Use a dedicated program like Subtitle Edit or a command-line tool such as ffmpeg (e.g., ffmpeg -i input.mkv -map 0:s:0 subtitles.srt ). These tools extract the subtitle stream without re-encoding the video, saving time and preserving original text fidelity.
Understanding what each segment of the file string means allows you to configure your playback environment correctly:
A modern, native media player built specifically for macOS that utilizes the powerful MPV playback engine.