SubDownloader is a lightweight program to automatically download/upload subtitles for video files. It provides a clean interface which lets you find matching subtitles for your movies in just a few steps.
Among SubDownloader useful features are:
Subtitles language auto-detection
Ability to play videos directly using an external player
Fast indexing algorithm
Subtitles upload support
SubDownloader is a cross-platform application. To install it on Ubuntu, you need to add the following ppa to your Software Sources: