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Questions tagged [tracking]

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Questions about Blender's 3D motion or object tracking system. Object tracking is accessed via the Movie Clip Editor.

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8 views

Motion tracking black clip

I was using blender 2.81 I pressed something on my keyboard, and the footage turned black. The preview of what the tracker can see is still fine. I can't share the blend file because of privacy ...
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23 views

issue tracking sequence

I am new to blender, I recently started to learn VFX. I get an issue with tracking. I keep getting those 2 errors : - ...
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4 views

Camera track a Grase Pencil layer?

I’ve done a camera solve for a video background, but can’t get my grease pencil layer to distort based on the generated trackers. I can get it to move with one tracker’s position, but no idea how to ...
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23 views

How do I attach an object to an animated Fps Model?

My goal was to have a rectangular prism under an animated first person shooter arm and track its transformation without it warping. This is the arm that I am using. As you can see there is no ...
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1answer
14 views

Object Appering in preview mode but not in renders

I'm Trying to render a box on top of a video that ive tracked in the 3D viewport everything looks fine but when I render the frame using f12 the geometry is missing from the rendered image. I'm ...
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20 views

How to export a 3D Matchmoved camera?

I used the Blender Tracker to create a 3D Camera solve and need to export it to another 3D package but can't seem to figure out how. Neither FBX nor Alembic take the animated camera with it.
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10 views

Track or monitoring of 3D displacements with Blender

my question is related to the motion tracking feature in Blender. I have successfully applied this feature to track the movement of a series of markers in a column during an Earthquake, based on a ...
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1answer
12 views

How do I fix the camera roll to its parent object? Blender 2.8

I have a space ship that follows a path across my scene with a few cameras to record it. One camera I would like to use for a sort of point of view effect when the ship enters a barrel roll, however, ...
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18 views

Trouble making an Xwing aim with a crosshair and sight

I have been working on a flight simulator game for a while now, and have run across a problem I can't figure out. The spaceship is an x wing and I have all the logic with shooting and all that, but I ...
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7 views

Strange moving Texture in my Visual FX shot during following a YouTube Tutorial

When I try to recreate the effect in this Youtube Tutorial (https://www.youtube.com/watch?v=3df4Lxchf4Q&t ), then the last steps where he is connecting the track position node with the translate ...
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10 views

How to parent a mask to more than 1 Trackers?

I have done a track where are many trackers. Now I have created a mask around this object that I have tracked allready and I would like to parent the mask to all these trackers so that the location, ...
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23 views

Text Motion Tracking in Blender 2.8

I'm in the movie clip editor screen and I've just successfully created a motion track. I want to add a .png image of some text and attach or parent it to the tracker so that the text follows the ...
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12 views

How to track moving camera footage in green screen

I already read this Inserting green screen footage into 3D space . But I still have some questions as I am pretty new to Blender. So I have a green screen scene and I put my camera on a slider to ...
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1answer
81 views

Camera tracking data import

Is there a way to import camera tracking data, like .json or .jsx files into Blender?
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1answer
25 views

How can I show the Search Area box on a tracking point?

This has never been an issue until just now but consulting the official documentation it appears that there should be a search box which is distinct from the pattern area. https://docs.blender.org/...
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13 views

Misaligned Background Image in Viewport but not in Viewport Render Image

I've been camera tracking a simple shot and I am experiencing an odd behaviour when setting up the tracking scene. Below is the view from my viewport, all of the points look misaligned despite a low ...
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1answer
14 views

Change length of motion track marker trails?

I thought I had remembered there being an option to adjust the length (in frames) of the red and blue motion trails of the markers in the movie clip editor. Does such an option exist?
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15 views

Eevee doesn't render 3D camera track but cycles does?

I've camera tracked the scene and everything in the compositor is right yet, when I rnder this out in Eevee, even though the plain is in the "background", it still renders it. But in cycles, it works ...
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12 views

Motion Tracking not tracking

I tried using the motion tracking feature again and when trying to track, after about 300 frames the trackers just can't find anything. I've already tried lowering the correlation and hand tracked ...
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17 views

Weird grey bar at bottom of movie clip

I'm trying to use Blender for some basic motion tracking, but I've already stumbled upon an issue just by importing a movie clip. My clip is ok, but when I import it in Blender (the exports have it ...
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1answer
47 views

Import FBX Camera animation - rotation issue?

I'm trying to import an animated (position and rotation) camera from a FBX file, however, when I do the animation is completely wrong and doesn't match the movement of the camera from the other ...
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10 views

Modify timing of a camera tracking

Let's say I have some movie footage (250 frames, say), do motion tracking, and solve for camera. Now I want to play through the tracking and associated background footage at a different pace. For ...
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20 views

Motion Tracking: When will “Prepass” enhance Motion Tracking quality?

I tried to figure out, when Prepass should be used in the Motion Tracking Settings. I understand from the wiki that... Prepass Enables a two pass tracking, where the first pass is a brute ...
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22 views

how do I use my motion tracking data (face track) and apply that to a MHX2 rig already applied bvh mocap?

I have tracked my face using motion tracking and linked empties to track. i would like to apply this data to the face keys of the MHX2 makehuman (which will have its own bvh from carnegie melon) - ...
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17 views

How to track the sky to get the fly over effect

I can trackmotion on the ground and put in one object but I don't know how to fly over the sky. one aircraft fly over the sky with camera movement. There is no track markers can set the floor,all ...
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21 views

Rendered motion track is jittery despite low solve error (0.3)

I have done some motion tracking and overlayed a 3D model onto my tracked footage. The track itself seemed promising, with a solve error of about 0.3 (after a lot of fiddling). Scrubbing through the ...
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29 views

Dopesheet (motion tracking): Keyboard shortcut to jump to keyframe?

