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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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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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Seamless flow to/from virtual camera motion to motion tracked clip

I have a virtual environment, use curves to give camera movement. I would like to transition to a tracked camera of actual footage from the same scene. So far, I can get tracked footage the key ...
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Tracking the movement of beetles

I have a video of showing black beetles moving across a white surface. I want to create movement tracks of these beetles to study how they move to search for food (linear, curved etc). Can I use ...
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Create mask from geometry (for tracked scene)?

I want to create masks from geometry. Here's my situation - I started by tracking a video sequence, then created geometry (corresponding to the space I wanted to replace) and then, using a material ...
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1 vote
1 answer
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How to kill(or update) track-to/aim constraint for camera with Python API

I can track objects with camera constraints. I want to update object which we aimed(tracking new objects). So, I tried to update target object of the constraint but it does not work. Now, I am trying ...
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Stabilizing Footage with a 3D Camera Track

Hope everyone is doing well! I'm trying to use something called Apriltools to stabilize footage (where the footage stabilizes on the apriltag marker). Basically you print out this QR code looking ...
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Does 3D tracking in Blender work with 360 degree video?

I recently purchased an Insta360 ONE X2 camera, and I'd like to use footage from it with 3D tracking. Does Blender support it? If so, do I need any additional plugins?
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Can I animate the focal length for camera tracking? [duplicate]

I'm camera tracking my shot where I zoom in during the shot. When I tried to animate the focal length for the solve, Blender gives me an error that reads: "focal length" property cannot be ...
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What's the difference between "Set Scale" and "Apply Scale"?

In the VFX workspace, once you've tracked a shot, you can either set the scale, or apply the scale (pic below). What's the difference?
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Image jumps using autoscale when tracking point is lost/hidden

I am trying to learn how to stabilize a video clip using Blender (3.0.1 for Window 10). I have successfully created a set of tracking points and everything is pretty stable when playing the video. Due ...
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Got a low solve error, but 3d markers are not aligned to the 2d track points in the footage?, not even close?

So I'm trying to track a vertical video shot on my phone, with image sequence. Successfully tracked it with 10 track points, and checked each point manually and they're visually perfect or atleast ...
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When solving for camera movement my clip starts at frame 1 but camera is given a location at frame 0?

I've tracked and solved for the camera motion in a small clip. The clip starts at frame 1 but if I drag the playhead back to frame 0 then I see that the camera has a different location at this frame. ...
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Motion tracking perspective error / Tracking shot

I am trying to track a drone shot, but through the camera motion, the parts, which are more far away move more, so the solver thinks they are nearer to the camera. The trackers in front of the camera ...
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Match dynamic range of render to dynamic range of camera tracked footage?

Most tutorials on camera tracking tell you to change the View Transform from Filmic to Standard. In the documentation it says Standard is "Often used for non-photorealistic results or video ...
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Display aspect ratio

It says on the blender manual that "Display Aspect Ratio changes the aspect ratio for displaying only. It does not affect the tracking or solving process." : https://wiki.blender.jp/Doc:2.6/...
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Tracking points don't match my scene aspect ratio

I'm working on an anamorphic shot (4096x2016 and 1:33 pixel ratio) that I motion tracked without any issue by changing the aspect ratio on the track panel (in the motion tracking workspace) but when I ...
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Exporting face tracking animation to FBX to unity, no animation. No render in blender (Animation plays in blendr but not in dope sheet)

I'm fairly new to blender and unity and keep running into the same problems exporting as fbx. I have created a tracked face animation in blender but am having trouble exporting it to unity. The face ...
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Projecting from camera in a specific frame (and other vfx stuff)

I'm experimenting a bit with VFX. I have tracked the scene, solved the camera, put some area lights, put the shadow catcher and all that stuff. Now I am trying to put more realism using the mesh of ...
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How do I render a motion tracked scene?

I just tried my first motion tracking scene in Blender. When I went to "render animation" it came out gray. Any idea what I'm doing wrong? Here is the node setup if needed.
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How can I get the list of all tracking markers using python command

I want to get the list of all tracking markers for the active clip in the clip editor and loop through each marker, so that I can do something with the markers, like get the (x,y) co-ordinate or ...
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1 vote
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Motion Tracking - Upward Tilting Shot

I've been trying to motion track a footage that I can't wrap my head around. It's a handheld shot that slowly tilts upwards - towards the sky. I have plenty of trackers until the sky is revealed and ...
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1 vote
1 answer
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Motion tracking: Are two keyframes or a range of frames used to calculate relative 3D positions of tracks?

I'm shooting a scene where the camera will be on a tripod for the object-tracking part that'll be used in the final footage, but I'm moving the camera around first in order to allow Blender's camera ...
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How To Convert Motion Tracking From After Effects To A Blender Camera?

I have a video of actors on a chroma screen running toward the camera. I need to animate a camera in Blender to match the real camera's shake (it was an intentional effect during filming). I had ...
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How do I find out the lens distortion model (K1,K2) for a lens on my GoPro? [duplicate]

I have shot a video with my GoPro with the "Wide" lens. There is obvious distortion on the footage and I've seen it replicated in blender using (if my memory serves me right) the K twins. ...
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3.0 Crashes upon Motion Track

I'm having a problem regarding Blender 3.0 . when I import a footage to motion track blender crashes , it only prefetches half the footage and upon reaching the half where it didn't buffer it crashes. ...
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Tracking VFX Refine help

I'm trying the tracking with blender after using 3dEqualiser. I'm quite impressed on how well it works, although, there is a setting that is probably missing. When you have your points, you can refine ...
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How Do I Add VFX To A Stationary Flat Video?

I want to add a window behind the subject, but how would I go about doing this if the video has no camera motion and it's a flat shot? Thank you for you help.
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Motion tracked video only matches when background footage is scaled up

I've got this motion tracked scene and a photoscanned model of said scene. The motion tracking and everything is lined up enough for what I'm doing, but only if the background image is set to 1.75 ...
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change anchor frame in stabilization/motion tracking

I'm trying to stabilize footage of a 6km long road, shot by a drone. I'm trying to stabilize, to keep the middle off the road. But because the road is so long my anchor frame need tot change overtime.....
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Add Camera Solver constraint to a camera that's set up for a frame other than 1?

When I add a Camera Solver constraint (created from tracking a video clip) to a camera (in my case one imported from fSpy), Blender always behaves as if the camera is set up as it should be for frame ...
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Blender tracked well then suddenly lost all markers on one particular frame?

Tracking match was set to Previous Frame, the tracking was going perfectly - then on one particular frame (that seems to have no unusual characteristics) tracking was suddenly lost on all the markers. ...
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2 votes
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Plane Image that follows more than one camera?

I'm creating a complex model of a city, there are a lot of trees. I decided to go for cutout trees that follows the camera with a track constraint. Now I need to create multiple points of view with ...
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How to track a 6km long road. How to dissolve markers

I need to track a 6km long road. Its 4k footage made by a drone and I want to stabalize the footage along the way. When I stabalize and play the footage, and one tracker goes off the screen (because ...
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move plane with 3 tracking points without deforming it

I want to add images as planes onto a video with tracking points but I cant get the plane to move with them.
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1 vote
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Is possible to increase or reduce the brightness of the clip when i do the 3D Tracking?

I'm using blender to track a lot of video clip end insert 3D objects on the scenes. Blender does a very good job but sometimes i have difficult to do this because some parts of the videos are too much ...
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