The Unreal Engine team introduced MetaHuman Animator, a new feature set that lets you use an iPhone or stereo helmet-mounted camera to reproduce any facial performance as high-fidelity animation on MetahHuman characters.

https://www.unrealengine.com/en-US/blog/new-metahuman-animator-feature-set-to-bring-easy-high-fidelity-performance-capture-to-metahumans
https://www.unrealengine.com/en-US/blog/dive-into-epic-s-announcements-from-gdc-2023