It’s not code, just the raw XML that you can check your own media to see if it contains it. Go to any movie or show, click on a file’s triple dot menu, and choose “Get Info”. In there, a yellow link called “Get XML” will show you the raw XML data that Plex knows about the media, such as if there are credit markers, and exactly WHERE those markers are in the file’s timestamp.
Okay, so, unless they changed it, you cannot just select the show and hit analyze. Or even be on the show home screen and do so. You must do it by selecting all the episodes at once and choosing analyze.
Alternatively, try the Plex Dance on a single show, and see if Plex performs into or credit analysis when it was added. After the Plex dance, and you tell the library to scan for the file, check the heartbeat icon in the upper right corner of a web client to see what the server is doing. See if it detects the “new” show, and is generating image thumbnails (assuming they are enabled). In addition to that, Plex should also be doing intro/credit detection at the same time. This usually takes longer to complete, so is often the last thing to finish when a show is added.
