Subtitles on roku no longer working

[panthalassa]

Before I submit an issue at the jellyfin roku github, I figured I'd post here to see if anyone had any insight. It seems that after a recent update of the roku jellyfin client, subtitles have gone all wonky. In most cases they just don't work at all. I have checked to make sure the closed captioning is set to "on always" Has anyone seen any similar issues? They work fine when I use a browser. I've fiddled with various settings to no avail (although the un-fiddled with settings were working fine before the roku app update).

Weirdly, they seem to have worked fine on a movie file I tried recently but none of my shows will work. They all seem to be similar MKV files with embedded subtitle tracks. I wish I could provide more details but there doesn't seem to be a pattern other than that they worked before and now they mostly don't. Thanks (hopefully) in advance!

[bitmap]

Need a little more info about a few things. How are you running Jellyfin and what's the host OS and specs? Can you provide an ffprobe or mediainfo on one of the files that doesn't appear to work? CC in Roku doesn't always translate to subtitles in Jellyfin, as you have to set the subtitle track before playback OR enable the correct track after playback begins.

My guess? Most of the files that aren't working have embedded subs that aren't being extracted quickly enough by your server or they're PGS subs, which require transcoding to burn in on Roku (and won't be enabled with CC on always).