NAME

       melt - author, play, and encode multitrack audio/video compositions

SYNOPSIS

       melt [options] [producer [name=value]* ]+

OPTIONS

       -attach filter[:arg] [name=value]*
              Attach a filter to the output

       -attach-cut filter[:arg] [name=value]*
              Attach a filter to a cut

       -attach-track filter[:arg] [name=value]* Attach a filter to a track

       -attach-clip filter[:arg] [name=value]*
              Attach a filter to a producer

       -audio-track | -hide-video
              Add an audio-only track

       -blank frames
              Add blank silence to a track

       -chain id[:arg] [name=value]*
              Add a producer as a chain

       -consumer id[:arg] [name=value]*
              Set the consumer (sink)

       -debug Set the logging level to debug

       -filter filter[:arg] [name=value]*
              Add a filter to the current track

       -getc  Get keyboard input using getc

       -group [name=value]*
              Apply properties repeatedly

       -help  Show this message

       -jack  Enable JACK transport synchronization

       -join clips
              Join multiple clips into one cut

       -link id[:arg] [name=value]*
              Add a link to a chain

       -loglevel level
              Set the logging level (least to most):
              quiet panic, fatal, error, warning, info, verbose, debug, timings

       -mix length
              Add a mix between the last two cuts

       -mixer transition
              Add a transition to the mix

       -null-track | -hide-track
              Add a hidden track

       -profile name
              Set the processing settings

       -progress
              Display progress along with position

       -query List all of the registered services

       -query "consumers" | "consumer"=id
              List consumers or show info about one

       -query "filters" | "filter"=id
              List filters or show info about one

       -query "links" | "link"=id
              List links or show info about one

       -query "producers" | "producer"=id
              List producers or show info about one

       -query "transitions" | "transition"=id
              List transitions, show info about one

       -query "profiles" | "profile"=id
              List profiles, show info about one

       -query "presets" | "preset"=id
              List presets, show info about one

       -query "formats"
              List audio/video formats

       -query "audio_codecs"
              List audio codecs

       -query "video_codecs"
              List video codecs

       -quiet Set the logging level to quiet

       -remove
              Remove the most recent cut

       -repeat times
              Repeat the last cut

       -repository path
              Set the directory of MLT modules

       -serialise [filename]
              Write the commands to a text file

       -setlocale
              Make numeric strings locale-sensitive (legacy support)

       -silent
              Do not display position/transport

       -split relative-frame
              Split the last cut into two cuts

       -swap  Rearrange the last two cuts

       -track Add a track

       -transition id[:arg] [name=value]*
              Add a transition

       -verbose
              Set the logging level to verbose

       -timings
              Set the logging level to timings

       -version
              Show the version and copyright

       -video-track | -hide-audio
              Add a video-only track

       For more help: <https://www.mltframework.org/>

COPYRIGHT

       Copyright © 2002-2024 Meltytech, LLC <https://www.mltframework.org/>
       This  is  free software; see the source for copying conditions.  There is NO warranty; not
       even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.