Thanks for reaching out. What device are you using to upload the video? Also, here's an additional guide on videos taking a longer time to upload/stuck during upload: https://goo.gl/yGeYve . Let us know if this helps.
@TeamYouTube got a video stuck on 95% processing for an hour + how’d I sort this?
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.