. It reads LTC (timecode as an audio signal) on an audio input or MTC (MIDI Time Code) on a MIDI input, at 24, 25, 29.97 drop-frame or 30 fps.

Setting up a cue list

Right-click the cue list's tab and choose Timecode…. Choose what the list follows (LTC or MTC), the audio input and channel or the MIDI input it arrives on, and the frame rate. The window shows the timecode coming in, and while that list is in front the standby card shows it too. Each cue list follows its own source, so one list can follow the band's LTC while another is run by hand.

Timecode triggers

Triggers tab: a hotkey card, and a timecode card with the trigger time, the list's timecode source and what it is receiving.
The Triggers tab of a cue that fires at 01:00:05:00.

On a cue's Triggers tab, tick Fire at and type the time (hh:mm:ss:ff). When the list's timecode runs past that time the cue fires, whatever the playhead is on, and its continues run as usual. The tab shows what the list follows and what it is receiving; Set up… opens the list's timecode settings.

Only timecode running forward fires cues. When the source jumps (a locate or a rewind) or stops, nothing fires, and triggering picks up again from the new position, so rehearsing a section by rolling back the source is safe.