All Questions
188
questions
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answers
8
views
How to find the computed distortion parameters in Blender
I just did a camera solve in Blender, and I'm going to do some compositing in Fusion.
I asked Blender to solve for Radial Distortion:
Is there a way that I can get the value of the coefficient used ...
- 3,412
1
vote
0
answers
87
views
Camera tracking multiple drone shots of the same place with only one scene setup
I have recorded some drone footage of a small area in my hometown for a archviz project. I would like to add different CGI buildings into four different shots, each with a different viewing angle. I ...
1
vote
1
answer
20
views
How can I get a new marker position without changing the camera solve?
I have a motion tracking camera solve that I'm happy with and have aligned a large amount of scene geometry to. I found out I want to add a few more markers to determine where a new object should go. ...
- 113
0
votes
0
answers
6
views
Missing video file after motion tracking in VFX tab
"I motion tracked a video scene but when I re-open the file, the video file is missing (the tracking markers are still there though) How could I fix that or relink the file? Thanks"
0
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0
answers
17
views
How do I keep a camera pointed at a stationary object while moving the camera on X or Y axis? [duplicate]
So, I need the camera to stay "looking" at a particular point while I shift it on X & Y axes. It would rotate on its Z axis to keep pointed at the target.There's no animation involved, I ...
- 71
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votes
0
answers
26
views
Motion tracking with good solve error but camera is skewed
I need to do motion tracking of this vertical video and the solve error of the tracks is 0.45 (which is good enough for me, it doesn't need to be super accurate) however the camera has problems. The X ...
0
votes
1
answer
32
views
Why don't my objects remain still in my camera footage despite having good tracking?
Good day, I am having an annoying issue with Blender's tracking. I am trying to motion track footage, and every time I do it, I get a low Solving number of below 0.5 Px. Despite this, every time I set ...
- 1
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votes
0
answers
22
views
How to sync image plane with camera movement?
I did a footage with a crane in front of a green screen, where the camera points vertically down to the actor lying on the floor. He then stands up, while the camera goes back, while rotating 90 ...
0
votes
1
answer
25
views
Project from view continuously
I think this question has been asked before:
Unwrap project from view for each frame automatically
But it was never answered so I thought maybe I'd try my luck again. If you want to project footage ...
- 123
0
votes
0
answers
18
views
Camera with "track to" empty goes insanely fast
It's hard to see with the GIF but the camera stutter.
I've tried to apply the scale on both empty and camera, nothing changed...
However if you have more ideas on how to track the camera in a smooth ...
- 1
0
votes
1
answer
210
views
Is it possible to make multiple camera solvers for motion tracking in one project?
I have a video with many switching angles on one object. Sometimes the object should be outside the camera view. I need to have at least 5 camera trackings to properly insert this object into the ...
- 1
0
votes
0
answers
38
views
Live tracking of an object in 3D space
I'm not new but I'm already a beginner.
I'm posting a new question because I was wondering if there is a method to live-track the position of an object in tridimensional space.
I would like to use an ...
- 1
0
votes
0
answers
17
views
my camera track stops tracking before reaching the last frame of my video
I am trying to track found footage of a drone shot, the camera movement is very smooth. My pattern size is 40, my search size is 100. The track stops tracking around 3/4 of the way through the clip, ...
1
vote
0
answers
57
views
Struggling to track a circling drone shot
I took that shot from pexels to track and integrate an object inside of it
(cylindric structure in the middle)
My solve error being a bit below 4, I tried doing a camera motion solve.
I keep getting ...
0
votes
0
answers
24
views
Camera tracking footage rendering as black
I am trying to learn camera tracking to include 3D assets to filmed footage. When I activate rendered view mode everything is black other than the 3d objects. I also can't seem to make the ground ...
2
votes
0
answers
90
views
Shifting the frame range of a Camera track
I'm having a issue with getting the camera track to work properly once the frame ranges have been shifted.
The situation is, I have been given a shot to track (for the example lets say its 400 frames)...
- 76
1
vote
1
answer
102
views
How to make 3D airplane-like camera movements - especially with regard to "rolling" of the camera?
Right now I'm doing this as follows:
There is a path the camera position is constrained to. The camera is being moved along that path.
The camera has got a TrackTo constraint and is always targeted ...
- 89
0
votes
1
answer
363
views
Camera Tracking - Fast camera move
Fairly new to camera tracking. I did a camera move that goes from the ceiling to the floor and I'm not able to get a camera solve to work. Camera trackers only last so long as when the camera moves ...
- 31
-1
votes
1
answer
29
views
How long does the RAM continue to hold Prefetching for whilst motion tracking?
