mp4box make subtitles default/forced

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petergrabs
2014-06-05
2014-06-05
  • petergrabs
    petergrabs
    2014-06-05

    i use mp4box to create video files with multiple audio and subtitle tracks each.
    i have subtitles which only play for short moments (like when elvish is spoken in lord of the rings). i want these subtitles to be displayed when the video is launched (i use mpc-hc, but the solution shouldnt be specific to that).
    the user may then switch to full subtitles or another language, but i want this one subtitle track to be active by default.
    is there a way to do that (except encoding them to the video itself)?

    if not, is this a limitation of mp4box or of the mp4 container standard?

    researching this i found the -enable option, which doesnt seem to change anything, and i found the concept of "group" which i havent understood yet. can that actually group tracks together so that when i change the audio language the subtitles for the elvish parts change language too (like a dvd would behave)? if not by group, can this be achieved in any way?

     
    Last edit: petergrabs 2014-06-05