qtmodernizer(1) BSD General Commands Manual qtmodernizer(1)NAMEqtmodernizer
— Tool to convert legacy movies to modern format with minimal changes.
SYNOPSISqtmodernizer [options ...] pathToSource [pathToDestination]
DESCRIPTIONqtmodernizer is a command line tool to examine a media file which may be
in a legacy format or may contain legacy media tracks. In this case a
legacy format is one which cannot be read directly by CoreMedia or
AVFoundation frameworks.
qtmodernizer examines all the tracks to determine if they are all in a
form that can currently be played. If all tracks are playable and the
format is readable, qtmodernizer does returns and does nothing. If any of
the audio or video tracks are encoded with a codec that CoreMedia does
not support, that track will be converted to a modern format, usually
H.264 for video and AAC for audio (see --useprores for other choices).
Command line options of qtmodernize:
-h | --help
-p | --useprores
If -p or --useprores is specified, qtmodernizer will use the
ProRes video codec and LPCM audio codec instead of H.264 and
AAC-LC. For video tracks it will produce AppleProRes422. For
audio it will produce uncompressed output (lpcm). Tracks outher
than audio or video are not re-encoded and will not be affected.
Either AppleProRes422 may be chosen or the AppleProRes4444
option may be chosen but not both.
-p4 | --useprores4444
If -p4 or --useprores4444 is specified, qtmodernizer will use
the ProRes4444 video codec and LPCM audio codec instead of H.264
and AAC-LC. For video tracks it will produce AppleProRes4444.
For audio it will produce uncompressed output (lpcm). Tracks
outher than audio or video are not re-encoded and will not be
affected. Either AppleProRes4444 may be chosen or the
AppleProRes422 option may be chosen but not both.
-r | --replace
Normally qtmodernizer will not replace any existing files. If
--replace is specified, a file already existing at the destina‐
tion path will be replaced by the new output. qtmodernizer will
not replace the file at original source path used in the com‐
mand.
-v | --verbose
Normally qtmodernizer only displays important error or warning
messages. Specifying --verbose causes other information about
the modernization to be displayed on the command line.
--infoonly implies --verbose.
-i | --infoonly
Causes qtmodernizer to display information about the tracks con‐
tained in the source file and what the modernization process
would be for each track (if any) but does not actually produce
an output file.
EXAMPLES
qtmodernize legacy_movie.mov modern_movie.mov
Each legacy audio and video track would be re-encoded to a modern (H.264
or AAC) track with other tracks passed through. The resulting movie is
saved as modern_movie.mov
qtmodernize -p legacy_movie.mov modern_movie.mov
Legacy audio and video tracks would be re-encoded like in the above exam‐
ple but the resulting codecs would be ProRes for video and LPCM for audio
qtmodernize ~/Movies/legacy_movie.mov
This command will create a modernized movie in the ~/Movies directory
named "legacy_movie-modernized.mov"
HISTORYqtmodernizer command first appeared in Mac OS X 10.9.
Mac OS X April 28, 2024 Mac OS X
