back when i started coverting mpg with kinoma and playing on the 600, surprisingly the voice and mouth movement were pretty much in sync.

later, still on the 600, the sync got way off. by 5 sec or so.

on the 650, it isnt that bad, but still noticible. but this time it looks like the voice comes half a beat b4 the mouth movement.

what setting should i look for to tweak this?