Scanning library overwrites custom metadata of existing films - please help

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Hi,

I’ve tried to find an answer to this on the forum but I haven’t so far. If anyone has ideas, I’d be very grateful for some direction.

I have Plex Media Server on my PC and add my movies to it. I manually enter some metadata including titles and movie posters, but every time I rescan after adding other movies, a random number of my already present movies are ‘re-added’ and have original metadata populated.

This is really annoying and frustrating - I don’t know why it is happening and I always ensure that the metadata padlock icon is lit up but it doesn’t seem to make a difference.

Does anyone know what I’m doing wrong and how I can fix it, please? It’s such a frustration that I’m running out of patience with Plex as a result.

Many thanks for any and all help!

Embedded Titles in your MP4 files?

Do this:

You should now be able to edit safely.

Hi,

Thanks for your advice. I shall give it a go and report back if there are any problems.

Thanks again.

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Unfortunately, I followed these instructions to the letter, and Plex is still randomly ‘re-adding’ films I already have and overwriting my metadata and posters.

I’m not quite sure why Plex bother to put the ‘metadata padlock’ function in the program when clearly it has no more use than a chocolate teapot?

If your files are ‘Unmatched’ - or loaded with bogus Metadata - locking those fields does nothing.

When Plex scans and finds ‘Unmatched’ or is preferring Bogus Metadata that ‘Unmatches’ your show - you’re done.

Do the LMA Hack across the board - Shows and Movies - ALL Tabs.

Make sure your file names and structures are ‘Pristine’:

https://support.plex.tv/articles/naming-and-organizing-your-tv-show-files/

TV Shows are the most dependent on proper names and structures.

Once you get all that right - Plex Dance:

ALL Steps - In Order - or it won’t work.

Let’s see an example.
What kind of library are we talking about?
Can you give an example of the actual kind of content? (cinema movies, tv movies, music videos, documentaries, video courses etc. pp.)

Geez… An LMA hack and then a Plex Dance…?

All I want is for it to actually carry out the function of the lock metadata button on the window for the film and lock the metadata field.

If it can’t do it, why is it there? It shouldn’t require a long-arsed Plex dance, tango, or any other kind of waltz - the option is there so why doesn’t it work?

For info, all of the file names of my films are EXACTLY, and with no exceptions: Film Name (Year). They are also all fully matched before I do anything to the metadata fields myself.

What I wanted to do, among other things, was try and make the film title readable on Plex - i.e. Where the original name is “CAPTAIN AMERICA: THE WINTER SOLDIER” in the Title box, I want to shorten it to “WINTER SOLDIER” because Plex doesn’t cater for film titles more than two words long and cuts them short on the display.

Secondly, for personal preference, I wanted to rename certain ‘Sort Title’ fields, e.g. CAPTAIN AMERICA is the ‘Title’ of the film, but have the ‘Sort Title’ field as MARVEL.

By doing this I can create my own collections within the overall film list that are more aesthetically pleasing than Plex’s own attempt at collections.

Across several attempts to overcome this whole issue, I have on numerous occasions completely uninstalled Plex and erased every instance of it from my system to ensure that no cached data is left. I regularly clear out the trash and optimise my database.

I also move film files back into the movie folder no more than ten to fifteen at a time so I can check what is going on, as sometimes Plex can ‘forget’ a film that has already been added before, when doing a library scan.

I also need to point out that Plex’s interference with the custom metadata in locked fields is totally and absolutely random.

On any given scan of library files, it may not erase locked custom metadata from any films.

Then on another library scan, it may suddenly select ten or fifteen random films and overwrite some or all of the locked metadata.

I will then have to go back and re-edit and re-lock the metadata fields.

Then on another scan it may not erase any locked metadata again, but then on a further library scan it will pick a completely different set of films from when it first interfered with locked fields, and reset those.

It also does this on film portraits that have been set as different from the ones that Plex chooses when it first matches the film.

If anyone can please solve this incredibly frustrating issue for me, I would be eternally grateful.

If it is indeed that Plex just doesn’t like you renaming, or changing any data associated with a film, including the picture displayed, then why bother putting those features in?

I have checked the metadata titles, etc on all my films (which are all MKV 264 or 265) using ToolNix and ensured that the titles are all correct and are in the format of FILM NAME (2020), etc.

I know it might seem minor to many, if not most, but it’s a major point of a home media centre for me.

Thanks

EDIT: My Local Media Assets is already demoted as low as it will go on all tabs.

‘Bump’ in case anyone has any info?

Thanks.

Inspect the content of the guid="... property in the Plex XML info of this movie.
Does it say local?
Then you have to manually match the video to the ‘Personal Media’ agent, by doing this:
start a Match/Fix Match procedure https://support.plex.tv/articles/201018497-fix-match-match/
click on ‘Search Options’
select as Agent ‘Personal Media’
Search
click on the sole search result

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