Subtitle offset Android TV

[KillsT3aler69]

Jellyfin server version: 10.10.3
Installation method: Docker
Docker version: Community 27.2.1
Linux version: Ubuntu 24.04.1 LTS
Client: jellyfin-androidtv 0.18.2 release

Whenever I skip ahead in a movie, the subtitle sync is off (by a couple seconds) for the entirety of the movie. The subtitles are external (.srt) and the sync is correct when playing it externally with eg. VLC. Whenever I start a movie and don’t skip ahead, the sync remains perfect. The same issue is not present on pc/web version.

Steps to reproduce:
Get a movie with external subtitles which are synced. Play the movie on Android TV. Skip ahead a few minutes.

[TheDreadPirate]

I'll do some testing and get back to you.

[TheDreadPirate]

I was not able to reproduce. But all of my media I re-encoded. So any muxing issues have been corrected, which is what I suspect is going on with you. You can try remuxing the video to see if that resolves this issue.

Code:

sudo docker exec -it jellyfin back
/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags +genpts+igndts -i "/path/to/your/video.mkv" -map 0 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts disabled newFile.mkv

[KillsT3aler69]

I was not able to reproduce.  But all of my media I re-encoded.  So any muxing issues have been corrected, which is what I suspect is going on with you.  You can try remuxing the video to see if that resolves this issue.

Code:

sudo docker exec -it jellyfin back
/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags +genpts+igndts -i "/path/to/your/video.mkv" -map 0 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts disabled newFile.mkv

Unfortunately this didn't fix the issue. The situation is the exact same as described in the OP. Could you elaborate on the fact that you think muxing issues are causing this? I'm no expert but I think it's weird that the same issue applies to all movies if it were a muxing issue.

[KillsT3aler69]

UPDATE: The issue is not present for all movies, I had just bad luck while testing. But I'm not able to see a correlation between the movies that have the issue and the movies that don't.