mp4art - MP4v2 - manual page for mp4art - MP4v2 2.1.3
mp4art [OPTION]... ACTION file...
For each mp4 (m4a) file specified, perform the specified ACTION.
    An action must be specified. Some options are not applicable for some
    actions.
ACTIONS
  - --list
- list all covr-boxes
- --add IMG
- add covr-box from IMG file
- --replace
    IMG
- replace covr-box with IMG file
- --remove
- remove covr-box
- extract covr-box
ACTION PARAMETERS
  - --art-any
- act on all covr-boxes (default)
- --art-index
    IDX
- act on covr-box index IDX
OPTIONS
  - -z,
    --optimize
- optimize mp4 file after modification
- -y, --dryrun
- do not actually create or modify any files
- -k,
    --keepgoing
- continue batch processing even after errors
- -o,
    --overwrite
- overwrite existing files when creating
- -f, --force
- force overwrite even if file is read-only
- -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