Hi  
 
I have recenly been testing moving cameras and moving objects in the same Footage (similar to the animal extensions by sebastian stanek)  
 
This seems to be fine when you do the scene track first (to get camera movement ) and export this to your 3d app
 
And then track the moving object and export the scene to get rotation and movement for the object.
 
This involves 2 completely seperate match moves.
 
I was under the impression i could track the scene background as normal and create a rigid motion group for the moving object in the footage.
 
Export this once and have the complete track for both camera movement and object movement.
 
With this method I am getting an old problem i thought had been fixed.
 
The camera will move through the scene fine and there is a seperate group in my 3d app with the helpers in the correct space for the moving object.
 
But you can not link anything to the motion of those helpers. Because the track helpers move inside of the group. Which means if you link anything to that moving group it remains staionary (as the group does not move, it is in fact the helpers which move inside of that group)
 
I thought that a rigid motion group would solve this in MM3.1  
 
Or do i have to go about this by doing 2 totally seperate match moves and combine it my self in my 3d app?
 
Thanks for you help again,
 
 
Mike

Hello,
 
Currently, as you noticed, moving objects are exported as moving helper points (only translated, not rotated). So the result is different than solving the object alone and exporting it with the option "animate scene" instead of camera. This is something we plan to improve for future release.
 
Thanks

Cheers Ronald  
 
 

Hey,
 
I just want to know if I understand your process correctly.  I have not done any tracking of moving objects within a sequence but I will be.  
 
First you tracked and solved for the background and camera motion.  exported that data into your 3D app making sure to animate the camera.
 
Then you tracked and solved just the moving object.  then exported that data into your 3D app, animating the scene not the camera.  
 
Then you combine these in the 3D app.
 
Is that how it's done?
 
Jess

Exactly.... If you want to use rotations for your object. Else you can directly track both, and you'll get a cloud of moving points.
 
Bye

Thanks Ronald