GStreamer
GStreamer supports a wide variety of media-handling components, including simple audio playback, audio and video playback, recording, streaming and editing. The pipeline design serves as a base to create many types of multimedia applications such as video editors, transcoders, streaming media broadcasters and media players.
It is designed to work on a variety of operating systems, e.g. Linux kernel-based operating systems (like Enigma2), the BSDs, OpenSolaris, Android, macOS, iOS, Windows, OS/400.
GStreamer is free and open-source software subject to the terms of the GNU Lesser General Public License (LGPL)[5] and is being hosted at freedesktop.org.
OpenPLi and GStreamer
GStreamer is native in OpenPLi meaning it's already in there when you installed OpenPLi and when you view a recording you will be using it. Although GStreamer is highly flexible a setopbox is not designed to be a media player. You can use it as a media player, but there may be problems.
Subtitles
It's is always recommended to mux subtitles into the container. To mux means to combine different things (like a video stream, audio stream, or subtitle) into a single container media format, like MKV, AVI, etc. When you have muxed subs, that means the subtitles were externally added to the media container you have.
Tools to mux subtitles
A tool that does this very nicely is MKVToolnix and can be downloaded from https://mkvtoolnix.download/index.html/span>
OpenPLi and GStreamer versions
OpenPLi 4 with GStreamer 0.10.x
OpenPLi 5 with GSstreamer 1.x
