It can make track positioning more difficult, however. We are going to do the same thing: I am going to use my last good frame, my next frame which has a problem in it, my next good frame, and I will use my last problem frame. • custom - use the every n frames and when error <> controls to specify grab behavior. In this series of NUKE tutorials, we will take a look at every property of the Transform nodes, which allow us to move, rotate, scale, and do much more to our pixel data. I am just going to start off and introduce you to it. • stabilize 1pt - similar to stabilize, but designed for use with a single track. ... Navigate around the node tree in the direction specified. If we scrub on one frame, you can see the toe is now completely outside the search window. Now I can see it has given me a good track for those bad frames. If we go back a few frames and move the Tracker to create a new keyframe, you can see a new window appears. I will select all four of them and hit Z to track backwards. NUKE 7.0 - Keyframe Tracking Around Occlusions from Foundry on Vimeo. Now, with this version, there is a new zoom window right here. For example, when we created this track, we created a key at frame 196. This one is tricky because the man’s arm covers up the sticker. Sets the error level at which Tracker stops searching for features. I can still position this box as best as I can to make it in the same relative position. If you can't find what you're looking for or you have a workflow question, please try Foundry Support. You are now leaving and will be automatically redirected to LinkedIn Learning to access your learning content. I think that will be pretty good. So, I will go full screen and we will work in this mode. So, moving down now I have a keyframe quite close to the other ones, so just go to the top and remove the keyframe. Nuke can frequently become unresponsive for a few seconds or be slow to work with when Tracker nodes are present in a script. As we can see, we instantly have a much better track. It takes in account the keyframes that are already set and it takes into account the updated position, and then re-calculates a path in that area. This means that a red color value may mean one track is proceeding nicely, but in another track it means that it has failed. You can click on those patches to compare them. So, I’m going to do just that and skip on another 25 frames. Looking at the traffic lights, we can see the issues caused by motion blur, and actually even though it has gone red it’s a good track. If you are familiar with the old Tracker, you can see all the track controls have been moved up to the toolbar. Lastly, we'll create a tracked camera from the process which we can use for projections. The color of each point on the motion path indicates the error value generated by the node and the error represents the confidence with which the node has identified the pattern for that frame, with the patterns established by the keyframes. Displays the skew applied to the Transform widget on the y axis for the current track. When enabled, Tracker re-grabs a pattern at the current position each time tracking is stopped. In short - track the marker and match-move a roto (Paint) to it. Now let’s have a look at another tracking issue. For example, I can motion track this sticker on this post and replace it with something else. How do we reduce the amount of lens distortion in our footage? the output of NoOp node was not connected to nothing That was okay till Nuke 9.08, in Nuke 9.08 as turned out to be - if node is not connected to the main tree of the gizmo it is not evaluated (at least for me the solution was just to connect the bloody node to the tree with a merge node … Mar 16, 2015 - This is one of many ways to remove tracker markers in Nuke, using Paint. Now this can be quite difficult at times because there are a lot of maths and expressions involved, and you may need more than the four tracks then you are offered in Nuke 6.3. This will track the keys either side of the keyframe you are on. • Impulse - remapped pixels carry their original values. The buttons with the vertical bar and the arrows allow us to track backwards and forwards one frame at a time, and very importantly, the stop button allows us to cancel tracking at any point. I am just going to do translate for now, but if you want to, you can turn on rotate and scale also. In this case, I want to track all of them, so I will press go. The tracking information can be later used for retouching, adding scars, relighting, face replacement, aging and de-aging, etc. It will give us the best result, as it basically locks the filter to keys. You can see the keyframe track proceeding forwards in the shot, and although it looks like it’s doing the same thing as the auto-track we showed earlier, it is actually trying to match the current pattern window against both search windows of the keyframes, but also keeping the track position of the two keyframes locked. The frequency of a node cannot be changed once placed on a creature. We can scrub quickly across the Timeline by dragging this vertical yellow bar. So, good frame, problem frame, problem frame, and good frame. And also, we have an Export panel that allows us to create CornerPins and Transforms easily from the Tracker. I will expand the interface because we have some other parameters that have been hidden because of the size of the interface. Easily collaborate with others, whether you’re sitting side by side or across the globe. This is