Hi Ozma,
If you have a video in a media storage site like photobucket you can copy and paste the url into the reply space here. My video is on Youtube (unlisted so only people you want to see the video can see it if you provide the url, the rest of the masses would have to be lucky to stumble on it unless you make it public) so I just clicked above the second smiley which is "Insert hyperlink" which gives you two urls in square brackets, copy the url and paste between the two urls and your video will appear.
Hope I understood you right and this helps in what you are trying to do.
Jamie