http://thenextweb.com/insider/2015/03/25/facebook-
Post# of 96879
Uploaders can also now add custom thumbnails for videos – nifty if the preselected one doesn’t quite represent the content properly – as well as subtitles for different locales .(CHINESE?, INDIAN LANGUAGES?,)
Finally, Facebook says it’s made uploading faster , and for longer clips, admins can subscribe to real-time updates on encoding progress.
This Sounds like NTEK to me from this
Keep digging to confirm this will be one of the biggest game changers in ad markets.