The addon script is ue4-neuron-mapper.py. Only tested with 2.7.
You need to enable the addon as per usual along with UE4 Tools, and then once you have a model loaded and parented to the UE4 rig, and an Axis Neuron animation imported, it should be fairly easy to use. There is a "Bake Animation" control in there somewhere that should bake the animation out to an animation strip. I think you have to specify the name of the source rig (ie. the raw skeleton data imported from Axis Neuron), and there are buttons to enable/disable transferring finger/foot data as well.
I haven't used it in a couple of years however, so if it doesn't work feel free to hit me up with questions. It was just a quick hack, very rough and ready. No warranty :-)
Also any patches which improve the accuracy of the retargeting (hands can still be a problem in general) are very welcome!
This quick test clip I did the weekend I wrote it demonstrates the current quality of the retargeting, although it is rendered in Blender and not UE4:
EDIT: it is also worth noting that I believe the Perception Neuron people released a new version of their UE4 plugin a week or two ago. It might be worth checking out yet whether they have improved the workflow or not since the previous version. I wanted the ability to edit the animations directly in Blender and so I wrote this plugin.
You need to enable the addon as per usual along with UE4 Tools, and then once you have a model loaded and parented to the UE4 rig, and an Axis Neuron animation imported, it should be fairly easy to use. There is a "Bake Animation" control in there somewhere that should bake the animation out to an animation strip. I think you have to specify the name of the source rig (ie. the raw skeleton data imported from Axis Neuron), and there are buttons to enable/disable transferring finger/foot data as well.
I haven't used it in a couple of years however, so if it doesn't work feel free to hit me up with questions. It was just a quick hack, very rough and ready. No warranty :-)
Also any patches which improve the accuracy of the retargeting (hands can still be a problem in general) are very welcome!
This quick test clip I did the weekend I wrote it demonstrates the current quality of the retargeting, although it is rendered in Blender and not UE4:
https://www.youtube.com/watch?v=DdA8Z56X768