I've been reading tutorials and guides on getting video file playback in Unreal. I have media player materials created and textures. I'm having issues importing video files to Content/Movies directory. When I use the import manager the files don't show. Drag and drop says its an unknown file extension for MP4, MWV, and other formats I tried like AVI even though I know AVI is not supported. So I wonder if maybe I'm missing a plugin for Unreal 4.8 / 4.9 in Linux?