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Jellyfin won't render .ASS subtitles - Printable Version

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Jellyfin won't render .ASS subtitles - rizill - 2024-10-29

Been trying now for hours trying to get jellyfin to show .ASS subtitles but just cant get it to work.

Im running version 10.10.0 as a docker on Unraid. I have enabled hardware acceleration and turned on transcoding aswell, but .ass subtitles wont appear at all. Other types of subtitles work. Im not that experienced and I just got unraid running yesterday, so everything is very new to me. I have been running jellyfin on windows previously for a few months with no issues. Currently at a loss whats going on...

logs attachted


RE: Jellyfin won't render .ASS subtitles - TheDreadPirate - 2024-10-29

It says it is burning in the subtitles. What client are you playing on and what kind of Nvidia GPU?


RE: Jellyfin won't render .ASS subtitles - rizill - 2024-10-29

(2024-10-29, 07:57 PM)TheDreadPirate Wrote: It says it is burning in the subtitles.  What client are you playing on and what kind of Nvidia GPU?

Tested on desktop in browser, androidtv and mobile. only time Ive gotten .ass subs to show is using VLC as external player on android.

Using a 1050ti


RE: Jellyfin won't render .ASS subtitles - TheDreadPirate - 2024-10-29

Which Docker image are you using? The official image or a 3rd party image?


RE: Jellyfin won't render .ASS subtitles - rizill - 2024-10-29

(2024-10-29, 10:09 PM)TheDreadPirate Wrote: Which Docker image are you using?  The official image or a 3rd party image?

jellyfin/jellyfin, that's the official one I believe, also tried hexbin but that had same issue


RE: Jellyfin won't render .ASS subtitles - TheDreadPirate - 2024-10-29

I booted up my unRAID test setup and I wasn't able to replicate.

Do you have any fallback fonts setup or something?


RE: Jellyfin won't render .ASS subtitles - rizill - 2024-10-30

added a fallback font (and enabled), still the same


RE: Jellyfin won't render .ASS subtitles - TheDreadPirate - 2024-10-30

I'll do more testing when I get home. I noticed something that may have affected my test last night. Most of my content with ASS subs has a bunch of attachments for fonts, but yours doesn't. I found an old show with ASS subs without any font attachments. So I will spin up my unRAID test setup again and re-test with that show.

I'm wondering if there is some weirdness with how unRAID passes in system fonts. Since it is burning in the subs, it would be using system fonts and not client fonts.

Were the fallback fonts you added to the server WOFF2 format?


RE: Jellyfin won't render .ASS subtitles - rizill - 2024-10-30

yes, converted to woff2, gonna redo the test with a fresh docker image


RE: Jellyfin won't render .ASS subtitles - rizill - 2024-10-30

okay so some .ass subtitles work, some do not. I dont know what im looking at so heres two logs from two cases where they did show and one where they didnt