Update: we fixed what's causing this, so any new video uploads won't experience the same frozen, out-of-sync audio issue. If you've been waiting to post–go for it! We're now in the process of fixing all impacted videos, which will take a bit more time. Appreciate your patience!https://twitter.com/TeamYouTube/status/969298199658733568 …
We've confirmed there are no related technical issues. Your sub count may have changed for one of these reasons: https://goo.gl/6B1Eb6 . If you notice anything else, let us know!