Why is Plex identifying SD video as 576p?

@Elijah_Baley said:
I, too, do not see why this matters. If Plex plays the media correctly then what it says about the media is ultimately meaningless. I watch media I do not obsess over it.

I agree that it doesn’t matter with respect to playback but it does matter. First, it’s incorrect. When users are presented with data they know are incorrect they begin to lose trust in the application. If you want a real world use case, how about this:

I’m looking for a list of movies I ripped from DVD because I’m considering buying a blu ray version to replace it. My instinct would be to search for 480p videos since they are encoded as 480p. If I do that I won’t find any. Instead I have to know to go look under 576p. Now, if I didn’t know about this bug, why would I know to do that? I’d be confused as to why my videos weren’t showing up. If I then went looking for a specific video I already knew was 480p and saw it as 576p I’d wonder what was going on. Is my database messed up? Is Plex misinterpreting my content? Is something else going on?

Ultimately, plex is getting it wrong and while perhaps it isn’t the most severe bug it is a very visible one and so deserves some attention, especially since it is a regression. Plex used to get this correct.