My first time doing motion tracking and crowd simulation in Blender. And oooooohh BOY were there a lot of growing pains made in this one…
Some things I learned was to plan my shots ahead of time and NOT use the camera zoom if I plan to use motion tracking to make it easier.
bought the two models from the following links
Trex model: https://www.turbosquid.com/3d-models/3d-jurassic-park-tyrannosaurus-rex-blender-lowpoly-model-1726855
Gallimimus model: https://www.turbosquid.com/3d-models/dinosaur-gallimimus-ornithomimus-3d-model-1314048