Just a couple weeks ago I noticed that the audio sync on Facebook videos wasn't syncing properly with the video. Didn't think anything of it at first, but then I noticed this same phenomenon on various other sites including newsites, Vines, Vimeo, and YouTube, just to name a few. The audio sync appears to be fine with videos already on my system.
What's going on here? Has anybody experienced anything like this before? How can it be fixed?