jack_rec(1)

jack_rec1

Jack toolkit client for recording audio

Usage

jack_rec -f filename -d seconds [-b bitdepth] port1 [port2 ...]

Overview

jack_rec is a basic, but useful, audio recorder that will record audio from 1 or more JACK ports to a file on disk. The file format is always RIFF/WAV, with samples stored as signed integers. The sample bit depth can be selected using the -b option. The file will have as many channels as there are ports specified on the command line - each channel will contain the data recorded from one port. The user should generally specify the duration (in seconds) using the -d option. If not specified, jack_rec will record until terminated by a signal (eg. from Ctrl-c).

This application is not intended to be a heavy duty audio recorder, and originated as an example client to show how to handle threading and disk I/O in a JACK client. However, it is a useful, simple recorder and is included in the JACK toolkit as a result.

Releases

Unchanged in 2 releases since Debian 13 (Trixie).

  1. 13–Arch

From jack-example-tools 4-2 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.