QLab 3.1.18 – Create media sequences for live shows.


QLab allows you to control audio, video, and MIDI from a single workspace. The basic version of QLab is free and provides a powerful audio playback environment. For advanced users, licenses are available to enhance the audio features, as well as to add video and MIDI functionality.

Designed to make you faster. We’ve worked hard to create an intuitive environment for crafting your designs. Need to trim the head and tail of that cue? Just bring up the waveform editor and drag your start and end points. Want your video flipped horizontally and centered on the second projector? Click, drag, done. Cut and paste cues to new workspaces or even external spreadsheets. Decide you didn’t like that adjustment? No problem, you can undo anything.

Rigorously engineered for first-class performance. QLab uses Apple’s low latency CoreAudio framework to provide playback control accurate to a thousandth of a second. QLab can also guarantee sample-accurate audio and video synchronization across all the cues in your workspace. And by taking advantage of Apple’s Quartz Composer technology, QLab allows you to completely customize video rendering in each cue, applying image filters and more.

QLab makes it simple to create rich multimedia designs for live performances and installations. From Broadway to the West End, in churches, museums, store fronts, concert halls, and theaters around the world, people use QLab to bring their audio and video to life.

Using building blocks called “cues”, you can create sophisticated designs in seconds. Getting started is as simple as dragging in a file and pressing “GO”. From there, add commands to fade volume, animate videos, or add audio and video effects.

Once you master the basics, become a power user with advanced features like scripting, video more…

What’s New

Version 3.1.18:

  • AppleScript hooks for the "patch" and "rate" properties of MIDI File cues.
  • OSC method for the "fixedWidth" property of a Titles cue.
  • Crash caused when audio hardware changed (e.g. when audio devices connected or disconnected).
  • Audio Effects can again be added to Video cues.
  • The active cue time scrubber now works again for cues that have an Audio Effect applied.
  • Scaling video output on OS 10.11 has been restored to the same behavior as on 10.10.
  • An issue where the last frame received from a Blackmagic input device was briefly visible when restarting a Camera cue.
  • Stability improvements for the video cue settings.
  • A Pro Video license now properly unlocks the ability to fade the playback rate of cues.
  • QLab will attempt to restore audio device buffer sizes to the last-set values any time the audio hardware list changes.
  • Loading a Start cue will no longer load its target cue if that cue is paused or already loaded.
  • A freeze resulting from particularly complex sets of nested group cues.


OS X 10.8 or later, 64-bit processor


  Download Now

You may also like...

Leave a Reply