This video demonstrates seeking features of mpvacious.

Shift+h and Shift+l - Seek to the previous or the next subtitle.
Alt+h and Alt+l - Seek to the previous or the next subtitle, and pause.
Ctrl+h - Seek to the start of the currently visible subtitle.
Ctrl+Shift+h - Replay current subtitle line, and pause.

mpvacious, a semi-automatic subs2srs for mpv:
https://github.com/Ajatt-Tools/mpvacious

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