Add an SRT subtitle file into an MP4 file

mp4box

  • MPEG-4 Systems Toolbox - Muxes streams into MP4 container.
    More information: <https://gpac.wp.imt.fr/mp4box>.
  • Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

mp4box -add {{input_subs.srt}}:lang=eng -add {{input.mp4}} {{output.mp4}}

click the source code to copy