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mp4fragment

    MP4 Fragmenter - Version 1.7.0
    (Bento4 Version 1.6.0.0)
    (c) 2002-2020 Axiomatic Systems, LLC
    usage: mp4fragment [options] <input> <output>
    options are:
      --verbosity <n> sets the verbosity (details) level to <n> (between 0 and 3)
      --debug enable debugging information output
      --quiet don't print out notice messages
      --fragment-duration <milliseconds> (default = automatic)
      --timescale <n> (use 10000000 for Smooth Streaming compatibility)
      --track <track-id or type> only include media from one track (pass a track ID, 'audio', 'video' or 'subtitles')
      --index (re)create the segment index
      --trim trim excess media in longer tracks
      --no-tfdt don't add 'tfdt' boxes in the fragments (may be needed for legacy Smooth Streaming clients)
      --tfdt-start <start> value of the first tfdt timestamp, expressed as a floating point number in seconds
      --sequence-number-start <start> value of the first segment sequence number (default: 1)
      --force-i-frame-sync <auto|all> treat all I-frames as sync samples (for open-gop sequences)
        'auto' only forces the flag if an open-gop source is detected, 'all' forces the flag in all cases
      --copy-udta copy the moov/udta atom from input to output
      --no-zero-elst don't set the last edit list entry to 0 duration
      --trun-version-zero set the 'trun' box version to zero (default version: 1)