Could you elaborate on how you set it up to extract the embedded subtitles?
replyI think you don't want to do the "extract embedded subtitles" method, it's slow as hell and downloading external subtitles is much faster than the built-in extract, at least for HDR+4K mkv video which is what we end up with the most. Can take up to a minute for a 40 minute episode to extract the subtitles, which means you'll need to pause for a minute before you can watch with subtitles, with a 5950X CPU.
replyThere's an official plug-in in Jellyfin called "Subtitle Extract" that does it automatically for you.
replyI personally use Bazarr instead, because I also want to download subtitles for different languages. In Bazarr, Embedded Subtitles is just another subtitle provider that can fetch subtitles depending on your rules.
> If you pick embedded subtitles with these clients, Jellyfin must extract the subtitles files immediately, and this takes a while depending on container format, file sizes and server load.
replyReally? How?
My expectation would be that extracting a subtitle file takes a few seconds at most. If you had to do it on the fly every time you watched anything in your library, it wouldn't matter.
I don't undestand how movie containers work, but I ran this on a 70 GB movie file to test:
reply ffmpeg -i input.mkv -map 0:s:0 /tmp/subtitles.srt
IIRC, in many containers embedded subtitles will be interleaved with the video and audio atoms/boxes/packets/etc., and so pulling out the subtitles requires scanning the full file. Not quite as expensive as decoding or re-encoding, but still as slow as "stream the full file into memory and demux the streams"
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