I looked through similar questions but can't really find anything on it.
When you prefetch a video in motion tracking, it stores it on the RAM for quick access, that bit I get.
My question is, how ...
1
vote
1
answer
32
views
Problem with flatbed cameras
2]2I am new to blender, I am currently doing a camera tracking on a bezier. But the problem is that when I choose the target for the camera constraint it becomes flat. And the view does not render ...
- 11
2
votes
1
answer
33
views
Is there a function that acts like a camera in the viewport?
The example is a car on a highway. Keyframed at 2 points and a camera parented to the car. When viewing from the camera the car is in frame. When viewing from the viewport the car flies by.
Is ...
- 41
0
votes
1
answer
48
views
Why are my camera tracking markings not in view of the camera?
When I solve camera motion and set up tracking scene my camera does not point at the tracking markers. It also shifts the picture in the camera view down for some reason. The picture is not clipped in ...
- 11
0
votes
0
answers
130
views
Viewport rendered camera differs from rendered camera, which is like fish-eye
I have scene motion tracked. Can't understand why rendered image (like fish-eye lens) differs so much from rendered picture in viewport mode?
- 1
0
votes
1
answer
130
views
Subtitute 3D Object Texture in After Effects
Imagine a 3D animation of an open book surrounded by a hugely complex scene, with the camera slowly approaching and/or orbiting it in multiple different trajectories made to flow into each other to be ...
- 25
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vote
0
answers
141
views
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 ...
- 11
1
vote
0
answers
55
views
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 ...
- 1,077
0
votes
1
answer
306
views
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 ...
- 1
0
votes
0
answers
121
views
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?
- 193
0
votes
1
answer
138
views
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.
...
- 101
0
votes
1
answer
173
views
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 ...
- 193
1
vote
1
answer
110
views
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 ...
- 1,077
0
votes
1
answer
52
views
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 ...
- 1
0
votes
1
answer
3k
views
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 ...
- 570
2
votes
1
answer
662
views
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!...
- 23
0
votes
0
answers
26
views
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 ...
1
vote
1
answer
391
views
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 ...
- 115
1
vote
0
answers
25
views
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 ...
- 1,378
0
votes
3
answers
248
views
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 ...
- 1
1
vote
1
answer
78
views
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. ...
- 345
0
votes
0
answers
106
views
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 ...
- 345
2
votes
1
answer
117
views
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 ...
- 99
3
votes
1
answer
312
views
How to Import Nuke (.chan) format in blender?
I am trying to import the Nuke camera track in the Blender with .chan format. But it's not perfectly imported.
It shows a very small on-grid and perfectly tracks, but the same camera fully tracks in ...
- 31
0
votes
1
answer
58
views
Boujou to Blender - Pointcloud into nulls/empties?
I managed to successfully track my scene in Boujou and to import into Blender. The problem is that it is a single pointcloud file. I need the points to be nulls so that I can send objects to them in ...
- 45
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vote
0
answers
252
views
Oculus Quest 2 controller 3D tracking data to blender camera?
I was doing some 3D green screen virtual production and I was not getting very clean 3D tracks so my shots didn't look super good.
I was wondering if it was possible to attach a Quest 2 controller to ...
- 11
1
vote
0
answers
410
views
Scene disappears when I set origin in camera tracking
I have a video that I applied camera tracking to, i.e. added the markers and solved. I get a nice solve error of 0.22. The I try to set origin to the scene. The camera then completely disappears and ...
- 11
1
vote
0
answers
36
views
Camera solve, align the 3D space with the footage
I'm adding the 3D object into the footage I shoot, after camera solving I got error 0.28px which is pretty good, then I want to check if the angle is correctly aligned with my footage so I put a long ...
- 537
1
vote
0
answers
37
views
Trackers don't line up with tracking
i'm making a vfx project in blender and with a solve error of only 0.28px the trackers don't line up with the tracking dots in the viewport.
here's an example-
- 11
0
votes
0
answers
63
views
How do I track the camera while knowing the specs of the camera?
I'm currently tracking footage filmed on a Mavic Pro drone camera. I have all of the specs of the camera, but I'm not sure how to include it into my track. It's also an extremely easy track because ...
1
vote
0
answers
198
views
3d tracking vertical video not working
For some reason I cannot 3d track footage in blender that is shot vertically (1080x1920). I had an idea to rotate the video to landscape (1920x1080) and see what happens. Sure enough, it tracks ...
- 21
0
votes
0
answers
247
views
How do I append camera with camera track animation
I want to append the camera that had animation on it (because of a 3D camera track) to a fresh 3D scene. How do I do this? When I append the camera into the new scene, it has no animation.
- 1,378