Do I need a model to perform tracking?

Yes, you need a model of an object or a scene to perform tracking.

Should the model fit the scene perfectly?

No, it shouldn’t. But the better model you have the better results you obtain from every key frame.

How detailed should the model be?

The model should fit the scene. Minor details aren’t very important and could have negative impact on tracking performance

Do I need a motion capture rig to make it work?

No, GeoTracker can match the model movement on already filmed shots.

What if the object in the scene has semi-transparent or reflective parts?

You may use 3D surface mask to exclude semi-transparent or reflective parts from tracking process.

What if the object I’m tracking is partially overlapped?

If the overlapped area is relatively small GeoTracker will handle it. Otherwise you may use a 2D mask to exclude overlapping from tracking process.

What’s the output of GeoTracker node?

GeoTracker’s output is the transformed input geometry.

Do I need GeoTracker installed on every machine in my pipeline?

No. As soon as you’ve done tracking you may export the results as a usual Nuke node (TransformGeo or Camera node) to pass them to other machines.

How to export tracking results to use inside Nuke?

You can export the results as a TransformGeo or a Camera node on the Results tab.

How to export tracking results to other software?

You can use WriteGeo node to export geometry with its transformations.

Does GeoTracker work in Nuke Indie?

Yes! Starting from the 12.2v4 version.



Is there a quick tutorial for FaceBuilder?

Yes, it's waiting for you in our Medium blog

Are there any examples to play with?

Sure! They're on our examples page.

Can I use FaceBuilder with a video as a source?

Yes, you can build a model using a video instead of a sequence of photos. Actually, there is no difference between the two ways.

What actually happens when I change a pin’s position?

Using all the pins from all the keyframes FaceBuilder recalculates the resulting model's shape and model's position in each keyframe.

Can I use FaceBuilder with a set of photos with different resolutions?

Unfortunately, no. All the photos should have the same resolution. But we might change it in future releases.

Can I use FaceBuilder with images taken with different Focal Length?

Unfortunately, it's not possible now.

I have a license for FaceBuilder in Nuke, would I need another license for another host?

No, licenses for our plugins are host-independent.

I have a license for FaceTracker, do I need a license for FaceBuilder?

Yes, our plugins licenses are independent.

Can I use my own custom head model?

No, it's not possible now, but we have it in our plans.

Can I save (export) the model as a file?

Yes, using Nuke's built-in WriteGeo node.



Where can I find a tutorial?

It's waiting for you here.

Do you have some examples to play with?

Sure! They're on the examples page.

What model should I use as an input for FaceTracker?

We assume that you're going to use FaceTracker along with FaceBuilder, using FaceBuilder's output as an input model for FaceTracker. But you can easily use FaceTracker without FaceBuilder, check the question about a custom model below to find out how.

Can I use FaceTracker without FaceBuilder?

Yes, the workaround is described in the Custom Model question below. You don't need a license for FaceBuilder to export a default model.

Can I use a custom head model?

You can export the default model of FaceBuilder, and then modify the shape keeping vertices count and order. Then you can import it back, and connect to FaceTracker. It uses vertices to understand what is what in the model (e.g. nose, lips, eyes, etc). So, you can manually move vertices if FaceBuilder's result doesn't suit you, remove or add faces, change normals and UVs, wrap a scanned model with our default model, etc.

Can I use custom blendshapes?

Not at the moment, but we are considering adding support for custom blendshapes in future.

Do I need to start tracking from a neutral face expression?

Not really, but it'd be easier if you can find a neutral expression to start from.

If I abort the tracking, the results would be lost?

No, the tracking information is saved frame by frame, so you can abort tracking at any moment keeping the tracking information you have already got intact.

I have a license for FaceBuilder, do I need a license for FaceTracker?

Yes, the licenses for FaceBuilder and FaceTracker are independent. You need both to work with both plugins.

How to export an animated model to a file?

You can use Nuke's built-in WriteGeo node with ABC format. After pressing "Execute" button specify the frames you want to export.

Can I use FaceTracker in Nuke Indie?

Yes! You'd only need to install Nuke 12.2v4 or newer.



How do I start using PinTool if I can't see an object through a camera?

Press ‘center geo’ button to position the object in front of the camera.

How do I remove a pin?

Click with right mouse button on a pin to remove it.

What camera is used when there is no camera connected to ‘cam’ input?

Nuke default camera is used in that case. The same as in ScanlineRender. Is has aperture of 1 and focal length of 1.

I’ve estimated focal length with no camera connected and gotten suspiciously small number. Is that OK?

As the default camera with aperture of 1 is used when ‘cam’ input is not connected, small (< 1) focal length values are absolutely normal.

