If you know the intro ends at 00:01:15 and outro starts at 00:18:30 for a 20‑min episode:
ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "Young.Sheldon.S07E01.mkv" ffprobe -v error -show_entries stream=index,codec_name -of default=noprint_wrappers=1 "Young.Sheldon.S07E01.mkv" young sheldon s07 ffmpeg
for %i in (*.mkv) do ffmpeg -i "%i" -vf "subtitles=%i:si=0" -c:v libx264 -crf 20 -c:a copy "hardsub_%~ni.mp4" If you only want the first 10 seconds of his intro monologue: If you know the intro ends at 00:01:15