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mp4edit

    MP4 File Editor - Version 1.2
    (Bento4 Version 1.6.0.0)
    (c) 2002-2017 Axiomatic Systems, LLC
    usage: mp4edit [commands] <input> <output>
        where commands include one or more of:
        --insert <atom_path>:<atom_source>[:<position>]
        --remove <atom_path>
        --replace <atom_path>:<atom_source>
        and <atom_source> may be either a filename for a file
        that contains the atom data (header and payload), or
        <uuid>#<file> with <uuid> specifying an atom uuid type,
        as a 32-character hex value, and <file> a file with the atom
        payload only.