stash/ui/v2.5/src/docs/en/Manual/Captions.md

Captions

Stash supports captioning with SRT and VTT files.

These files need to be named as follows:

Scene

• {scene_name}.{language_code}.ext
• {scene_name}.ext

Where {language_code} is defined by the ISO-6399-1 (2 letters) standard and ext is the file extension. Captions files without a language code will be labeled as Unknown in the video player but will work fine.

Scenes with captions can be filtered with the captions criterion.

Note: If the caption file was added after the scene was initially added during scan you will need to run a Selective Scan task for it to show up.