First of all, you need the video on a file in your computer. Then, you need it in a format that Photobucket will tke such as an AVI. file or a MOV. file. Then, you need to put it in a file size that can be transferred over the internet easily, like a mpeg 2 or mpeg 4 file size. You then go on Photobucket and hit the video upload icon. It will ask you what file to use off of your computer. You line up the filke and it will upload it automatically. Many new camcorders come with software that will do the first few steps for you automatically. All you need to do is upload the video to a file on your computer, then have the Photobucket site upload your file to their site.
It may sound complicated to start out but it is easy. I have uploaded many videos to Photobucket, YouTube, and other video sites.