is possible to use unreal engine api to add an automated talking avatar for a video?

is possible to use unreal engine api to add an automated talking avatar for a video? It Is in the context of a web app where I generate automated video from user text input and I also generate speech audio. I would add to the video an avatar,that could be photorealistic or not, I may create a set of avatar and for each API call define the avatar to use. That should be all automated process. Thanks.

unreal plugs into an iphone 11 or better and does face tracking with ARKit
if you want text to face anim you use the nvidia omniverse suite and there is an ai text to face anim that requires an rtx card to create anim from text.
its faster to use arkit and luppet with liv and a live actor recording onto a metahuman
but the other way works too.