Hey. Posted on forum (https://forum.serviio.org/viewtopic.php?f=3&t=28019),,) just a recap, if possible to do a profile-specific setting that would, if enable, mux subtitles that should be named the same as the movie (i presume that you do detect this, since on my previous LG they were played) mux them into new out file and then stream that file.
The command that I use now is:
ffmpeg -i movie_in.mp4 -i subtitles.srt -c copy movie_out.mkv
Having issues with Philips, but not their fault as DLNS protocil is, well, iffy, if I understand it correctly :)
Don't know how much time and trouble this would be, but I presume that quite few would benefit.
Then again, I can always do a java job to do this on all my collection :)
Thanks for your time!