1) Would it be possible to launch the XBMC subtitles script from the video list ? This way, the process could be faster.
2) It's maybe simple for many users, but I struggled to add a shortcut to open the script with just one key (h in my case), so I'm posting it for users who might be interested.
In the keymap.xml file, write this:
@Redsandro This is not the perfect solution, but it will save you a couple of clicks when you download subtitles!
Also, a great missing shortcut to adjust subtitle offset with the letter "Q":