NPC lip movement differs from original engine
NPC lip movement differs from the original engine. I haven't looked into it in depth but I noticed the issue with the guard who walks you through the ship in the opening.
Attached photos are about at the point where the guard's mouth is at its widest. The difference may not be as noticeable with other NPCs, like the dark elf in the very beginning.
#4 Updated by Chris Robinson about 1 month ago
Might also want to look in [url=https://github.com/OpenMW/openmw/blob/master/apps/openmw/mwsound/loudness.cpp#L12]this function[/url] which calculates the "loudness values" used to open the mouth. We currently take the root mean square of a chunk of audio samples to produce the loudness value, but this may not be the optimal way of calculating how open the mouth should be.