The case is different in dotSUB for you can add your own subtitles to videos you upload by yourself and then share them with your friends and colleagues. Teachers and educators can use this service to share interesting content made primarily in other languages.
You can also browse the directory of videos already available in dotSUB. Most of the popular videos in this website are already translated into different languages. Just select the language you want and there you go.
Here is an example of a video made by dotSubt