youtube-dl is a small command-line tool to download videos. While it originally and still is used for YouTube.com, it supports many other video hosters like Anitube, Appletrailers, Archive.org, ARD, Arte, Blinkx, Bloomberg, CBS, clipfish, CollegeHumor, ComedyCentral, Discovery, dropbox, eHow, flickr, FranceTV, Google+, GorillaVid, Internet Video Archive, justintv, KhanAcademy, liveleak, MTV, MyVideo, NBC, Newstube, novamov Slideshare, SoundCloud, Southpark, Steam, SyFy, Veoh and Vimeo. It can save video MP4s and other provided formats or just extract audio tracks.