This will extract the pixel width and height of the images that QLab sends to the patch. From there it is fed to the Swipe filter and also to the Image Dimensions Utility. The image is sent from QLab and arrives at the left-hand image port.
#Qlab 3 video tutorial Patch
The patch uses the Core Image Swipe Transition which is part of the built-in set of filters. Here is the Custom Quartz Composer Patch: (Right click on it to open it in a new window if you want to see it larger) QLab 3 and Quartz Composer – Custom Image Filters If you want to explore the Quartz Composition in detail read on….īefore examining the Custom Quartz Composer Patch, if you are new to Quartz composer you may want to read the Figure53 Wiki documentation first
#Qlab 3 video tutorial download
You can download an example workspace here If you want a wipe like the chapter graphic at the top of the page you are in Luck! You can download the complete workspace with placeholder images and the Custom Composition here This is all you need to know to make use of this custom Quartz Composition in your workspace. If the transition is a complete wipe then it will probably look better if the curves are set to linear as below: The time of the wipe is the duration of the fade. The direction of the wipe is controlled by the angle parameter which can be set in the video cues Video Effect Tab. In subsequent cues, I have delayed making the new cue visible by 0.1 seconds by bringing it at 0% opacity and snapping it up to 100% after a short delay, as shown in the screenshots above. This gives sufficient time for the filter to be applied. This is fairly common with video effects on cues and results from the delay in the video effect becoming active when the cue is fired (pre-loading makes no difference).
The video cue is in a group which immediately fades the value of the completion parameter of the video effect to 100 (%) as in the following screenshot.Ĭue 2 in the workspace flickers when the first cue with a transition effect loaded. Note that the Completion slider is at 0(%) We’ll look at how the custom Quartz Composer file is created in a moment, but here is a screenshot of a video cue with a Custom Composition named MicsWipe.qtz inserted as a Video Effect. Each video cue that needs a transition uses a custom Quartz Composer file inserted as a video effect on the cue.
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