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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24 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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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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32 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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29 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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23 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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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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41 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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17 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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30 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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23 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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24 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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73 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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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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135 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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47 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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58 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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22 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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30 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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34 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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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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45 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
51 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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36 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
25 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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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
52 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). ...
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30 views

Tracking Problem with floor and wall and other things [duplicate]

I'm try to track a video with a garage. I tracked the garage and the solve error is 0.11 because there is no movement, and now I want to model a sci-fi door that will be placed instead of the garage ...
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How to Solve One Marker Track

I have simple web page scrolling (up & down) with only one marker (per several frames). It's basically motion in Y axis. How can I get this "analyzed" data to be solved, since blender is asking ...
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34 views

Camera tracking; movie clip does not show up as background footage

I tried to replicate what Andrew Price did by creating a large sink hole in the middle of the road using blender. https://youtu.be/CVPcT0dJmoY I have tried to replicate it, but I am stuck somewhere....
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79 views

When should I use different tracker motion models when motion tracking?

I'm trying to get into motion tracking but don't know when to use different tracker motion models, or if it makes a difference in the outcome of the track. Could someone please explain, or link me to ...
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1answer
34 views

Exporting camera tracking markers from Blender

I am trying to use blender to do some matchmoving and then export the camera along with the tracking markers for use in other software. After getting a successfull track, I have created a vertex cloud ...
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51 views

How can i reduce the size of my shadows?

I am lighting my scene with an spherical environment map. As you can see in the image below, the shadows casted on my shadow catcher are way too big. How can i change this?
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36 views

motion tracking timeline colors

I can't find the answer in online docs, or elsewhere. Would you know what the magenta colour means on the motion tracking timeline? There doesn't seem to e different amount of valid tracking markers, ...
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35 views

Can't motion track backwards

So I'm trying to track a panning footage(start in center, pan left, pan right without stopping in the middle, and back to center.), and I want to place the tracker in the end where there is no motion ...
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Can i adjust a null tracker to be the one move and NOT the whole 3-d plane?

This is my problem: https://gfycat.com/HelplessCautiousAlabamamapturtle My entire 3-d plane is moving instead of just one object
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How to add a 2D png into my tracking data instead of using a 3D model [duplicate]

I have a GIF I'm working on where I track a 2-D PNG of Nero's head onto tracking data. Trouble is, every tutorial I go to uses a 3-D model (like the monkey) to link to the tracker and none uses a 2-D ...
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2answers
23 views

I've compiled all my tracking data but when I go to default to add the object, the video isn't in the background

I'm tracking a child on a swing on the video editing window and clicked the Setup Tracking Motion button in the Solve tab to ready the footage to edited with 3D objects in Default. But lo an behold, ...
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24 views

Motion Tracking Invisible Object Not Doing Its work properly

Okay, I am not very good in the motion tracking sector, but basically, the shadows are very weak and I have no idea on how to change that, they are so weak to the point of being invisible at some ...
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22 views

Does the motion tracker follow a point if it changes colour throughout the video?

Does the motion tracker follow a point if it changes colour throughout the video? Like an colour changing led dangling from a pendulum or a firework mid-flight?
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51 views

Solve Error High [duplicate]

I don't know why the solve error is high? It should have been an easy tracking. Footage have well contrasting markers. Can anyone please help me understand why this is happening and how can I get more ...
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19 views

How to get realtime reflections from motion tracked video?

I wanted to know if there is a way to get realtime reflections from a video, like if I have a motion tracked shot of a balloon festival; Naturally this will have a lot of moving colors so it isn't as ...
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21 views

Wrong tracking marker position [duplicate]

I have encountered a serious problem when using tracking markers: I tracked a single point over a range of 3000 frames in small steps e.g. I manually corrected the position every 50 frames. When ...
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126 views

How to use the XML file (which contains the tracking informations) produced by Faceware Analyzer with Blender,better if 2.8

I'm playing with FaceWare Analyzer. I have imported a little video which contains the facial (eyes,mouth,eyebrows) movements of a guy,I have tracked them and I have exported the XML file which ...
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Damped track twisting or how to make robot's joint

I'm rigging my robot's model (consisting of many meshes) and have been trying to solve joints' behavior problem (it's a problem 'cause I wanna use mocap for him) for a long and have ended up with ...
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Won't get a render at all after my CameTrack

I am working on a camera track scene and everything looks fine until I want to render the scene, I get a transparent output but I can't see why. I have checked the compisite layers, removed any mesh ...
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26 views

Aligning motion tracked points to geometry

I'm motion tracking a video of which I know the exact 3D coordinate of each tracked point. I have a 3D replica of the scene and want the camera to align with this scene. Is there a (semi-)automated ...
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70 views

trackers not showing after making camera solver

I've been tracking a video but when I add the object constraint "camera solver" trackers aren't showing in the 3D view...can you help me, please? Thank you
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99 views

motion tracking - is there a way to automatically clear tracks after they leave the frame?

hi there I am tracking a video with many tracking points to decrease solve error. many of them leave the frame by the end of the video. is it possible in anyway to automatically clear track data ...
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110 views

Help with determining camera specs? Blender Motion Tracking

I have some experience working with Blender's motion tracking capabilities, but have only used cell phone video that happened to be presets in the camera specs dropdown in Blender. I am trying to do ...
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How to link armature to empty tracks and insert animation to the animation?

I have a set of empties with animations which act as bone joint positions. I want to link an armature to it and I want it to receive the animation by following the bone joint positions. I tried copy ...