I believe you are looking for a player to play the decoded output. You can use ffplay to play the bitstream and a yuv player to run any YUV's. I hope I have got your question right.
In general, Media SDK for Linux Servers is focused on headless use cases. Methods to display locally aren't a priority. The samples illustrate how to display via X11, but using this path isn't recommended for most cases because when Media SDK is initialized this way an active X session is always required. Because of this the X11 path in the samples isn't well optimized and may contain bugs -- it isn't intended to show a suggested way to implement rendering.
Media SDK works with VAAPI surfaces in Linux and there should be ways to interoperate with OpenGL. However, since this forum is focused on helping with Media SDK we may not be able to provide much help with the display component.