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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Blender Camera issue when trying tracking

I have an issue with Blender Motion Capture. I tried to follow this tutorial about Motion Capture/Headtracking youtube blender Mocap tutorial HOWEVER I encountered an issue with my Blender at 2.23. ...
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Blender VFX camera tracking trouble

I cant seem to get the camera tracking markers and the original video to line up properly. I have been following this tutorial and I feel that something is missing. It may have to do with my camera ...
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How to keep an object off center while tracking it?

I have applied the Track To constraint to a camera in Blender (3.2.2). It tracks the target object. Perfect till here. But it keeps the object at the center of the frame, while I want to keep the ...
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Video goes inside the ground plane (motion tracking)

I'm really new to motion tracking in blender, and for whatever reason, the video is only being shown inside of the "Ground" plane. In the motion tracking tab: In the layout tab (Render ...
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why do my trackers not align properly with in the view port compared to the clip editor?

as you can see in the below images the trackers in the clip editor aren't in the right place in the view port (to see it clearly look at the highlighted marker). This influences the scene and when I ...
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Script for adding mesh as depth target to empties doesn't work

I'm following this tutorial for face tracking and used a few lines of code to add the face mesh as a depth target for all the trackers which are empties. Actually, I just wrote the lines from the ...
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rotation slightly off when using track constraints

I am using some tracking constraints to get a gun to point to a hand. This is what I have so far: It all works perfectly fine but as you can see, the left hand is not holding the gun meaning the gun ...
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Configure a camera to chase a flying drone with realistic lag?

I'm animating a flying drone, adding noise via the graph editor to make it wobble and such like a drone flying through shifting air currents. Now I'd like to add a chase camera a few feet behind the ...
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Modifying Camera Solver keyframes

So I'm quite new to Blender, but have 15+ years with 3DS Max... so apologies if this is a basic error I've tracked a drone shot and set up a 3D scene in Blender. It seems to work OK, but the camera ...
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How to snap object or cursor to solved track marker?

Is there any option for snapping the cursor (or a object) to a selected camera track marker?
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How can I export phone sensor information to Blender? [duplicate]

In short: video tracking using Android 11 smartphone sensors, without using tracking markers. I need to export movement information from android sensors to a program. Can this be done with addons or ...
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Nuke to Blender Lens Distortion: Centre vs. Optical Center

I'm working on a project where I need to undistort videos taken months ago, which have no corresponding calibration images (checkerboard, etc.). I have been using Nuke to estimate the distortion ...
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facetracking: how to track markers manually which Blender does not recognize?

I am trying to track some tracking markers on a face. A part of the clip works very well but at some frames, Blender does not recognize the tracking points at all. Is there a way to track those points ...
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How do you make your CGI object appear on replaced video on blender VFX?

I decided to replace the video I was using on blender VFX with a new one. I tracked the animation with the new video and it was the new video when I looked in the camera view. However, when I clicked ...
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I got a 0.00 error in blender motion tracking. Is it possible?

This an image to proof that I got 0.00 and my question would be: Is it possible? What does it mean
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How to Bake down all data to a single object

Can anyone please suggest how can I bake all the data into a single camera object? I have exported a camera track from 3dequalizer. When I import it inside blender this is the structure that I get. ...
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Motion tracking slipping and MANY MORE ISSUES

I have been trying to learn motion tracking for 5 days and all the results I get are inconsistent. It's either I go through the solve error starts really low, I decrease maybe a trackers weight solve ...
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Why can't i see scene in 3d Viewport even after setting up track scene and switching to camera view ?????

I have tracked 8 points and after solving camera i have setup tracking scene and still i cant see anything in viewport why ?
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Camera tracking, known sensor size is 1/2.3": How do I convert in mm? CMOS vs CCD?

I'm learning Blender camera tracking and a bit unfamiliar with sensor sizes and how to enter the proper number in the Sensor width box under the Track tab. I want to convert the information from ...
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Why don't some tracks have a bundle?

I'm playing around with motion tracking. In the scene, I have around 14 trackers that all look perfectly fine throughout the tracking. What I don't understand is after solving only some of them have a ...
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motion tracking markers

I am getting surprisingly high solve errors on my trackers. The tracker does wiggle a couple of pixels I would say, but not like 400. The other markers are also quite bad. Any hint?
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Changing the pattern and search size of trackers in Blender Python

This may seem like a very simple questions but I cannot find/work out an answer that is consistent among all script. I need to change the pattern and search size of my motion trackers using Python. ...
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How to activate Clip Editor only in Motion Tracking workspace

I am attempting to use script to add a sequence of frames directly into the clip editor of the Motion Tracking workspace. I need them in this workspace so I can then track motion without having to ...
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How to activate clip editor in motion tracking workspace

I am attempting to programmatically use motion tracking in Blender. My script successfully adds the image strip to a clip editor but not the one in the motion tracking workspace. ...
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How to match move a green screen video with a static background

I am trying to figure out how to get a static background move with green screen footage. The problem that I am having is that the footage is with a moving camera. The actors are sitting at a table. I ...
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Tracking different clip to different camera

my question is how I can apply a different clip camera motion to another camera. I manage to import various clips in the motion track tab and track them but there is no way I can solve the track to a ...
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How do you camera solve only specific parts of footage?

