Join Steve Wright for an in-depth discussion in this video Exploring autotracking upgrades, part of Nuke 7 New Features.
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The Tracker node has been substantially rewritten with many very cool new features added. At last we now have unlimited trackers and they're managed in an all-new tracks list. Keyframe tracking has been added, plus a one click track averaging feature, the snap to markers feature makes it much easier to plant accurate keyframes, and the new export options include the automatic creation of a corner pin node. What we used to just call tracking is now called auto tracking to differentiate it from the keyframe tracking.
So let's take a look at just auto tracking first. Our Exercise File here is Lab Guy, find that folder here and load this clip if we want to play along. I am going to use the tab key, search function to go find a Tracker node, and hook it into my Read node and rezoom the viewer. So two immediate differences are, the Property panel here no longer has the options and buttons that we've seen before, they've all been moved up here and there's a lot more of them.
There's been some important new features and functions added. We'll be taking to look at those in just a bit. So, first up there are three ways to add new trackers to your clip. Over here is the Add Track button, we turn that on, notice that it turns red, and all I have to do is go click, click, click, click, and I have added new trackers, I'll turn that off. You can also just use the Shift key, just hold down the Shift key and click, click, click, click. Okay, also there is the Add Track button very much like the old one.
When I click on Add Track, it drops a new tracker in the old position, and then you have to pick it up, and move it to where you want it. A big new feature are these zoom windows here, this really helps with the precise positioning of things. The little window here shows you your previous setting. So watch this. I'll move the big window over to here and watch the little window jump to match it, then I'll move the big window down to there, and the little window jumps to match it. So, it gives you a kind of a history, of where your cursor used to be, put that back.
Now let's take a look at this Track list, every tracker you create is added in to this list, and we get a little more window, so I can show you whole thing, here is your familiar Enable button, and there is of course the name of your track, this is the track X and Y data that you've seen all along. But this is new. Here's your Offset X and Y, in case you do offset tracking, these are the familiar TRS buttons for each tracker and another new thing the Error column, selecting tracks is a little different now.
So, for example, over here is track 9 sitting all alone, if I select the track 9 track, it lights up and adds the reference box and the search box. If I want to select multiple, I hold down the Command or Ctrl key. I'll select this track here and then do a Shift+Click down there, and I get a whole block of them. Okay, I am going to select all and delete tracks. Next, let's take a look at the very important new average tracks feature.
Let me show you how that works. Make sure, our play head is on frame one. I'll come up here to this corner and let's say, I would like to average four trackers around this area here. So, I'll use the Shift button, Shift+ Click, add tracker Shift+Click, add another, Shift+Click and Shift+Click. I now have four trackers to track them all, we will zoom out a little bit, to track them all, I'll do a Shift+Click to pick the whole list, then we will track forward, our track forward, and reverse button are all up here now. Same as before, just in a little different location.
Okay, so we're tracking all four points over the entire length of the shot. Okay we're all done now. I'll put the playhead back to frame 1. Now if I deselect the tracks, notice they all turn a lovely color. So each one of the tracks is now a different color. If I want to do an average of these four tracks, it could not be easier, I'll just click the top one, Shift+Click on the bottom one to select all the tracks I want to average and I'll click on average tracks. After months of computation, Nuke comes up with a brand-new track for me, that's the average of those four.
We now have a new track here named Average track 1 and of course, we can rename these anything we want. And then we still have our other four tracks. Let's put in here. Here is my new Average track 1, I can keep the old tracks or I could select them and make them all go away, so that I just keep my Average track. It's not a link, it's actually baked in, so I can lose the originals. All right! Let's rehome the Viewer and take a look at another interesting new feature called the snap to markers feather.
I am going to delete this guy here, and go to the Settings tab and down here snap to markers. By default, it's off and you have a choice of blobs or corners and these are the kinds of features, the snap to future it's going to look for. Let's turn that on. I'll do a Shift+Click to add a new tracker, Shift+Back to the Tracker tab, so I can see the onscreen reference and search boxes, see this little green circle, watch what happens, when I move the tracker around the screen.
The green circle jumps to different landmarks, it has a love of corners, okay. And the other cool thing is once it's snapped to the corner, if you will let go, the tracker will jump to that position and you can see right here it's magnificently lined up with the center of the corners. These new auto tracking features will really help with your 2D point tracking. Now let's take a look at the all-new keyframe tracking.
This course was created and produced by Steve Wright. We are honored to host this content in our library.
- Working with stereo in the RotoPaint node
- Keyframe tracking
- Exploring Primatte Keyer
- Setting up and using Motion Blur
- Adding depth of field with ZDefocus
- Animating warps and morphs
- Measuring and viewing deep data
- Retiming a shot with optical flow
- Tracking and point generation in the PointCloudGenerator
- Creating separate cameras and points with the Camera Tracker
- Setting up displacements
- Modeling more complex geometry with the ModelBuilder node
- Casting semitransparent shadows
- Relighting renders