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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5 views

motion tracking fish eye

I have tracked a footage and added Suzanne to it . motion model: perspective n Suzanne has moved in perspective.moving from depth of view to forward. my footage has became somthing like fish eye.but ...
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How can i add an glass objet to an motion tracked scene with proper light coming through it?

i have a scene with a cg glass cup and there is no light coming through it, how can i fix that, i thought about HDRI but i dont know if that would help, im quite new to 3d modelling and everything in ...
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issue with taking video the track always stop after 50 frame

issue with taking video the track always stops after 50 frames when i do it automatically or manually its the same and i can't continue the tracking manually or automatically the tracking frame is ...
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23 views

Interpolate motion between motion track keyframes

I'm trying to get a simple 2d track from points on a finger. Sometimes the finger moves quickly and the tracker loses it for a few frames. Once the finger settles, I'll manually move the track back ...
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18 views

How to Composite a CG object behind a real object? [closed]

I am looking forward to compositing CG objects in real life footage, want to know how to composite a 3D object behind a real object. For example a CG gun in real hands. Please help. (I am an ...
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31 views

How do I make an object which hides 3d objects behind it, but shows my video background? [duplicate]

I am currently interested in tracking 3d objects into my videos. I am not sure how to create what looks like a hole in the ground. If I used a sqaure with no top face, the outer sides of the cube ...
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14 views

Motion tracking always gives me error messages and acts unpredictably

I have done my research and know that a reason for this might be that I don't have eight good trackers. However, I do have at least eight trackers in every frame of the shot, and I still get the same ...
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Rendering after motion tracking, only result in the cube and plane

So I followed this Voodoo camera tracking tutorial by CGMatter It works just fine until when I hit CTRL+F12, the video only comes with the Cube and invisible plane shadow catcher. I am a beginner in ...
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Object track to rendering camera or active camera

Here I have a project of several landscape views from different cameras. I found in this new blender 2.82 that we can now add text objects. What I'm looking to do is to track this text objects to the ...
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Problem with rendering, only render one frame of 126

I'm trying to render this motion tracking face that I've made. I'm having to different problems: with cycle blender is rendering only one frame for 126 that are in the animation with eevee instead the ...
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34 views

Does anyone know how to fix random tracking errors in Blender?

I am using this as a last resort, since I have been reading forums and trying over and over again, and have watched just about every YouTube tutorial. Blender is giving me such random results on my ...
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19 views

Missing Detect Features properties in Blender 2.8x?

According to Blender Manual (2.8) https://docs.blender.org/manual/en/2.82/movie_clip/tracking/clip/editing/track.html, Detect Features should have properties like Placement, Margin, etc... which I can ...
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15 views

How to get/change camera coordinates after Solve Camera motion?

I am trying to reach camera coordinates (and make small changes) for each frame after doing Solve Camera Motion and before Setup Tracking Scene. I tried digging into ...
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31 views

Problem solving geometry or camera alignment using tracking

I'm looking for some help trying to solve the geometry / camera positioning for a show clip. After many days of testing and tweaking I still can't get a matching result and I just don't understand why....
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15 views

smart facetracking blender addon?

is there no addon anyone made yet for simple facetracking in the fashion of like "moves" from maxon for c4d? maxon moves addon for c4d I know you can track faces in the motion tracking Editor of ...
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19 views

Cannot get my camera to solve correctly during a motion track

I am trying to track the included scene to remove the black wall and replace it with something else. Problem is, I can't for the life of me figure out how to track this properly and get it right. I ...
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17 views

Automate the rotation of camera around an object with python

I have a 3D model of a liver and I wanted to get the rendered images of the model from various angles like the ones shown below. The path the camera would traverse would be roughly circular/...
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28 views

Weird warping of render image in Camera track

Hi guys, Please help me fix the render image as there are weird warping in the corners of the image. I'm using cycles.
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1answer
40 views

How do I motion track a camera when the scene contains more than one camera?

I'm recreating my house and garden in Blender and as part of the process I'm taking photos from several angels and then motion track them. I've done this on several locations around the property. As ...
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16 views

Export Empty and Camera xml animation data

Is there a way to export empty and camera xml animation data to import into Toom Boom Harmony? I want to use this data in Harmony as pegs so the 2D characters can move in 3D space, since my ...
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26 views

How do I use path tracking in a 3D space?

I am new to game engines and have a project of my own. I've created an aircraft game, but I am stuck at a certain point about path following. How do I make an enemy asset follow the player whilst the ...
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22 views

Show N marker positions

How can I have Blender 2.82 show N previous and M next marker positions in "Movie Clip Editor"? The default number of previous and next markers are 20 and 20. I want to set it to 2 different values ...
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1answer
32 views

interaction of footage in 3D scene

Any Ideas on how to make Gloss and Transmission interact with the footage ? I tried modeling those items on the footage but the camera wasn't matched perfectly. So any chance on doing the trick on ...
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36 views

Motion tracking error

I keep getting cant reconstruct error every time I solve, it keeps jumping from different scenes with that error. When I first done a motion tracking before it was on the the clear, now its not. I ...
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9 views

Using the bpy.ops.clip.track_to_empty() with tracks offset. Get each track properties by Scripting. Set each track properties by Scripting

I want to ask one question. I'm using Blender 2.81. I have tracked my face emotions. I want to put this tracks on detail, that has dimensions, not the same, like my face. I have offset whole tracks. ...
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24 views

I finished tracking, now what?

