mp4file - MP4v2 - manual page for mp4file - MP4v2 2.1.3
mp4file [OPTION]... ACTION file...
For each mp4 file specified, perform the specified ACTION. An
    action must be specified. Some options are not applicable to some
  actions.
ACTIONS
  - --list
- list (summary information)
- --optimize
- optimize mp4 structure
- --dump
- dump mp4 structure in human-readable format
OPTIONS
  - -y, --dryrun
- do not actually create or modify any files
- -k,
    --keepgoing
- continue batch processing even after errors
- -q, --quiet
- equivalent to --verbose 0
- -d, --debug
    NUM
- increase debug or long-option to set NUM
- -v, --verbose
    NUM
- increase verbosity or long-option to set NUM
- -h, --help
- print brief help or long-option for extended help
- --version
- print version information and exit
DEBUG LEVELS (for raw mp4 file I/O)
  - 0
- supressed
- 1
- add warnings and errors (default)
- 2
- add table details
- 3
- add implicits
- 4
- everything
VERBOSE LEVELS
  - 0
- warnings and errors
- 1
- normal informative messages (default)
- 2
- more informative messages
- 3
- everything