Game Development Reference
rotations in the mocap data are not sufficient for your character to walk
because they have very short stubby legs that rotate in a very
exaggerated way to achieve the goals, then by forcing them to conform to
an IK target the data are tweaked to suit your model. Most mocap data are
suitable in their raw form only for characters that are similar in limb lengths
to humans. IK can provide a way out of this dilemma.
Mocap is a great way to create realistic actions. By enhancing the data the
restrictions can easily be removed from the motion and animators given
free rein to create the scenes they desire. Mocap data provide an
excellent raw resource for the animator and if handled as valuable
reference rather than always used in their raw form then these data
should be an essential part of any CG animator's armoury.