If you see the "Upload failed: Duplicate upload" error message next to one of your videos, this means that the video you've uploaded already exists within our system. More details: https://goo.gl/2JcjZU . Hope this helps!
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
If you see the "Upload failed: Duplicate upload" error message next to one of your videos, this means that the video you've uploaded already exists within our system. More details: https://goo.gl/2JcjZU . Hope this helps!