b-in-3d
10-28-2010, 10:07 PM
Hey all,
I'm having a pretty frustrating problem with MotionBuilder, this could be because I am new to the software, but I feel as if I'm doing everything right... I've tested my method on two separate filmed sequences, and get the same results both times. Hopefully someone can help me, as I would really like to learn from this and be able to successfully match move 3d with live action for future projects.
So, I am trying to add a basic polygonal cube to live action footage that I filmed of a counter top at my house. I hand placed 20 trackers within MotionBuilder, all showing a successful green track, with the track not jumping off the objects at all. I set up my MotionBuilder scene following the "Lesson 2: Using supervised tracking tutorial found in the help file of MotionBuilder. I go through all of the steps properly, except for setting up the Coordinate System, I kept that at default and it looks fine within Motion Builder. (But, I have tried extensively messing with the Coordinate System to try and fix the problem, but I either can't get it to work, or that isn't the problem.)
When I place a primitive on the grid within MotionBuilder, it *perfectly* moves with the live action footage. The camera moves properly as well. Everything seems as if it should export into Maya and work properly, but it doesn't. When I open my scene in Maya, I play through the footage (adding another Cube in Maya for the to be rendered geometry), and while everything seems ok as the action *seems* to mirror what was coming out of MotionBuilder, it just isn't the case. After combining my cube render from Maya, and my initial live action image sequence in Nuke, the camera shakes are off and and the footage doesn't move together properly. The rotation and general movement of the cube with the background seems correct, though.
I've tried to:
-Smooth the camera's curves within Maya, to get them less jittery, but I don't think that is the problem.
-Smooth the camera's curves within MotionBuilder.
-Stabililze the footage together in Nuke, but I think I am doing that wrong and can't get the proper results. I placed two trackers on my background footage, and tried to apply them on a stabilizer node with the rendered footage with no luck.
-A bunch of other little things I can't think of right now...
Is this a problem with my Coordinate system within MotionBuilder? My camera within Maya? Am I not setting something properly within MotionBuilder before exporting? AGHHH!! What could it be?!?
(http://forums.cgsociety.org/)
I'm having a pretty frustrating problem with MotionBuilder, this could be because I am new to the software, but I feel as if I'm doing everything right... I've tested my method on two separate filmed sequences, and get the same results both times. Hopefully someone can help me, as I would really like to learn from this and be able to successfully match move 3d with live action for future projects.
So, I am trying to add a basic polygonal cube to live action footage that I filmed of a counter top at my house. I hand placed 20 trackers within MotionBuilder, all showing a successful green track, with the track not jumping off the objects at all. I set up my MotionBuilder scene following the "Lesson 2: Using supervised tracking tutorial found in the help file of MotionBuilder. I go through all of the steps properly, except for setting up the Coordinate System, I kept that at default and it looks fine within Motion Builder. (But, I have tried extensively messing with the Coordinate System to try and fix the problem, but I either can't get it to work, or that isn't the problem.)
When I place a primitive on the grid within MotionBuilder, it *perfectly* moves with the live action footage. The camera moves properly as well. Everything seems as if it should export into Maya and work properly, but it doesn't. When I open my scene in Maya, I play through the footage (adding another Cube in Maya for the to be rendered geometry), and while everything seems ok as the action *seems* to mirror what was coming out of MotionBuilder, it just isn't the case. After combining my cube render from Maya, and my initial live action image sequence in Nuke, the camera shakes are off and and the footage doesn't move together properly. The rotation and general movement of the cube with the background seems correct, though.
I've tried to:
-Smooth the camera's curves within Maya, to get them less jittery, but I don't think that is the problem.
-Smooth the camera's curves within MotionBuilder.
-Stabililze the footage together in Nuke, but I think I am doing that wrong and can't get the proper results. I placed two trackers on my background footage, and tried to apply them on a stabilizer node with the rendered footage with no luck.
-A bunch of other little things I can't think of right now...
Is this a problem with my Coordinate system within MotionBuilder? My camera within Maya? Am I not setting something properly within MotionBuilder before exporting? AGHHH!! What could it be?!?
(http://forums.cgsociety.org/)