The software also accepts MIDI signals as triggers for its own cues. QLab allows MIDI signals to be sent as a cue to trigger other devices, such as digital audio consoles. It is useful to note that the speed of the computer processor and video card can affect the quality of video playback. The designer can also select on which video card or cards the video will play. Video files can be altered in real time in QLab, by integrating a Quartz Composer file. The video capability of the software in its most recent version allows a designer to add video files to their cue lists, allowing them to be time aligned with other cues, including audio files. Audio cues can also be placed into groups, so that multiple files can be triggered at one moment. Once the audio files are inserted into the cue list, the end-user can then manipulate it by looping it, changing the amplitude or volume, and adding fades in or out. QLab allows an end-user or designer to align audio files in a sequential order. The list of available cues in v5 is as follows: When triggered, a cue executes an operation. In QLab, a cue is a marker for an action to take place in the program. As of July, 2023, the most recent version of QLab is 5.2, with 4.7 still available for legacy systems. As with Version 3, a new edition of the QLab book was released called QLab 4: Projects in Video, Audio, and Lighting Control, by Jeromy Hopgood. This new function allowed QLab to function as a lighting console. As with previous versions, this one added many new user functions, including the addition of lighting cues. In 2016, Figure 53 released the newest major version of QLab, version 4.0. 2013 also saw the publication of the first book dedicated to the use of the software, QLab 3 Show Control: Projects for Live Performances & Installations, by Jeromy Hopgood (not affiliated with Figure 53, LLC). 2013 marked the release of QLab Version 3.0, with a wide range of new features, particularly in the realm of audio and video effects, Syphon video, the addition of microphone cues, and integration of OSC capabilities. In January 2009, Version 2.0 was released with a complete visual makeover of the interface and new control features. QLab 1.3.10 was the first version of the software and was released on May 25, 2007. It is developed by Figure 53, an American company based in Baltimore, Maryland. QLab is a cue-based, multimedia playback software package for macOS, intended for use in theatre and live entertainment. JSTOR ( February 2023) ( Learn how and when to remove this template message).Please improve this article by adding secondary or tertiary sources. Also worth searching the Qlab list, and contacting figure 53 (as from what I hear they are pretty good with their support.This article relies excessively on references to primary sources. In my experience Qlab is pretty good at dealing with most audio and video formats. In audacity, you would also be able to re-save to different audio formats, rather than relying on iTunes. I'm not sure what the answer to your problem is, but maybe opening the wav file in an audio editor (like audacity) will show you if there are any peaks/clipping/errors in the audio file. Something to do with having to decode the compressed audio as well as playing at the same time - too many things to go wrong. I can see how it would appear to fix your problems, but it may cause other issues (from my own personal experience). I personally wouldn't recommend using mp3 files at all for show purposes. The only time I've ever had Qlab crash (albeit version 1) was when playing back an mp3 file and adjusting the volume during a tech. I'll try re-encoding as MP3s and see if that eliminates the problem.
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