Unreal avatar with live connection

We want a help to configure an avatar (metahuman, iclone, etc) into unreal and connect with live link or other app to make a live conversation with face, mouth. Sound will be the real person audio, avatar movement could be camera tracking or predefined saved presets of movements. The live result need to be out with a green background in 4k or 1080. Unreal 4.27 or 5. The scope is not cereate the avatar, but connect the skeletor and face with a real info.