: Manually shift the subtitle timing by milliseconds if the "deep" sync is slightly off. Common Uses

: Providing English or foreign language text for the film.

: "Deep" indexing allows users to search for specific lines of dialogue within the film's metadata.

: Use the exact filename string to automatically download the correct timing from databases like OpenSubtitles.

: While x264 is a video codec, subtitle files paired with these releases are often in .SRT (SubRip) or .ASS (Advanced Substation Alpha) formats.

The phrase refers to a specific subtitle file format designed to sync with a common digital release of the 2021 film The Unforgivable , starring Sandra Bullock.