Recommend the iSkysoft Video Converter Ultimate for you.
It is the combination of Video Converter, DVD Ripper, DVD Burner, DRM Remover, Video Downloader/Recorder and File Transfer. It is an all-round solution to satisfy your multimedia demands like video downloading, recording, and converting, or DVD burning, ripping and so on.
So it not only can help you download videos from facebook, also can convert/edit the video for your iphone, ipad, ipod. you can download it here:
hope my answer is useful for you, good luck.