YouTube has ramped up their foreign language translation game a lot in the past year.  In September, they made it so that you could request a translator as long as you make captions for the video, and it can be done in 300 languages.  Now, you can get your video professionally translated using two main professional translating services, Gengo and Translated.net.  With them, you can now translate your English captions into 36 languages.  Captioning is great for YouTube SEO because it not only makes your video understandable to more people but the search engine can more easily tell what your video is about. More >>