Does PinTool work in Nuke Indie?

Sure! You will need Nuke 12.2v4 or newer.



Why doesn’t ReadRiggedGeo load some bones/nodes/e.t.c from my file?

ReadRiggedGeo’s goal is to introduce deformable geometry to Nuke so that the geometry can be deformed and animated. ReadRiggedGeo doesn’t imply making a fully functional 3D Creation Software from Nuke.

Can I export rigged geometry from Nuke?

Currently it is not possible to export rigged geometry otherwise than as a sequence of rigid geometries or as an FBX with animated points.

What formats does ReadRiggedGeo support?

ReadRiggedGeo supports a lot of geometry formats. FBX and Collada formats may be used to load rigged geometry when many others may be loaded with ReadRiggedGeo when ReadGeo in not enough. For example: Autodesk (.fbx), Collada (.dae), Blender 3D (.blend), 3ds Max 3DS (.3ds), Wavefront Object (.obj), Stanford Polygon Library (.ply), and some others...

Can I use ReadRiggedGeo in Nuke Indie?

Yes! You will need Nuke 12.2v4 or newer.

License Server


Is the Internet connection required?

No. You can activate licenses manually from another computer with internet access using Manual Installation page. The Hardware ID can be found if you launch the License Server with the "run" command.

Where exactly License Server is trying to connect and why?

Host:, port: 443. It happens when a license is being installed and when a running instance of License Server is checking installed licenses from time to time.

Can I use environment variables to automatically setup license settings in plugins?

Definitely! When our plugins are loaded they check KEENTOOLS_LICENSE_SERVER variable, and if it contains a string with a host address and/or a port number, they try to connect using it and get a license. Here are some examples of what this variable could contain: localhost (the default port will be used),, server.local:4242,

My licenses get skipped, not loaded

This may happen with licenses of a wrong type. Only floating licenses work with License Server.

Users can't connect to the license server

Check there are no firewalls between the user's machine and the machine with the license server. The default port used by License Server is 7096.

I can't access a status page or API on port 8080

Please, check there are no other processes using that port on the machine where License Server is being run.

How to install many licenses at once?

You can redirect stdout to the License Server executable, i.e.
"cat licenses.txt | ./KeenToolsLicenseServer install"
"echo 'license1 license2 license3 ...' | ./KeenToolsLicenseServer install"

I've installed a license, but users can't see/use it

The licenses are being read during the startup, so you need to restart the existing License Server process to make newly installed licenses available for users.

Which OS is better for running License Server?

There's no difference if you know how to use the OS of your choice as a server.

Does it work with Virtual Machines?


What is the license lock timeout?

License is locked for up to two minutes after it was used last time.

I'm losing a license on my machine when other machine starts using it

In that case you either need to coordinate your work between two or more machines, or just get more licenses.

How to create a Windows service?

We recommend using Non-Sucking Service Manager, it's free and easy to use.

I get strange errors on Windows (dlls are missing or application is unable to start)

Please try to install Microsoft Visual C++ 2010 Redistributable Package.

When I try to install licenses I see "handshake: certificate verify failed" error

This may happen when root certificates on your OS are obsolete.
To update them on old versions of Windows please follow instructions on this page. Usually launching this command is enough: "CertUtil –generateSSTFromWU Rootstore.sst".
Alternatively, you can activate licenses manually and then place activated license files in the license storage folder of license server.



What is the simplest way to install KeenTools into Nuke?

The simplest way to install KeenTools for Nuke is to run the installer.

Does it work in Nuke Indie?

Yes, but only in Nuke 12.2v4 and newer.

What exactly does the installer do?

The installer copies KeenTools files to Nuke plugins directory:
• OSX: /Library/Application Support/NUKE/x.x/plugins/
• Linux: /usr/local/NUKE/x.x/plugins/
• Windows: C:\Program Files\Common Files\NUKE\x.x\plugins\
where x.x is Nuke version (10.5 for example).

I’ve installed KeenTools but I can’t see it in Nuke. What should I do?

You should check you’ve installed the correct KeenTools bundle (i. e. OS and Nuke versions match yours). If versions match and you can’t see KeenTools in Nuke try to perform manual installation.

How to uninstall KeenTools?

Remove KeenTools folder from Nuke plugins directory to uninstall KeenTools.
If you installed KeenTools using our installer, then the files would be placed in these folders:
• OSX: /Library/Application Support/NUKE/x.x/plugins/
• Linux: /usr/local/NUKE/x.x/plugins/
• Windows: C:\Program Files\Common Files\NUKE\x.x\plugins\

Is it possible to use KeenTools with NUKE Non-commercial?

