Out of sync subtitles on transcoded content

[Narky]

Hi everyone,

I've been having issues with subtitles beeing out of sync, I have tested with several browsers (firefox, Opera, Brave), on the beggining of the stream the subtitles are ok, but if I jump ahead they get out of sync.

I have also tested on the android APP and AndroidTV APP, on these I have no issue, but realized there is a difference to the browser tests, on android there is no transcoding happening, so the issue apparently only happens on transcoded content.

I also saw a strange behaiour on the browser, when I'm playing a movie and click on settings, the subtitles deviation is constantly showing diferent values, I see it going from 9 to 0  and back to 9, like one per second (9,8,7,6,5,4,3,2,1,0,9,8...).

Sometimes the out of sync is only about 1 second, sometimes a few more seconds, so it's like when i jump to a movie position it's a gamble if i'm gonna be on sync or uo to 9 seconds out of sync.

Anyone else having this issue?

Is there any option that will correct this?

I'm runnig the latest jellyfin version (10.9.6) under Ubuntu 22.


Best Regards,
Luis Fonseca