a nice way to think about keyframe tracking: every time you move a track, you create a new keyframe. The key to solving this is to make sure the search window is large enough so that it can contain the toe within the next frame. This means the track has no chance of following it into the next frame, so let’s try that by tracking forwards one frame. I will also turn on the center viewer button. Hello, Dan Ring here, and in this tutorial I’m going to show you how to get started with Nuke’s new Tracker. It’s done a pretty good job all the way through. We head down to a bit further down this shot, create another keyframe, again to help the Tracker. To clear the track animation path, we can then use this clear all button up here. I highly suggest rotoing objects before the track. The perfect fit for … It will track the entire shot. NUKE 7.0 - Combined trackers from Foundry on Vimeo. Same instructors. Now, with the old Tracker I would have been able to adjust the search window and that would have worked for the whole shot, but because this is keyframe tracking, the search area is also keyframed and it only adjusts it on the frame I am on. • Transform (stabilize) - creates an expression linked Transform node with control presets to stabilize the clip. To do this, let’s go back to our original starting frame and clear all of this track data. • amber - a reasonable match for the grabbed pattern. These correspond to the yellow frames around here and the animation path. However you can only select tracks from 1 frame at a time and you can only export a maximum of 100 tracks in one single node. This option slows the tracking process and can reduce the accuracy of tracks, so only enable this control if there are known changes in brightness. Select the filtering algorithm to use when remapping pixels from their original positions to new positions. I can also tell on the traffic light system (show error on track), and this shows me green for low errors, red for high errors, and yellow for in between errors. Lastly I deal with the third guy, remember this is more of a problematic track and it’s less accurate. It can mean there was a good track, but it found the pattern to be different but still got the track correct. Now, I can go to a different keyframe, say frame 195, and re-position the box. I will create a keyframe so the second pattern is clear, go forward a frame, and create one more keyframe. That’s where you set keyframes over time and let the program analyze between those. Click to set the current frame as the reference or identity frame. Exercise Files When the planar tracking data is exported with the Tracker option, it creates a…new Tracker node with the planar track data baked in.…T The four corners of the Ppanar surface become the four tracker points, which you…can then use to match, move, or stabilize images. Explore's library of categories, topics, software and learning paths. Auto Write Node by Lars Wemmje. Displays the skew applied to the Transform widget on the x axis for the current track. Bring up the Tracker in the same way as we did before, and as you can see already, there are a number of differences. • match-move 1pt - similar to match-move, but designed for use with a single track. Now we have this new traffic light system (show error on track), which would normally let us see where the tracks have any problems or not, but when they overlap like this they are not much use. If we go out here, and make the search window massive like this, we can try to re-track now. That concludes this tutorial on the basics of the new Tracker in Nuke, and also an introduction into how pattern tracking works. Back in Nuke 7.0, I bring up the new Tracker. • Translate/Scale - expect pattern translation and scaling. We can do this by either dragging and selecting them all in the Viewer, or pressing Ctrl/Cmd+A or pressing the select all button here. When enabled, changes to tracks instantly update the transform. One important task of compositing is motion tracking. Foundry has released Nuke 12.1, the latest version of node-based compositing software, revamping the Shuffle node, and making it possible to use companion tool HieroPlayer as a flipbook viewer.. NukeX, the extended edition of the software, gets a new Blink-based particle node, more intuitive lens distortion workflow, and updates to the Grid Warp Tracker and Cara VR tools. Also if we select multiple tracks, we get to see the average, the stabilized average of both of these tracks. You will need about 10 hours … Once I had that, it was only a small tweak to have it to also create a Nuke “Tracker” node (credit to Mat Power for doing a lot of this side of the coding). Once tracking is complete, you can drag-and-drop the translate information to link other nodes, such as the Stabilize node. For example, the buttons with the R in them allow us to specify frame ranges. Jun 23, 2016 - This is one of many ways to remove tracker markers in Nuke, using Paint. Nuke 12.1: new Shuffle node, plus Hiero as a flipbook viewer Nuke 12.1 adds a new Shuffle2 node, intended to replace the old Shuffle and Shuffle Copy nodes for selectively remapping or replacing colour channels within footage. Anyway, let’s see how it gets on with the search area that it has. The second way to create a track is to use the add track button up here, which when toggled on, allows us to quickly create tracks anywhere we click the mouse. … Let’s say that I also rushed the placement on my last keyframe, it’s going to recalculate automatically