These are often a separate track or "forced" flag within the main file. They activate automatically to translate foreign dialogue even if you have main subtitles turned off.
The Difference Between SDH Subtitles and Closed Captions - Verbit subtitle The.Mauritanian.2021.720p.BluRay.x264....
If your current file is missing these translations, you can find specific "Forced" SRT files on community platforms like Subscene or OpenSubtitles . These are often a separate track or "forced"
Unlike standard subtitles that only cover dialogue, SDH tracks include descriptions of sound effects and musical cues (e.g., "[dramatic music plays]" or "[cell door slams]"). subtitle The.Mauritanian.2021.720p.BluRay.x264....