Don't know the situation in other countries, but most videos in my collection have all their subs inside the e.g. mkv. Thanks to the help from @Luke and @ebr I finally got a clue that in Emby external subs are much more handy than the internal because they don't need to be extracted before playback starting.
I'm referring to this two threads:
Most internal forced subs are also flagged as default. So even when the user exports internal subs, Emby still prefers the internal one flagged default and forced and the Auto subtitle settings in preferences become obsolete. This leads again to the long period until the movie starts because of the sub extracting process. Only but very long and uncomfortable solution would be remuxing all movies with forced subs (for me around 400, pretty sure a lot people have also a big amount of movies like that).
Is a setting possible to prefer external over internal subs or a switch to ignore internal subs if external is present?
Using files with exported subs without remux them all or manually choose when the stream already runs, because other tools handle internal subs well and like this we have a maximum compability for different usages of the files.
Edited by shorty1483, 06 December 2015 - 06:45 AM.