Hi Luke, softworkz, I created this topic to give my feedback about the subtitle extraction process that Emby runs when on-the-fly extraction is activated. I ran into this old issue yesterday and dig a little deeper this time. This is what I discovered and wanted to share with all of you guys.   In fact, when running the iOS app with subrip choosen, Emby tries to extract embedded subtitles and send it to the player like you know. But for some mkv, the subtitles are not locate