Questions tagged [tracking]

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

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9 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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6 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
12 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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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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9 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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15 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
16 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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9 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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14 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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13 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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19 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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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
36 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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40 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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6 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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23 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
16 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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26 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
14 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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15 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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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
55 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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31 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
28 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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26 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
52 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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70 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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35 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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32 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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28 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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329 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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23 views

Motion tracking: Solve error jumps after cleaning

My Solve error was 1.5, so I cleaned all tracks above a solve error of 2, which was only 4 out of my many trackers.I solved it again, and boom! My Solve error jumps to 143! The blue line in my graph ...
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1answer
153 views

Align object after Motion Tracking: Edited

I am tracking an object in a video, which I want to replace with a 3D object in Blender. After tracking, I solve motion, and apply an object solver to the 3D constraint. This is where I get lost. I ...
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53 views

How to change all the location,rotation and scale values of a keyframed camera

I have this scenario : I have separated a scene from a full lenght movie and with the voodoo camera tracker I have extracted the camera movements following this tutorial : and then I have imported ...
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1answer
59 views

Tracking; Does Blender know?

OK, so I'm tracking a box in a video by tracking dots on each side, and at certain points in the animation a side of the box disappears, and then later on that side is visible again. As a result, the ...
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1answer
41 views

Background image not appearing in motion tracking render

I have another project that is exactly like this one but that one works, even though they have the exact same compositing setup. Any reason why this one doesn't show the background? Blend file: https:...
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1answer
61 views

Syncing a Blender camera tracking scene to an Fspy camera match

I've been having issues orientating a tracking scene-- For a recent project, I started by doing a camera match on the first frame in Fspy, which produced an amazing result, as evidence by the sample ...
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1answer
35 views

How to create a pole to follow and empty with arbitrary origin

I want my "pole" follow point B from point A with no stretching, this way Intead of this I get this: How can I follow the point B using the pole, keeping the point A as origin, and keeping the ...
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1answer
22 views

Why did my tracks disappear?

I shift-clicked the X, you know the one next to the F for saving a data block; did I just erase all the info from the solve? I thought the tracking info was linked to the Camera, not the video clip? ...
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1answer
75 views

Does scale of camera have an effect on camera tracking a scene?

I am doing a camera match/track (markers on the floor and walls, they are scaled differently and key frames on necessary frames when something passes in front of the tracked point). Sorry if this ...
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1answer
70 views

Solve camera motion in Blender: exact camera data or refinement?

My footage is made with a Phantom 4 Pro (for which I know the exact camera data - sensor size, focal length), and would like to solve camera solution as precisely as possible. Which of the following ...
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37 views

How can I track illumination on a polygon in blender?

I am looking to be able to track the amount of light that is present on the different surfaces of a polygon, any ideas welcome. For example I am looking to record the amount of light/illumination that ...
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1answer
29 views

3d track stabilzed video?

Tracking shaky/handheld video is difficult because a) motion blur and b) potential track marks jump around wildly. The first makes the quality and precison of a match worse and the second requires to ...
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17 views

Does tracking marker pattern area being moved affect camera tracking?

Does tracking marker pattern area being keyframed to a different shape affect/effect camera solve camera match? Does tracking marker pattern area being key framed to a different shape affect (effect) ...
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1answer
82 views

Tracked video not showing in the 3D viewport in rendered mode

When I try to composite this with my cg object it doesn't work. After completing the tracking I have set the tracking scene, but the video behind doesn't works or shows while in render mode(cycles). ...