I've just recently starting using the Plex app on Xbox One to replace by Raspberry Pi to play my h.264 MKVs.

For the most part I've been pretty happy except:

If a video has SRT subtiles (either in the MKV or as an external file), Plex will transcode the video stream in order to render the subtitles.

Is the any way to get Plex to overlay the subtitles without transcoding the entire video stream?

I've searched Google but have not found any answers, and I have had no response on the Plex forums to my query.

Any help would be greatly appreciated.

Thanks

Paul