Ability to adjust subtitle offset on AppleTV
Sometimes the subtitles that are automatically-downloaded are slightly different (e.g. "previously on..." is included in one but not the other). In that case, one would want to adjust the subtitle offset. There should be a way to do this while watching on an AppleTV. A non-technical user will not be able to adjust the sync on the subtitles, plus it's hacky and a bad user experience ("give me 5 minutes while I log onto the headless media server and adjust the timing on the subtitles").