MotionBuilder is a professional 3D character animation software produced by Autodesk. It is used for virtual production, motion capture, and traditional keyframe animation. It was originally named Filmbox when it was first created by Canadian company Kaydara, later acquired by Alias and renamed to MotionBuilder. Alias in turn was acquired by Autodesk.It is primarily used in film, games, television production, as well as other multimedia projects.