arecordmidi

arecordmidi -p client:port[,...] [options] midifile

arecordmidi records MIDI data from ALSA sequencer ports to a Standard MIDI File. It captures note events, control changes, and other MIDI messages from connected keyboards or controllers.Ports are addressed as client:port (for example 20:0) or by name, as listed by the -l option. The tool is useful for capturing performances without running a full DAW application.

-p client:port[,...], --port client:port

Sequencer source port(s) to record from (required)

List possible input ports, then exit

Tempo in beats per minute (default: 120)

Timing resolution in ticks per beat (default: 384)

Use SMPTE timing instead of musical ticks (24, 25, 29.97, or 30 fps)

Write each MIDI channel to a separate track (format 1 file)

Play a metronome click on the specified port

Time signature; denominator must be a power of two (default: 4:4)

Recording starts immediately; no countdown by default. arecordmidi reads from ALSA sequencer ports only, not raw MIDI devices, so connect raw hardware through the sequencer (for example with amidi or a virtual raw-MIDI port) first. Stop the recording with Ctrl-C; the file is written on exit.

arecordmidi is part of the ALSA utilities, providing basic MIDI recording capability since ALSA's introduction in the early 2000s.

aplaymidi(1), aconnect(1), amidi(1)

Source code · Homepage