I am very new to Blender. I have a video of my son waving a stick around. I am trying to change the stick into a light saber. I am not trying to do anything fancy, just trying to learn the system more....
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What's the ideal method for Camera Match Orientation?

Even with a great Solve Error of .2404 give or take, my Camera is beyond the viewport clipping range? Properties shown... I see buttons for setting the scale to 1.000 but cannot find good ...
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22 views

Object Shows up and video doesn't

So i'm trying some stuff in blender, I made a 3D track of a scene and add an object, everything is correctly done I think . When I hit render to see how the object looks in the video, but I cant ...
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14 views

How to use grease pencil with tracking view>

I'm using the tracking view to do camera tracking from a video. I want to use grease pencil to block out a moving person in the view, but when I draw a circle around something using annotation, and ...
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All frames are the same when rendered in Evee

So I made a project where I had motion captured my face and have applied the movements through tracking and bones on my Head Object. I had followed this tutorial : https://youtu.be/uNK8S19OSmA Now ...
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13 views

Thin outline around plane and nothing renders

I followed Default Cube's advanced 3d Integration video and followed it step by step. I chose the correct frame for my material and even disabled outline in the viewport and nothing seems to work. ...
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23 views

scene ignores the object in render however view port doesn't?

i wanted to make a gun being showcased using motion tracking in Blender. However after i ran a test render i realized the object wasn't even visible so here i am to ask what the problem could be, im ...
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28 views

Text not rendering in motion track (2.82) [duplicate]

Using Blender 2.82 and I am trying to animate text over a meme template (yes, i know there are easier ways to do this but I wanted to try it in Blender to expand my skills a little bit). I have been ...
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108 views

What is causing the window coordinate vector to not project properly?

I'm trying to project a frame onto an object so it would look like a hatch is in the ground of my tracked video. Seems like the frame is a bit disproportionate. Scale of the object is applied.
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How can I add geometry to a tracked shot in 2.8

I used this excellent tutorial by Ian Hubert to track my shot. https://www.youtube.com/watch?v=lY8Ol2n4o4A I got my solve down to.2065! My square geometry was present in my 3D viewport-all good. ...
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1answer
36 views

Accessing the new rotation caused by “Track To” constraint

So after searching for quite a while how to have my camera focus some specific object while the camera moves through space I found the very easy solution of the "Track To" object constraint. This ...
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how to merge and transfer files as one piece to other blender project

I want to add my robot model to the camera image with motion tracking, but I don't know how to add the model and rig files as one piece. And the robot is walking on the stage. I have to add this as an ...
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11 views

3d model from a video and animate

I've seen people auto generate models from video and make it manually, however I haven't seen someone rotoscope from video. There are AIs getting better at this, but is there something I can use/do? ...
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20 views

VFX Shot: Dolly into blue screen picture frame that reflects

Hey Blender community, First of all. You are clearly a lovely bunch. I just dove into making my Donut, as guided by Andrew’s great tutorial series, and was delighted at what I learned. I decided I ...
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51 views

Connect points of motion tracks with (smoothed) lines

I am tracking motions with blender, and adding motion trails to tracked objects. With hq slow motion footage, just attaching an empty vert with a particle effect to my track works very well. However, ...
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22 views

Cant filter tracks when solving camera tacker

Sorry, I am a noob at Blender to be honest! I got a decent track of some footage and in the solve tab of the tracking menu, in de cleanup, I want to filter tracks. I can select it, but when I want to ...
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11 views

Is it possible to select ALL trackers? Motion Tracking

How can I select all trackers across all frames? I can select all trackers on a given frame, but that doesn't cover trackers on other frames. How can I do this?
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21 views

Face motion tracking depth/rotation tracking

I recorded a video with face markers in order to track my face movemements; i can't figure out how to make my mesh follow my emptys in order to track my face angle. Any ideas ?
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140 views

Single track with bundle should be selected to define axis

I keep getting this error when I select a point and another one to set X or Y axis when tracking. I DO have my camera solved I tried a few tutorials and I don't think I'm missing any step, yet I can't ...
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35 views

Why does my render look like this in eevee?

I am trying to workout a workflow from Boujou to blender but when I use EEVEE the cubes look messed up and start jittering and going transparent. Then in Cycles everything looks alright but I would ...
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16 views

Tracking Points not aligning with footage

After i did an object tracker, and setup my tracking scene, the track is good but the point don't align with the footage. Why ?
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The movement of the empty doesn´t match the track

If i link an empty to a track, the movement doesn´t match that well. Sometimes it´s a frame further to the left, than the track, a few frames later a frame further to the right. I´m currently working ...
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15 views

Can I save camera 3d space data?

I'm wondering, If I have a camera animation, is it possible to store that 3d information so I can have the same camera movement in another scene? Basically, have the 3d camera movement in one scene ...
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25 views

Motion Tracking + MatchMoving — What am I doing wrong?

I'm trying to track the camera in this piece of footage and then also track the object on the stick (to replace the object with a 3D object and remove the pole). I am a newbie, but I think I got the ...
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18 views

is there an easy way to delete all dead tracks?

I have a tracked out video and a lot of tracks failed. Is there a button or something to delete all the dead tracking points? It's a long process to go through and find all of them and delete them.

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