This media player supports UPnP DLNA, can be played as a DMR (digital media renderer). It can open files via SAF (Storage Access Framework) which moderated by users.
It supports HDR content, MKV chapters navigation, frame by frame stepping, audio track selection and delay, subtitles selection and time offset, and frame rate displaying. Able to playback Dolby Vision MKV on NVidia Shield TV 2019. Videos can be rotated on demand.
It is designed for segmented files playback. They are presented in m3u8 (HLS media list) format, which is originally designed for TS only, but they can be mp4 or flv files now.