I hope to add a button to switch movie trailers. All movies and TV shows are downloaded by myself. I definitely don’t need to watch trailers. I hope to add a switch. When adding movies or TV shows, I don’t need to search for trailers. And there is no need to display the trailer button on the introduction interface.
Still don't follow as there is a button to open trailer unless this is specific to a certain client?
But if I were to interpret the first post you want to hide the trailer button.
But Emby does not search for trailers, it gets the URL from TMDB metadata. And there is no way to stop that.