Audio and subtitles will usually be embedded within your video container file (e.g. mkv), but the server also supports loading audio and subtitle streams from external files. The server supports reading either single files or containers like mka (Matroska Audio) or mks (Matroska Subtitle) with one or more streams.
External audio files and containers are supported on Jellyfin 10.8 and later.
Jellyfin will search for external files that exactly match the video filename.
They can optionally include a language which will only be used if the language cannot be determined from the file metadata.
They can also include the
default flags to mark the streams accordingly.
Those flags are ignored on containers with more than one stream.
Flags and language need to be appended to the video filename with
. as delimiter.
If multiple languages are defined within the filename the last one will be used and the others ignored. Any arbitrary text not parsable to a language or flag will be combined and used as the title of the stream.
/Movies /Film (1946) Film.mkv Film.vtt Film.aac Film.de.srt Film.en.dts Film.german.ac3
Extended example with flags and stream title
/Movies /Film (1986) Film.mkv Film.mka Film.mks Film.en.ac3 Film.default.srt Film.default.en.forced.ass Film.forced.forced.en.dts Film.English Commentary.en.mp3
The last file will parse to an English mp3 audio stream with the title