because I moved that box for that frame. Let’s move it over to our first peak. This is one of many ways to remove tracker markers in Nuke, using Paint. Useful Nukepedia Tools #12 Channel Hotbox by Falk Hofmann. You need to check to see if the error is actually causing you an issue. When pattern grab behavior is set to update if below tolerance or custom, sets the error level below which Tracker automatically re-grabs a pattern. Imagineer Systems posts a webinar replay that covered the basics and workflow for using Mocha Pro’s planar tracker and roto tools with The Foundry’s Nuke.. the many ways that mocha Pro is the ideal assist utility for NUKE VFX pipelines. Now the problem frames in the middle would throw the tracker off normally, so we would track with an offset at this point. So yellow, to orange, to red indicates a rising error value. If I go into Settings, there is a nice new feature called adjust for luminance changes, so turn that on and it will start working through the luminance changes for the shot. A: The author added a "Nuke 9 New Features" chapter, which covers what's new in Nuke 9. Where the other two trackers stopped, you can see at the bottom of the screen, these two parts of the Roto have also stopped. And sure enough, as the bar comes through the shot, the track bombs out completely. This places a track in the center of the Viewer. What we want to do is get a better idea of how the track is doing over time, where it’s drifting, and by how much. I need to be a bit more accurate with my keyframes, as I want to place CG there. Collaboration, speed and efficiency . One of the advantages of this Tracker is that it lets us have as many tracks as we like. Let’s pretend that we want to track the toe of this girl, so lets zoom in and create a track. Rather, they indicate that the pattern has changed considerably since the previous pattern grab. Note:  The transform control must be set to none when calculating tracks. It’s looking pretty good, however, at the very end, because of the overlap with the arm, it gets confused with 2 frames. Mocha Pro also exports corner pin, transform, roto masks and 3D camera tracking to Nuke. Nuke Studio® comes complete with a multi-track editorial timeline that lets you playback, review and edit multi-layered sequences of video, CG and audio tracks. You can go to this menu and click the style of data you want to export. I will zoom in here so I can see this better, and position that until it lines up right there in the center. The first is by using this add track button. If you have seen Dan’s tutorials on the Tracker, then you will have a good idea of the new interface. Set this control to 0 to always display selected tracks with keyframes. Sets when filtering is applied to the zoom window: Note:  The filter applied is the same as that selected on the Transform tab, and can produce a more visually stable track. In this post I’ve selected some parts on camera tracking from the Nuke User Guide manual and added some pictures and bolded some parts in order to make it easier to remember how to work with this node. Now, this is not the only way to see how accurate the path is; there is another new button for Nuke 7, which is right here. Nuke studio is the no 1 industrial standard compositing software in visual effects.Nuke has been used in many Hollywood movies line Ironman to the 1917. This movie is locked and only viewable to logged-in members. You can see now that those points of the roto have been linked. So I am back in Nuke 6.3 for the moment, and I have a very old piece of footage that I would like to stabilize. Offers more control over 3 different frequencies of camera shake, and also shakes the centre-point, giving more detail to sub-frame motionblur. What I need to do is to be able to turn off tracks 1 and 2 as the greenscreen leaves the bottom of the frame. You are imparting new information into the system, which gives you a better overall track. Let’s just track to the end of this shot, and if we look in the zoom window, we can see that’s doing a pretty good job. Testing a Linux workstation right now, so I threw the plate over there and guess what. You can choose from blobs or corners. You can turn off the “calculating preview” popup if you wish. You will see that when track 1 and 2 hit the bottom of the screen, they will no longer continue tracking, but tracks 3 and 4 will. Mocha Pro also exports corner pin, transform, roto masks and 3D camera tracking to Nuke. Watch this video on our Vimeo channel . For example, let’s do this track again and I will cancel it mid way. I will use the Shift key to start a track. I start creating my shape, and then I select those points, right-click, and select Link to > Tracker 1. Smooths the translation by averaging this many frames together. The idea behind keyframe tracking is to lay down keyframes and let the Tracker figure out what happens in between them. More frames will take longer but often give better results because we get more information. GeoTracker makes tracking tasks much easier, so what usually have been done by a team of motion tracking specialists can be done by one of them and with less time. The Esc key stops the tracking and C will track forward a frame at a time, and back to the V. Working this way makes it very, very fast to set up tracks to do your tracking. Auto Write Node by Lars Wemmje. Once I had that, it was only a small tweak to have it to also create a Nuke “Tracker” node (credit to Mat Power for doing a lot of this side of the coding).