Runtime in Play Version popup

[DTR]

That would probably be a use case for Multiple Editions (might not be perfect for “just has an extra after-credits scene,” but I also don’t know of any movies that fit that description). There’s an existing feature suggestion for adding more details to the “Play Version” menu though, which might be a better place to cast your vote: More Info in “Play Version” - Feature Suggestions - Plex Forum.