I just installed Emby on a Windows system and added several libraries. Somehow one of the libraries received an auto-generated a poster (or primary) image with a tile of several movie posters. It was very nice, but I have no idea why this happened only to one library. Is there a way to do it for all libraries (I can re-create them if needed).
Also, is there a way to generate poster images for videos that are not movies, TV series, etc? Like, say, home videos or custom tutorials? It generates a poster for each file (I assume from some random video file snapshot), but how do I get them for the series or seasons?