Datasheet

28 chapter 1 ■ Setting Up a Composite
Region-Of-Interest, when toggled on, creates a region box in the viewer. Updates
occur only within the region box. You can alter the size of the box by LMB+dragging
the box edges. To reposition the box, LMB+drag the center crosshair.
Pause, when toggled on, prevents the viewer from updating, even when the node net-
work is updated or parameter values are changed.
Update, when clicked, forces an update, even if the Pause button is toggled on.
Cliptest, when toggled on, applies zebra stripes to any part of the output that exceeds
an RGB value of 1, 1, 1.
Playing the Timeline and Creating a Flipbook
There are two ways to test a composite over time within Nuke: play back the timeline or
create a Flipbook.
To play back the timeline, use the time controls in the Viewer pane. As the timeline is
played, each frame is composited and stored in cache. Once all the frames are composited,
the timeline is able to achieve real-time playback speeds. The playback speed is indicated
by the Desired Playback Rate cell, which is to the immediate right of the playback controls.
The target frame rate is determined by the Fps parameter of the Project Settings properties
panel. However, you can change the value in the Desired Playback Rate cell to temporarily
achieve a different playback rate.
To create a Flipbook, select the node whose output you wish to see and choose
Render
→ Flipbook Selected from the menu bar. In the Frames To Flipbook dialog box,
enter a frame range. Each frame of the composite is written to a disk cache as an RGB file
(with an
.rgb extension). Once the render is complete, the IRIDAS FrameCycler window
opens. FrameCycler is an external program and thus has its own unique interface (see
Figure 1.29).
Figure 1.29 FrameCycler window
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