[Request] How can I rip Viki subtitles?

ginko Wrote:You can get those subtitles easy by using web developer firefox plugin.
Screenshot:

http://prntscr.com/3bjhs7

Haha, I think I'm gonna lose my mind. I dunno if I'm doing something wrong or something, but I can't seem to catch the subtitles using this method, despite trying numerous times. It's sendin' me loco =P