Animation & Mesh character

IK rig to retarget Anim in UE5


Key moment:
Download the Anim pack on Epic (its mesh is old UE4 mannquin, while the reference character mesh used for retargeting is UE 5 mannquin)

Create Rig file and IK rig for targeted character:

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Use the reference UE 5 mannquin (open a default project) to check the pelvis (treat it as a core of the mesh, R click →set Retarget Root)
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Then for root, spine, clavicl, etc. R click → New Retarget Chain from Selected Bones
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Final newly added IT Retargeting chain:
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Create IK rig for old Mannequin:

Repeat the same step on old UE 4 mannequin mesh:

Use IK retargeter to Retarget the anim:

i.e. Use old (UE4) mannequin’s IK retarget as a source for the anim
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