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Export Camera Tracker to Blender

Moderator: SecondMan

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Icekender
Posts: 10
Joined: Tue Oct 08, 2019 3:01 am

Export Camera Tracker to Blender

#1

Post by Icekender » Sat Dec 21, 2019 8:10 am

Hi,

does anyone have a good workflow for exporting the camera tracking data into Blender?

Right now I am doing the following which leads to useless results.

1. Camera Tracker - Track --> Solve (really good solve 0.66)
2. Add a FBX Exporter Node
3. In Davinci Resolve 16.1.xx I hit Render all Savers (Fusion Tab)

I import the FBX into Blender but:
- Point Cloud is missing --> really important for reference
- Scale is tiny (I am now scaling it inside Blender FBX import)
- Camera is pointing 180° into the wrong direction ?!

Does anyone have a good solid workflow?

Thanks Guys!!

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m13i
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Re: Export Camera Tracker to Blender

#2

Post by m13i » Wed Feb 19, 2020 1:11 am

Blender have awesome camera and object tracker, do you really need this workflow ?

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Midgardsormr
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Re: Export Camera Tracker to Blender

#3

Post by Midgardsormr » Wed Feb 19, 2020 6:56 am

Prior to
Icekender wrote:
Sat Dec 21, 2019 8:10 am
- Point Cloud is missing --> really important for reference
You can't export the point cloud directly, but you can use the Replicate3D node to put a small bit of geometry on every point, and that will export. If all you need it for is reference, then that should be all you need to do. If you were going to hang something on the point cloud in Blender, though, you'd probably need a script on the other end to convert the geo back into locators.
- Scale is tiny (I am now scaling it inside Blender FBX import)
Try a Transform3D node right before the FBX Exporter and scale the entire scene up there.
- Camera is pointing 180° into the wrong direction ?!
That one I'm not sure about. I suspect Blender's Z axis is inverted with respect to Fusion's. If the camera is rotated 180 degrees, then all you'd need to do is add 180 to the Y keyframes. But if the scene is reflected, that won't work. In that case you could try setting the Z Scale in a second Transform3D node to -1.

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tstone
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Joined: Thu Apr 19, 2018 9:22 am

Re: Export Camera Tracker to Blender

#4

Post by tstone » Thu Feb 20, 2020 3:07 am

For fixing the camera's rotation, try adjusting the "Delta Transform Scale" in the Object Properties of the camera. I had to deal with this a few days ago but I'm not able to remember or replicate the exact steps...

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gez
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Re: Export Camera Tracker to Blender

#5

Post by gez » Thu Feb 20, 2020 5:19 pm

Blender's coordinates system is rotated 90º on the X axis: Z points up, Y grows to the back of the 3D space, away from the viewer (considering Fusion's default 3D layout).
Are you sure it's 180º and not 90º?