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MELT(1) User Commands MELT(1) 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 -progress2 Display progress along with position on a new line -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 (C) 2002-2026 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. melt 7.38.0 April 2025 MELT(1)
NAME | SYNOPSIS | OPTIONS | COPYRIGHT
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