ffmpeg -i original_s03e04.mkv -map 0:s:m:forced? -c copy forced_subtitles.ass
(Note: This requires the subtitle file to be in the same folder or you must provide the full path.) game of thrones season 03 ffmpeg
Note: The Red Wedding scene (E09) specifically benefits from brightness=0.05 to see Catelyn’s face in the dim hall. ffmpeg -i original_s03e04