Google2SRT allows you to convert subtitles from Google Video and YouTube to SubRip (.srt) format, which is recognized by most video players. You can download XML subtitles or simply type video's URL, Google2SRT will do the rest.
Please add an option for setting proxI,in place where i live Youtube is blocked Every url from youtube i paste, nothing happens. I don't know if it is a problem related to connecting youtube site or there is no subtitle for that url. (i don't know if Google2SRT can download automatically Transcribed subtitles)