I am trying to motion track a scene in blender but will have to do the final part manually because there is zoom. How to I make the camera solver stop solving at some point? I have already tried just ...
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Masking out actors while doing Camera Tracking

I'm doing a camera matchmove tracking from a greenscreen plate with markers Blender's tracker is the one i'm having the most fun with but i'm really struggling because i couldn't find a way to mask ...
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Object casting duplicated shadows on different objects

I'm inserting few objects in blender after doing motion tracking on a video. There's a plane that represents the floor (set as shadow catcher) and then, as you can see in the image there's a sort of ...
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How to track billboard background plane to camera?

I've got a billboard plane I'm using for a scene background and I have it aligned square to the active camera. I want the billboard to track to the motion of the camera so that when I move and rotate ...
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Drone camera filmed a specific location but moved slightly during filming. How can I cut every frame to conform to this spatial region?

I am a researcher studying movement tracking with large groups. I have drone footage of a marching band practicing on a band field. I am extracting x-y coordinates of every single band member from ...
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Compositing - how to anchor a pre rendered layer to a motion track marker

I've nearly completed a Blender composite which has taken much longer than it should have. A lot of the problems have stemmed from the motion tracking not matching when the 3D work was done in Maya, ...
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Track light to Empty - with ability to rotate Light or Empty

I would like to point a Sun Light to the World Center. Track To with -Z & Y up does the job nicely... but I would need to rotate the sun around Z and also around Y. (Azimuth/Elevation) If I track ...
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Masking in footage something that comes into view and leaves

I have footage where the camera pans and e.g. a carpet rod comes into view and then leaves the view. I want to create a mask to later remove the rod with e.g. inpaint. Objects which are there for all ...
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How can I create a geometry from a keyed part of a video?

I keyed out two characters in a shot. Now I need to create a geometry from their exact movements. How do I do that?
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How Can I Perfect A Camera Solve Export from After Effects to Blender?

I have this footage of me walking through a parking lot and I want to replace the ground with the ocean in Blender. I want to make it a "walking on water" type of video. I did a camera solve ...
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3D tracked camera is clipping object out, how to fix it? [duplicate]

Thank you for reading this post. This is what happened: I first solved the camera tracking in one .blend file and then exported the camera as an Alembic(.abc) Then I opened a new .blend and import the ...
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Manipulate camera track motion

I'm jumping from motion tracking in After Effects to learning motion tracking in Blender, and I've run into a problem. Following this tutorial (https://www.youtube.com/watch?v=lY8Ol2n4o4A), I've ...
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How do you rig an armature with automatic weights without it getting deformed?

I am trying to rig my armature with automatic weights to a download of a 3d facemodel. I already uploaded the tracking data and when I parent the rig to the mesh, it becomes badly deformed. Yet the ...
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Delete Camera Tracking Keyframe Mid Move

I have a "decent" solve on a camera track but there is a hiccup at frame 46. Is there a way to see the camera track position keyframes similar to After Effects where one can simply delete a ...
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Start "Track To" at a later frame

I would like to start the "Track To" after a random time and stop it after a random number of frames. Can anyone help me with this?
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Using AE2blend to import camera track from After Effects

I have recorded a very simple (I thought) bit of footage that I want to track and set as a floor plane. I used After Effects to generate a 3D camera track, which looks like it works: I installed ...
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How to add 3d objects to video? (beginner) [duplicate]

So what do I need to do in order to get 3d model rendered in video? In my case I shoot drone footage and I want to add some objects in it e.g building that hasn't been constructed yet. So what it ...
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please someone help 3d camera tacking scene vanishes when setting the origin and floor

i am attempting to 3d camera track live footage in blender i have my scene all camera tracked/solved, my plane and cube are visible at this point but the perspective is not correct so i then choose 1 ...
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Change camera tracking object

I am wondering how I could change the tracking object of the camera? Maybe something Similar to a key frame for what object the camera tracks to? I am using a camera object constraint for this. Thanks!...
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Replace this Slime In Scene

I've just dived into Blender over the last few weeks in order to gain some skills to solve a filmic problem. I of course did the Donut tutorial and really enjoyed the process. Here's my question: I ...
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Blender Tracking

hi guys, im new to blender, just wondering if its possible for me to switch the "follow path" for an object? i have 2 path and i wish for the person to walk along the path on the 2nd floor ...
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How to set up clip editor to have movieclip set from command line

I've been trying to set up a scene for motion tracking entirely using a python script from command line. My code involves simple.blend file, which is a pre-saved blank scene with default motion ...
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How to combine 2D animation and motion tracking?

I'm trying to do a 2D animation. I'm compositing a shape on top of existing video footage, and I want a figure to follow the motion of someone in the footage. Because this is all 2D, I don't want a 3D ...
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Extract location, rotation, scale data from 2D Stabilization node for a given frame (using Python or UI)?

I'm using a Stabilize 2D node as the last node in my Compositing workflow and would like to know the location, rotation and scale that it's applying at a particular frame, e.g. frame 201. I want this ...

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