Other than checking “Mirror Animation” under the Character Settings when you initially retarget data to a character, is there another way to mirror a character’s motion in MB?  Essentially I have a file that I’ve perfected through several layers of animation and now I’m looking to create a mirrored version.  I have tried merging the file from the asset browser into an unanimated character file and retargetting the animation.  But for some reason I haven’t been able to get the retargeted animation to play.  The reatrgetting seems to initially work , but the character only assumes the pose from the first frame of the animation and stops.  What am I missing here?

I am looking to speed up the production of a series of animations.  For many of them, I need to create both left and right-handed versions of the same motion.  Is there a way to mirror the animation so I don’t have to recreate each animation twice?  I am aware of the negative Scale method to flip the keys and skeleton, but unfortunately I need to preserve the skeleton’s original parameters because some of the character models have an asymmetrical design.  In addition the rig utilizes a spline IK system which, along with a few other elements, makes it difficult to transfer it to MB, which has the ability to mirror animation.  If anyone knows of a solution please let me know.
thanks,

DE

Copy the Take, check mirror, plot to the skeleton from the ctrl rig.  If you need to reorient the data, select all the keys for the skeleton in the timeline, rotate the root 180 and click move keys button on the key ctrls.

You can do this for large numbers of takes at a time to speed it up, plot all takes with mirrored on.

Brad Clark
Co-Founder: Rigging Dojo-Teaching the art and science of character rigging
Author: Inspired 3D Advanced Rigging
The Character Animator Toolkit for Motionbuilder :available now: