Remember all those Hong Kong kung-fu movies with really poor dubbing so the actors’ mouths would keep flapping after the words had stopped? That was charming. What’s less charming is the possibility of stone-faced avatars poorly mouthing dialogue, detracting ever so slightly from the immersive power of virtual reality worlds. That’s why we’re all slightly excited that Oculus released (and quietly yanked) a beta Unity plugin called OVRLipSync.
Source: Oculus Developers