How to (force) recreate chapter images for specific movie/show/season?

[TheDreadPirate]

Am I able to extract chapter images only, without replacing all of the existing metadata?
I have chapter image extraction to run at the default scheduled time & on library scan, but I only enabled this feature after my library was populated.
Chapter images are only extracted for newly added files, not existing files.
Manually running the scheduled task does not generate chapter images on the old files. When manually run, it takes less than 5 minutes.
The only way I can generate chapter images for older files is to replace all metadata, which deletes/replaces the poster & fanart images scraped by TMM (which I prefer).

I setup a test library to replicate your situation: Already have a populated library, but didn't enable trickplay/chapter image extraction when creating the library.

After the initial scan finished on the two movies in the test library, I went back and enabled both trickplay and chapter image extraction.  Running the scheduled task for both triggered it to go back and extract chapter images and generate trickplays.

Before I ran the job, this row in the UI didn't exist.

   

What version of Jellyfin are you running?  Can you share your log via pastebin?  Maybe something else is going on with your server to cause this.

[Terry Fyde]

Am I able to extract chapter images only, without replacing all of the existing metadata?
I have chapter image extraction to run at the default scheduled time & on library scan, but I only enabled this feature after my library was populated.
Chapter images are only extracted for newly added files, not existing files.
Manually running the scheduled task does not generate chapter images on the old files. When manually run, it takes less than 5 minutes.
The only way I can generate chapter images for older files is to replace all metadata, which deletes/replaces the poster & fanart images scraped by TMM (which I prefer).

I setup a test library to replicate your situation: Already have a populated library, but didn't enable trickplay/chapter image extraction when creating the library.

After the initial scan finished on the two movies in the test library, I went back and enabled both trickplay and chapter image extraction.  Running the scheduled task for both triggered it to go back and extract chapter images and generate trickplays.

Before I ran the job, this row in the UI didn't exist.



What version of Jellyfin are you running?  Can you share your log via pastebin?  Maybe something else is going on with your server to cause this.

Interesting. Thanks for the response.
I'm running Windows server (10.9.9), with my libraries located on a Synology NAS.
Pastebin has told me I've exceeded the allowed limit, so I've (hopefully) attached the txt file directly.

[TheDreadPirate]

Jellyfin is having trouble reading the files. I also noticed that it is directly referencing the network path.

I strongly recommend that you assign the network share a drive letter. What this does is force Windows to handle all of the network accesses. This way Jellyfin is effectively interacting with a file in the same way it would if it was a local drive.

Once you've assigned the share a drive letter, re-add the library via that drive letter and try again.

Also, do you have NFOs? I keep seeing these messages over and over.

Code:

[2024-08-15 21:25:56.570 +10:00] [ERR] [37] MediaBrowser.Providers.TV.EpisodeMetadataService: Error in "TheMovieDb"
System.FormatException: The input string '73375-jack-ryan' was not in a correct format.

But the folder name doesn't have a TMDB ID, which leads me to believe there is something, like an NFO file, providing an incorrect TMDB ID string (should just be the number).

[Terry Fyde]

Thanks, @TheDreadPirate.

I will do as you suggest.
As far as the missing NFOs, you're right. When I started up TMM this morning, I noticed that 2 dozen or so series were missing essential metadata (including series/eps NFOs). I don't know how these were deleted, but they've been rescraped.
Thanks so much for your time & help.

Edit:
I mounted the drive folder as suggested & chapter images are currently being extracted (slooooowly).
I was using the direct path method to work with a Zidoo-specific fork of Jellyfin Android TV. This fork no longer works without the direct path, but the normal Android TV release does, so all good I guess.