JACK.RECORD(1)
==============
Rohan Drape <rd@slavepianos.org>


NAME
----
jack.record - JACK Capture Client

SYNOPSIS
--------
jack.record [options] sound-file

OPTIONS
-------
*-b*
:   Set the disk buffer size in frames (default=4096).  This value
    must be a power of two.  If the JACK period size at any time
    exceeds this value the recorder will halt.

*-f*
:   Set the file format (default=0x10006).  The number is a bitwise-or
    of two values, the first describes the file type, the second
    the data type.  The default value of 0x10000 | 0x00006 describes a
    thirty-two bit floating point WAV file.

*-m*
:   Set the minimal disk transfer size in frames (default=32).  This
    is an optimization switch.

*-n*
:   Set the number of input channels to create (default=2).

*-s*
:   Capture to a set of single channel sound files.  The sound file
    name must be a valid template.

*-t*
:   Set a timer to stop the recording after the specified number of
    seconds (default=-1).

DESCRIPTION
-----------
jack.record is a light-weight JACK capture client to write an
arbitrary number of channels to disk.  It implements no connection
logic, use jack.plumbing(1) instead.

If the default mode a single multiple channel sound file is written.
If the *-s* option is given a set of single channel sound files are
written.  In this case the sound file name must be a valid template,
the substring %d is replaced with the channel number counting from
zero.

jack.record will write files in any format supported by libsndfile.
The table below shows the most common file format masks.  For other
values see the file 'sndfile.h'.

Format             Code      Description
------             ----      -----------
SF_FORMAT_WAV      0x10000   Microsoft WAV format
SF_FORMAT_AIFF     0x20000   Apple/SGI AIFF format
SF_FORMAT_PCM_16   0x00002   Signed 16 bit data
SF_FORMAT_PCM_24   0x00003   Signed 24 bit data
SF_FORMAT_PCM_32   0x00004   Signed 32 bit data
SF_FORMAT_FLOAT    0x00006   32 bit float data

AUTHOR
------
Rohan Drape <http://slavepianos.org/rd/>

SEE ALSO
--------
jackd(1), libsndfile(3) <http://mega-nerd.com/libsndfile/>
