subtitles

converting subtitles

ffmpeg -i subs.srt subs.ass

burning subtitles onto image instead of adding them as stream

-vf ass=subtitles.ass

extracting subtitles

mencoder dvd://1 -sid 0 -oac copy -ovc copy -vobsubout subtitles -o bla

creates sub/idx files. Use online converter to convert to srt.

https://subtitletools.com/convert-sub-idx-to-srt-online

Synchronise srt files:

http://subshifter.bitsnbites.eu