Sometimes the trailers from Plex’s extras aren’t good. They may be low-quality/wrong aspect ratio, or “coming soon to home video” type trailers and not the original theatrical ones. Or maybe we want to use the “teaser trailer” instead of the full trailer.
I don’t know about linking to YouTube, for the reasons you mentioned, but I would like to be able to override the dedicated trailer button on the pre-play screen to go to a local file instead of the Plex-provided trailer. Like, it could just be a “hidden” extra. Ex: You add the desired trailer file named specifically “Main Trailer-trailer.mkv” and it doesn’t appear at the bottom with the other extras, but it plays when you hit the “Trailer Button” on the pre-play page.
