This is the command mp4art that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
mp4art - manual page for mp4art - MP4v2 -r
SYNOPSIS
mp4art [OPTION]... ACTION file...
DESCRIPTION
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
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
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