Pre-recorded audio and video into Character Animator

Is After Effects the only way you can get pre-recorded video for puppet face movement?  For now, the only way to get a puppet into my gaming videos is to record on my webcam, then upload the video and audio.  The only way I can find while searching is to use After Effects to analyze your face tracking (which takes a very very long time).

Is there ever going to be an update to where you can just do that in Character Animator?

Thanks!