I'm trying to fully record animation in iClone 7. I have the face and hand plugins, but no fancy suit. I do have HTC Vive Trackers, though. Is there any way to connect them to iClone? If not, can anyone think of a workflow where I can record all of the animation in 1 take (even if it takes another piece of software) synced up? I can also live link into Unreal.

It is currently not possible directly, but it has been requested:

See here: https://www.reallusion.com/FeedBackTracker/Issue/Motion-Capture-using-HTC-Vive.

What you would need is a way to record the motion and export it is an FBX file. You can then import that via 3DXchange. 

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One possible way is to use Glycon3d to record the motion and then applied mocap file (fbx) to iclone.  I had installed the software in Quest2 and it works.  Recently, Glycon3d introduced iclone skeleton and this would be much easier to adopt for iclone.