OK, digging through the latest profile on the plex paid channel, i see on the server that the tvOS.xml has been changed sightly..
<!-- Allow Direct Play of HLS content -->
<VideoProfile protocol="hls" container="mpegts" codec="h264" audioCodec="aac" />
It got me thinking, what is the easiest way to say muxing a mkv into a mpegts..
currently using ffmpeg
ffmpeg -i example.mkv -codec copy -vtag hvc1 -map 0:0 -map 0:1 out.mp4
I noticed in the docs it says this ffmpeg.org/ffmpeg-formats.html#mpegts-1
which leads me to believe you need to mux into a mp4, first then into a mpegts..