Hi everyone, another problem that haunts me, and that I wanted to create a scene where in a video a person raises a box that is on the ground, and under there is a spider, then after the motion tracking and camera solve, I created the mask for the box, which moves faithfully with the box, so far everything ok, now when I import the animated spider, I place it behind the mask to make it look like it is under the box, but then when I start the video, also the spider gets up with the mask! I know it’s normal, because after motion tracking and camera solve, every object that is placed in the scene moves together with the “CUBE” but I need the spider to stay still on the ground, I tried with delete parent, but nothing happens, it moves anyway, I don’t know if there are modifiers, or other functions that can be attributed to the model to free it from the movements of the “CUBE” … Thanks…