subdump is a utility program that displays the textual representation of subtitle streams in media files.
Here's an example:
auto-editor subdump resources/subtitle.mp4 file: resources/subtitle.mp4 (0:und:srt) 1 00:00:00,523 --> 00:00:01,016 oop 2 00:00:01,523 --> 00:00:01,916 boop ------
subdump won't work if the subtitle stream is interally represented as a bitmap image instead of formatted text.
You may call subdump with