I'm motion tracking a long shot (1000s of frames) with numerous tracks which are only valid for a portion of the footage. It's hard to discern if a track has stopped tracking because its gone out of ...
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1answer
41 views

Reconstructing camera panning movement in 3D view using track data for Loc only

The idea is to do exactly what CG Matter did here but instead keep the empty fixed in the global system, and have the camera move. The camera is basically panning over a surface. It seems as if the ...
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42 views

Solve error skyrockets after filtering

Before reading: I have already followed this popular post and this post on lowering solve error intensively, along with this guide and this guide. However, when it comes to eliminating tracks that ...
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17 views

Why does Movie Clip Editor use so much memory?

What's the reason behind blenders intensive use of memory when it comes to video editing/tracking? I'm using Blender 2.8 and currently have a ~15 second clip loaded (@50fps, 3840x2160, 99779kbps, ...
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7 views

How to make a path from plain axes?

I've tracked a video moving straightforward with After effects, and imported it to Blender 2.79 by scripting it. https://www.youtube.com/watch?v=25PdKbXHDe8 The markers were imported as many plain ...
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30 views

Background movie clip not showing behind shadow catcher in 2.8

I just downloaded Blender 2.8 after using 2.79 and noticed the background image option in the N panel missing. It seems this problem has been asked numberous times and still unanswered so I'm hoping ...
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1answer
18 views

Video rotated after importing it for motion tracking

I'm importing a video file for motion tracking, that has been shot on a phone. If I open it with Windows Media Player or After Effects it's not rotated, but it is when I import it to Blender. Any help?...
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29 views

Control stabilized video speed so I can stabilize a 1fps slideshow with smooth panning

I have a shaky timelapse (png sequence) where the camera pans across the scene. I have 100 pictures taken at 1 fps. I would like to create a 30fps video where the panning is smooth but the input ...
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1answer
16 views

Adjust Background Transparency after Motion Tracking

I have done some motion tracking with some footage I imported and used the 'Set as Background' option so I can see this footage through the camera view. I now want to work on compositing a 3D model ...
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18 views

Blender 2.80: Have a good object track, but object moves in the direction opposite of what I want… How to fix?

I have a scene that requires both camera and object tracking. I've set up what I think are the correct types of tracks for camera and object. The object solve error is 0.5978 and camera solve error is ...
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9 views

Motion Tacking not Rendering Objects

Im having an issue where when I render it only renders the movie clip and not the objects. I used the basic composite setup and it still doesn't appear. Any ideas? EDIT: Added a link for the file: ...
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11 views

How can i use keyboard to translate tracking marker

i need to supervise tracking marker. Is blender has shotkey to translate the tracker like Syntheyes or 3DE? I can't find it in the Manaul. Thank you.
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28 views

Are there any other ways besides motion tracking?

I have an animated model with vertex parented empties (img 1) I need to transfer these positions to another blend file so that they are on the same z coordinate. And so that there was a camera on top. ...
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13 views

I am tracking points from a video in blender but if I render the animation the objects that I have put in the scene only render the shadows

I am tracking points from a video in blender but if I render the animation the objects that I have put in the scene only render the shadows:
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1answer
72 views

How to properly solve camera motion?

I just got started messing around with motion tracking and the largest issue I seem to have is getting the tracking points to the correct location in 3D space. For example, I could get a dozen ...
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32 views

How can I match render to tracked footage? (VSE, 2.8 release candidate 3)

I'm making a video with a little geometry dash course on top of real footage. I tracked the footage as well as I could, made the course, previewed the scene before rendering, and it looked perfect. I ...
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1answer
35 views

Camera tracking : solving floor plane when the floor is not flat

How would you go about adding a floor plane of a camera tracked shot with multiple tracks on the floor but the floor is not flat (like the unevened surface of a mountaine top or something) therefore ...
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27 views

Orientation details for Motion tracking in blender

I have a script to extract coordinates from motion tracking in blender using Motion Model: LOC. However, my question is if we use "LOCROT" as Motion model to track rotation as well how is it possible ...
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1answer
54 views

how to track rotation?

I am in was working on a project to track a boot model to live-action footage however when I try to track the rotation it is not accurate and it wobbles all around the place. one idea I had to track ...
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86 views

blender 2.8 on mac - motion tracking and shadow catcher

I followed the tutorial for motion tracking in 2.8 here All went very well, but in the final render, the ground plane is opaque and blocks the background. I'm on a MacBook pro, 10.13.6 and using the 2....
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39 views

How to motion track films where track points get out of screen?

Situation, a quadcopter drone video, it flies 500m away with a view corners moves then does 360 turn and flies back. I want to camera track this, but the trackpoints get out of view after a short ...
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37 views

Using distortion grids

Hi I'm planning to use blender for some vfx stuff and I'd like to use distortion grid to generate lens distortion profile, is it possible unside blender or maybe use pftrack to do that? Actually ...
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29 views

Can tracking data from Blender be exported to use in Fusion?

I’m new to blender and resolve and was curious if it’s possible to do the tracking in blender and then send tracking data in some way to resolve to use in fusion? If so, how?
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484 views

Shadow catcher blocks background image in latest builds of 2.8

This question has been asked before but not properly addressed. In the latest beta builds of Blender 2.8 including the release candidate, the shadow catcher is acting in an unexpected way in the ...

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