There's no way for you to upload a video (without changing it) any faster than your internet connection allows, unless you upgrade your internet. However, length and quality of the video will make a difference on the size of the file you have to upload. If you edit out what you can of your video, you can shorten it. Also, if you can make it work, you can cut the video in half and upload two different parts. If you're uploading in 1080p, you should reduce it to 720p. For me, the difference in quality is insignificant to how large it makes the file and how long it makes the render time.