Which device or browser are you using? Also, have you tried the steps in this Help Center article for videos stuck in upload: https://goo.gl/gH99rS ? Keep us posted.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Which device or browser are you using? Also, have you tried the steps in this Help Center article for videos stuck in upload: https://goo.gl/gH99rS ? Keep us posted.