3D models are animated as objects or parts. In some cases, physics are applied to provide realistic animated simulation. The final animation is then rendered to video. Factors that impact cost include / not limited to: Data provided / 3D models provided, rigged or needs rigging, level-of detail (LOD), special effects, output size. Common examples of animated objects include vehicles / traffic, pedestrians, wind / vegetation, machinery, medical device, inventions, etc.