If you spend any time scouring the Internet for videos of any kind, you’ll find that there are loads of different video sites that serve a number of different purposes: YouTube, Vimeo, Dailymotion, etc. Sometimes you’ll come across a particular video that you want to save for later. For the popular sites, e.g. YouTube, there are many downloader tools available. And then you have sites, like TED, that use their own web video formats.