I understand that, I was just saying that an On/Off switch would make easier for people to test that function as it is painful to roll back and forward every time a subtitle doesn't work as my PlexConnect is for family use. With this switch, I'll be glad to give feedback with my 500 or more movies subtitles. In my case, it works with standalone SRT files but not with embedded SRT in MKV. I'll also have to test the SRT with UTF-8 and ISO-8859-1 encoding.
- PMS/transcoder did burn the subtitles into the video stream -> needed a lot of horsepower, not available on some PMS hosts (eg. NAS).
- m4v played natively (direct play) on aTV did not work with external subtitles -> you needed to "force transcode".
Now external SRT subtitle files are overlayed by aTV to the video - you don't need a full transcode any more, a container swap (direct stream) might be enough.