Jellyfin internal subtitles are not detected when using Jellyfin on a base path different than /

[PaulMcCarthy401]

What is the issue
Jellyfin internal subtitles are not detected

What do you do to make it happen
On both Jellyfin 10.9.11 and 10.10.3, load a video with internal subtitles (automatically loaded from the .srt file which is in the same directory as the video file). Confirm that the expected subtitle is being used from the CC menu, and if not, select it. I have "Auto-load detected subtitles", so the internal subtitles should be loaded automatically. From there:

• asbplayer's subtitle view won't start up.
• the side panel shows "Load subtitles onto a video to start using asbplayer."
• Clicking "Load Subtitles" from the asbplayer right-click menu opens the "Select Subtitles" modal with all three "Subtitle Track" dropdowns showing "Empty" and containing no options.
• Jellyfin plays with regular .srt subtitles showing, not asbplayer's.

Loading external subtitles with drag-and-drop does still work.

What browser?

• Chrome 131.0.6778.140
• Brave 1.71.121
  All other extensions disabled, as well as Brave Shields

Is it happening with local video or streaming video?
Streaming

If the issue is happening with streaming video, what version of the extension are you using?
v1.6.1

If the issue is happening with streaming video, on what website(s) is the issue happening?
Jellyfin

[PaulMcCarthy401]

The reason I couldn't find pages/emby-jellyfin-page.ts was because it wasn't actually being loaded at all since my Jellyfin is hosted at myexampleserver.com/jellyfin/, which doesn't match against the rules in pages.json. Changing the rule in pages.json to match on the path instead fixed that issue, but pages/emby-jellyfin-page.ts doesn't handle the basepath so it tries to download subs from myexampleserver.com/Videos/... and not myexampleserver.com/jellyfin/Videos/...

I'll rename the issue.

[henryphz]

Also have that issue on my media server