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File extension check for pictures is case-sensitive #736

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opened 2026-02-06 20:03:18 +03:00 by OVERLORD · 2 comments
OVERLORD commented 2026-02-06 20:03:18 +03:00
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Originally created by @Liggy on GitHub (Jun 5, 2019).

Originally assigned to: @anthonylavado on GitHub.

Describe the bug
In a library containing content type "Home videos & photos" or "Mixed Content", pictures are only recognized if the file extension is lower case.

To Reproduce

  1. In a library with content type "Home videos & photos" or "Mixed Content", create image files named e.g. working.jpg and broken.JPG (png/PNG works as well)
  2. Rescan library if realtime monitoring is not active
  3. Check library content: Any picture with a lower case file extension is shown, file extensions containing upper case letter are missing

Expected behavior
Case insensitive scan, so files with upper case (maybe even mixed case) extension will be added to the library as well.

Logs
Added files are listed with "Getting image size for item Photo {Full path}", the other files don't even show up

System (please complete the following information):

  • OS: tried Docker and Windows
  • Browser: Firefox, Edge
  • Jellyfin Version: 10.3.3
  • Reverse proxy: Apache or direct makes no difference

Additional context
This only seems to affect pictures, while other content types seem unaffected. I tested .MP3, .MP4 and .ISO without problem.

Originally created by @Liggy on GitHub (Jun 5, 2019). Originally assigned to: @anthonylavado on GitHub. **Describe the bug** In a library containing content type "Home videos & photos" or "Mixed Content", pictures are only recognized if the file extension is lower case. **To Reproduce** 1. In a library with content type "Home videos & photos" or "Mixed Content", create image files named e.g. working.jpg and broken.JPG (png/PNG works as well) 2. Rescan library if realtime monitoring is not active 3. Check library content: Any picture with a lower case file extension is shown, file extensions containing upper case letter are missing **Expected behavior** Case insensitive scan, so files with upper case (maybe even mixed case) extension will be added to the library as well. **Logs** Added files are listed with "Getting image size for item Photo {Full path}", the other files don't even show up **System (please complete the following information):** - OS: tried Docker and Windows - Browser: Firefox, Edge - Jellyfin Version: 10.3.3 - Reverse proxy: Apache or direct makes no difference **Additional context** This only seems to affect pictures, while other content types seem unaffected. I tested .MP3, .MP4 and .ISO without problem.
OVERLORD added the bug label 2026-02-06 20:03:18 +03:00
OVERLORD commented 2026-02-06 20:03:20 +03:00
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@anthonylavado commented on GitHub (Jun 5, 2019):

Sorry for the trouble! This is a duplicate of #1365, which is fixed in #1367. Sadly, this is slated for 10.4 right now, but we don't have an estimated release date for that. I'll see what we can do about a backport.

@anthonylavado commented on GitHub (Jun 5, 2019): Sorry for the trouble! This is a duplicate of #1365, which is fixed in #1367. Sadly, this is slated for 10.4 right now, but we don't have an estimated release date for that. I'll see what we can do about a backport.
OVERLORD commented 2026-02-06 20:03:21 +03:00
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@Liggy commented on GitHub (Jun 5, 2019):

Sorry, I didn't find the other bug when I searched for it. 😳
I guess this can be closed as duplicate of #1365 then and I don't mind waiting for 10.4

@Liggy commented on GitHub (Jun 5, 2019): Sorry, I didn't find the other bug when I searched for it. 😳 I guess this can be closed as duplicate of #1365 then and I don't mind waiting for 10.4
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