Well, if Mediafire isn't capable of handling those links then there's nothing you can do about it. That doesn't mean that there's no solution. The obvious one would be to download the file and upload it manually to Mediafire. You could also contact MediaFire and ask to add support for these kind of links.
Since that's probably not what you want, you could also use services that download the video for you onto their servers and provide you with a new, Mediafire-friendly link. There are plenty of those. Just google for them. Usually, RapidLeech-based servers support this feature.
Oh and cool video :)