subtitles not showing up

[TheDreadPirate]

Did you enable subtitle extraction on-the-fly?  Are you using the Subtitle Extract plugin to pre-extract subtitles.  I THINK this would happen if you were doing on-the-fly extraction and it took too long and timed out.

Can you share your full jellyfin log via privatebin.net?

 Hello, thanks for the reply and sorry about the late reply.
I NOT have the Subtitle Extract plugin installed. I just did and ALLOW SUBTITLE EXTRACTION ON THE FLY is enabled in http://localhost:8096/web/index.html#/da...ranscoding
But I need to mention: there were subtitles for this film ALREADY on file BEFORE i installed the plugin. Two of them, in fact, as my screenshot shows. The subtitled played fine on my PC. 
Now they also play fine on my LG TV app. 
But there are no subtitles present on my Android TV app!
Any help would be appreciated. 

About log you asked, the latest log is called FFmpeg.Remux-2025-04-21_13-44-14_5 ... that was created just now, I think in response to installation of the  Subtitle Extract plugin:
https://privatebin.io/?7ddd1957d831ddb6#3bh5kt6CNGYGF1Fio3ksa4w6ybU7m7Uo5PzetqA1xMfj

I would need the main jellyfin log, not the ffmpeg log, since the subtitle extraction is not put in the ffmpeg log.

The PC client supports displaying subtitles directly from the embedded subtitle track.  IIRC, the Android TV client needs them extracted and sent as a separate stream.  This can be achieve either on the fly or pre-extracted.  On-the-fly extraction means the video starts while Jellyfin works in the background to extract the sub.  This can result in no subtitles for a period.  Depending on how fast your storage and CPU are, this can take a second or could possibly time out if it takes longer than 30 seconds.

Pre-extraction can either be done when you play a video, which results in no playback UNTIL the subtitle is extracted, or global pre-extraction with the Subtitle Extract plugin.  The plugin requires that you run the job from Scheduled Tasks in the dashboard.

Your main jellyfin log, named log_20250421.log or jellyfin20250421.log, will have the information about how this process is unfolding.