No, Non-commercial version doesn’t support third-party plug-ins.

What is ‘manual’ directory for?

‘manual’ directory is only for performing manual installation. It isn’t required if you’re using the installer (i. e. you can only share the installer if it suits your needs).

How can I perform manual installation

• copy KeenTools folder from ‘manual’ directory to any place you want
• add the path to KeenTools folder to Nuke path by adding nuke.pluginAddPath('PATH_TO_KEENTOOLS') to file.

How can I perform manual installation working for multiple Nuke versions and operating systems?

• copy KeenTools folders from ‘manual’ directories for every Nuke version and operating system you want to any place you want;
• add the path to all that folders to Nuke path.
For example if you want to work with different versions of Nuke on Windows you may:
• unpack to C:/KeenTools (could be any directory);
• write the next lines to %HOMEPATH%/.nuke/
KeenTools will automatically choose which installation should be loaded.

Is there a silent installation/deployment flag for Windows?

Yes: "/S".

What will happen if I install KeenTools for different Nuke version or OS?

KeenTools won’t be loaded and an error message will be written to Nuke console.

Can I edit files and their location in KeenTools installation?

Making changes in KeenTools installation may break it’s operability.

How can I customize KeenTools menu?

You can find file in KeenTools directory and edit it as you see fit.

Licensing, purchasing


What is the difference between Floating and Commercial license?

Only floating licenses can be used with a License Server to be shared between multiple machines, while commercial licenses can be installed only on one machine (i.e. they're node-locked).

How to activate a license on a machine without Internet access? Is internet access required to use your plugins?

Internet connection is not required. You can generate a license file on a machine connected to the Internet and install the license file on the machine with our plugins. Get the Hardware ID of the machine where you want to use plugins to activate a license in order to generate a valid license file.

What is your licensing model?

Each license is valid for one year starting from the date of its installation.
Currently we have three non-free nodes: GeoTracker, FaceBuilder and FaceTracker. You can buy personal, commercial or floating licenses for them. All other nodes are free and require no license.

Can I use the work that was done before without a license?

Yes! The license is needed only to make changes. Your work doesn't disappear when your license expires, you can still use the results. What you lose is the ability to make changes.

Can my teammates use the results of my work without a license?

Yes! They can, since the license is required only to make changes.

What is the difference between commercial (floating) and personal licenses?

Personal license can only be purchased by an individual and used by a single person.

Can I use my personal license for commercial work?

Yes, you can use your personal license for commercial work.

Can I use your plugins with Non-Commercial version of Nuke?

No. Non-Commercial Nuke doesn't support any plugins.

Is a personal license limited in features compared to a commercial or floating license?

No, personal license allows you to use the full set of node features.

Can a company purchase a personal license?

No, a personal license can only be purchased by an individual.

Can a company reimburse my personal license purchase?

No, and our EULAs explicitly prohibit the reimbursement of personal licenses by companies.

Can I use my personal license at work and at home?

Yes, you are free to use your personal license for any purpose.

Can I use my personal license on multiple machines?

No, you can’t use the same license simultaneously on multiple machines. But you may transfer the license from one machine to another on several occasions.

Can multiple employees use the same commercial license?

Concurrent usage is not allowed by commercial licenses. This mean that two users cannot use one license at the same time.

However, it is possible for two users to share a license if they do not work simultaneously. In case two or more users work simultaneously each active user must have their own license.

We have 10 compositors. How many commercial licenses do we need?

Each active user must have their own license. In other words, if all 10 compositors need to run our software at the same time, you need 10 commercial licenses. See the question above for additional clarification.

How to get educational purpose classroom licenses for students?

If you're a representative of a school, please drop us a message at to get free licenses for educational purposes or a discount. If you're a student, please ask a representative of your school to contact us.

What payment methods do you accept?

You may pay using PayPal or a card.

How do you deliver licenses?

We deliver licenses by email.

I’ve completed my purchase and received the confirmation. When will I get my license?

Your license will be delivered in a few minutes.

I did not receive a license purchased online. Where is my license?

If you didn’t receive the purchased license in a few hours after the purchase, please get in touch.

What is license key and how does it differ from license file?

Using a license key you install a license for a node. License file describes a license locked to a node.

Do you have monthly subscription options?

No. At the moment we only have one year licenses.

How do I use floating license?

To use floating license you should install license server, install floating license on it and connect to the server from the node.
License server download contains step by step guide on how to use floating licenses.

How many licenses should I have if I use multiple KeenTools installations for different Nuke versions on a single machine?

You only need one license to use one node type (e.g. GeoTracker) from any KeenTools installation on a single machine.