VrokSub is a DVD & Video software developed by vroksub. After our trial and test, the software is proved to be official, secure and free. Here is the official description for VrokSub:
Brothersoft Editor: This c# (.net) open source command line utility will automatically download Subtitles for your movies, rename your movies using a customized format, create Folders for your movies and download imdb covers and Details. You just pass a folder path and a preferred language list and it searches for subtitles using your avi files. It uses opensubtitles for the search and it requires the .net 2 framework runtimes which you probably already have. you can free download VrokSub 1.10 now.