Extremely obscure bug?

I have Plex Server on 2 computers in my house, don’t ask why, it’s complicated, suffice to say, 2 computers.

Both computers point to \NAS\MOVIES
Both computers use the same NAS account and have the same file permissions.
One showed 2091 films, the other 2089, I tried emptying the trash, re-scanning, etc - no dice.

I ended up deleting both libraries, entirely and re-adding them and clicking every.single.option.identically for them (localized titles for example)
Here’s the problem.
When the scan completed, I was again presented with, 2089 files vs 2091.

I discovered that the 2 issues were the following files.
The Making of Its a Wonderful Life Its.a.Wonderful.Life.(1946) .mkv
&
Let There Be Light - The Odyssey of ‘Dark Star’ (DVD extra).mkv

One computer, successfully identified these as
“The Making of It’s a Wonderful Life” & “Let There Be Light: The Odyssey of Dark Star”

The other computer simply said that the film Wonderful Life and Dark Star have /duplicate copies/ (incorrectly identifying the extras as the movie, again)

I can understand how this could occur but not on the SAME VERSION of Plex, with the same options ticked in the library identically and a fresh scan done? Why would one identify correctly, the other not?

Baffled.

When dealing with items which are not named according to the naming guides, seemingly minute details may move the pendulum of the Plex movie matching heuristics.
These minute details can include the operating system of the host computer or even the version of some system libraries.

Both your example videos are better treated as local movie extras.

Are your agents for that library listed EXACTLY in the same order with the same options checked on both servers?

@cayars said:
Are your agents for that library listed EXACTLY in the same order with the same options checked on both servers?

It took me a second to understand what you mean.
I have 2 folders that make up the contents of the library - those are in the same order

Also under settings, advanced, server, agents - there’s very few installed for movies and they do appear to be identical in quantity and order.

@OttoKerner said:
When dealing with items which are not named according to the naming guides, seemingly minute details may move the pendulum of the Plex movie matching heuristics.
These minute details can include the operating system of the host computer or even the version of some system libraries.

Both your example videos are better treated as local movie extras.

I appreciate your response and while I guess there’s some logic to it, ultimately it is also, ridiculous (not you, Plex)
Both computers are set to my correct language and region, regardless of that, it shouldn’t impact the scanning - a file is a file is a file and if it’s named X on one machine (and since it’s on a NAS) - it’s also X on another. It should be then passing to IMDB or whomever “X, what is it?”
The fact it can match 2089 perfectly and screw up 2 is baffling.

It’s not a big issue, it’s more of a “I don’t like inconsistencies in software, what else is busted?”

Can you post the XMLs for one of these videos from both servers?

Where are the XMLs located?

Oh, that article needs to be updated. The image is wrong. Find the “…” either by hovering over the poster or at the top right when viewing the details.

Give me about 90 minutes and I’ll organise it.

Ok so when I first made this entry on the site, it absolutely was broken and did as I described.
Before anyone replied to this thread, I cracked it and just deleted the 2 files.

I’ve since replaced the files, to try and bring the bug about again.
I then removed, re-added library and re-scanned on both machines and low and behold it’s working.

So sadly I have no real evidence to provide accept my anecdote on an obscure thing which happened once :confused:
It’s not ideal but little I can do - I’m guessing this can be closed off, unless someone else has seen oddities with ‘extras’ getting marked as duplicates?

My guess is that different server versions were used at some point to “import” the files. If one version had an issue while a different version on the other machine didn’t that could explain it.

If however you do the plex dance on both machines with the same server versions then you would think you would get the same results!