Are you running into an issue getting a video uploaded? This often happens because the video is too big for your respective bandwidth.
In this situation, you will typically see that the video will partially upload but then doesn't continue. It may seem like your video is trying to upload for hours.
Perhaps you will get the error: HTTP 413: Request Entity too Large.
There are two possible solutions:
Edit your server settings to allow for larger uploads
Break your video file down into smaller segments