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Nuke 5 Essential Training was created and produced by Steve Wright. We are honored to host his material in the lynda.com Online Training Library®.
Nuke 5 Essential Training is designed for digital artists already familiar with compositing visual effects using programs like Adobe After Effects or Shake. This course provides a solid foundation in operating Nuke, using the core functions of keying, motion tracking, and color correcting, as well as Nuke’s key strength, 3D compositing. Tour the Nuke user interface, its unique color management system, and overviews of HDR images, masking, keyframe animation, and 2D and 3D motion blur. Exercise files accompany the course.
If you need to slip the sync of a clip, you have to use the TimeOffset node. Select the Read node, come to the Time Tab, Shift+Click on TimeOffset, and we will set our Input Number 1. Hook that to TimeOffset, so we can bounce between the TimeOffset node and the original Read node. We will set the playhead back to Frame 1. I am going to close to FrameHold node. We don't need that anymore and we don't need to Read node, because it's set for the default.
All right. How does the TimeOffset work? It shifts the timing of a clip left or right in time, based on the offset here. Right now, the offset is zero, so there is no shift in the time, but if I wanted Frame 10 to start on this clip, I would say set it for -9. Now on Frame 1, I'm getting Frame 10. So, on Frame 1, I get Frame 10 and then all the subsequent frames come in after that.
Okay, back to our show. We will set the playhead back to Frame 1 and come up to the TimeOffset and I will set it for 9. Now I have shifted the clip to the right, if you will, 9 Frames. That means I don't get my first real Frame 1 until I get up to Frame 10. So, Frame 10 is now the real Frame 1 and Frame 11 starts incrementing through the Frame numbers, and all the frames before that are simply Held Frames.
The TimeOffset node also contains a Reverse Print feature. I will set the TimeOffset back to 0. If I turn on Reverse Print, go to Frame 1, it now plays the clip backwards. Okay, so use the TimeOffset node to do Reverse Prints. It's a one click function. In our next video, we'll take a look at how to do speed changes, using the Retime Node.
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