Subtitle Horse is an online subtitle/captions editor. To translate a video simply put in the URL of your file (mp4, ogv, webm, flv, youtube) video and click the submit button. After you finished you can export your subtitles in different formats (VTT, SBV, timedText, SRT, Encore).
For a quick preview click here.
If you want to install the tool on your server use the contact form to ask for more information.