Provided by: mpg123_1.25.10-2_amd64 bug


       out123 - send raw PCM audio or a waveform pattern to an output device


       cat audio.raw | out123 [ options ]

       out123 --wave-freq freq1[,freq2,...]  [ options ]


       out123  reads  raw  PCM  data (in host byte order) from standard input and plays it on the
       audio device specified by given options.  Alternatively, it can generate periodic  signals
       for playback itself.


       out123  options  may  be either the traditional POSIX one letter options, or the GNU style
       long options.  POSIX style options start with a single ``-'', while GNU long options start
       with  ``--''.   Option  arguments  (if needed) follow separated by whitespace (not ``='').
       Note that some options can be absent from your installation when  disabled  in  the  build

       --name name
              Set  the  name  of  this  instance,  possibly used in various places. This sets the
              client name for JACK output.

       -o module, --output module
              Select audio output module. You can provide a comma-separated list to use the first
              one that works.

              List the available modules.

       -a dev, --audiodevice dev
              Specify  the  audio  device  to  use.   The  default  is  system-dependent (usually
              /dev/audio or /dev/dsp).  Use this option if you have multiple  audio  devices  and
              the default is not what you want.

       -s, --stdout
              The  audio  samples are written to standard output, instead of playing them through
              the audio device.  The output format is the same as the input ... so in this  mode,
              out123  acts  like the standard tool  cat.  This shortcut is equivalent to ``-o raw
              -a -''.

       -O file, --outfile
              Write raw output into a file (instead of simply redirecting standard  output  to  a
              file with the shell).  This shortcut is equivalent to ``-o raw -a file''.

       -w file, --wav
              Write output as WAV file file , or standard output if - is or the empty string used
              as file name. You can also use --au and --cdr for AU and CDR format,  respectively.
              Note  that  WAV/AU  writing  to  non-seekable files or redirected stdout needs some
              thought. The header is written with the first actual data. The result  of  decoding
              nothing  to  WAV/AU is a file consisting just of the header when it is seekable and
              really nothing when not (not even a header). Correctly writing data with  prophetic
              headers  to stdout is no easy business.  This shortcut is equivalent to ``-o wav -a

       --au file
              Write to file in SUN audio format.  If -  or  the  empty  string  is  used  as  the
              filename,  the  AU  file  is written to stdout. See paragraph about WAV writing for
              header fun with non-seekable streams.  This shortcut is equivalent to  ``-o  au  -a

       --cdr file
              Write  to file as a CDR (CD-ROM audio, more correctly CDDA for Compact Disc Digital
              Audio).  If - is or the empty string used as the filename, the CDR file is  written
              to stdout.  This shortcut is equivalent to ``-o cdr -a file''.

       -r rate, --rate rate
              Set  sample  rate  in  Hz (default: 44100). If this does not match the actual input
              sampling rate, you get changed pitch. Might be intentional;-)

       -c count, --channels count
              Set channel count to given value.

       -e enc, --encoding enc
              Choose output sample encoding. Possible  values  look  like  f32  (32-bit  floating
              point), s32 (32-bit signed integer), u32 (32-bit unsigned integer) and the variants
              with different numbers of bits (s24, u24,  s16,  u16,  s8,  u8)  and  also  special
              variants  like  ulaw  and  alaw  8-bit.   See  the  output of out123's longhelp for
              actually available encodings.  Default is s16.

       -m, --mono
              Set for single-channel audio (default is two channels, stereo).

              Select stereo output (2 channels, default).

              List known encoding short and long names to standard output.

              Check if given format is supported by given driver  and  device  (in  command  line
              before encountering this), silently returning 0 as exit value if it is the case.

              Print out the short names of encodings supported with the current setup.

              If  the  selected driver and device communicate some default accepted format, print
              out a command line fragment for out123 setting that format, always in  that  order:
              --rate <r> --channels <c> --encoding <e>

       -o h, --headphones
              Direct audio output to the headphone connector (some hardware only; AIX, HP, SUN).

       -o s, --speaker
              Direct audio output to the speaker  (some hardware only; AIX, HP, SUN).

       -o l, --lineout
              Direct audio output to the line-out connector (some hardware only; AIX, HP, SUN).

       -b size, --buffer size
              Use  an audio output buffer of size Kbytes.  This is useful to bypass short periods
              of heavy system activity, which  would  normally  cause  the  audio  output  to  be
              interrupted.   You  should specify a buffer size of at least 1024 (i.e. 1 Mb, which
              equals about 6 seconds of usual audio data) or more; less than about 300  does  not
              make much sense.  The default is 0, which turns buffering off.

       --preload fraction
              Wait  for  the  buffer  to be filled to fraction before starting playback (fraction
              between 0 and 1). You can tune this prebuffering to either get sound faster to your
              ears  or  safer  uninterrupted  web  radio.   Default  is 0.2 (changed from 1 since
              version 1.23).

       --devbuffer seconds
              Set device buffer in seconds; <= 0 means default value. This is  the  small  buffer
              between  the  application  and  the  audio  backend,  possibly  directly related to
              hardware buffers.

       --timelimit samples
              Set playback time limit in PCM samples if set to a value greater than zero.  out123
              will  stop  reading  from  stdin  or  playing  from  the generated wave table after
              reaching that number of samples.

       --wave-freq frequencies
              Set wave generator frequency or list of those with comma separation for enabling  a
              generated  test  signal instead of standard input. Empty values repeat the previous

       --wave-pat patterns
              Set the waveform patterns of the generated waves as comma-separated list.   Choices
              include  sine,  square,  triangle,  sawtooth, gauss, pulse, and shot.  Empty values
              repeat the previous one.

       --wave-phase phases
              Set waveform phase shift(s) as comma-separated list, negative values inverting  the
              pattern in time and empty value repeating the previous.

       --wave-limit samples
              Set  a  custom soft limit on the wave table size. Small values cause larger changes
              in actual frequencies to make whole periods fit.

       -t, --test
              Test mode.  The audio stream is read, but no output occurs.

       -v, --verbose
              Increase the verbosity level.

       -q, --quiet
              Quiet.  Suppress diagnostic messages.

              Tries to get higher priority

       -T, --realtime
              Tries to gain realtime priority.  This option usually requires root  privileges  to
              have any effect.

       -?, --help
              Shows short usage instructions.

              Shows long usage instructions.

              Print the version string.


              Thomas Orgis <>, <>

       Creator (ancestry of code inside mpg123):
              Michael Hipp

       Uses code or ideas from various people, see the AUTHORS file accompanying the source code.


       out123  is licensed under the GNU Lesser/Library General Public License, LGPL, version 2.1


                                           26 May 2016                                  out123(1)