jack-stdout1

Usage

Overview

jack-stdout captures audio from JACK and writes raw data to standard-output.

The number of given ports detemine the number of audio channels that are used. If more than one channel is given, the audio-sample data will be interleaved.

Options

-b, --bitdepth BITS

Specify the bit-depth of each sample. For integer-encoding this can be 16 or 24. The default is 16. This setting is only used for integer encoding: Floating-point samples will always be 32 bit wide.

-d, --duration SEC

Specify the time for which jack-stdout should run in seconds. A value less than 1 means to run indefinitely. The default is 0.

-e, --encoding FORMAT

Set the output format of the data: signed-integer, unsigned-integer, floating-point (default: signed)

-n, --name CLIENTNAME

Set JACK client name (default: jstdout)

-h, --help

Print a brief usage information

-L, --little-endian

Write little-endian data or native-byte-order float (this is the default)

-B, --big-endian

Output big-endian data or swap the byte-order of floating-point

-q, --quiet

Inhibit usual output. This affects information and buffer-overflow warnings but not setup-errors.

-S, --bufsize SAMPLES

Choose the internal buffer-size in samples. The default size is 65536. The given value will be multiplied by the number of channels and bit-depth to get the size of the ring-buffer.

Examples

  jack-stdout xmms_0:out_1 xmms_0:out_2 \
  | mono  ~/Desktop/Downloads/JustePort.exe - 10.0.1.6 0
  jack-stdout -b 24 -e unsigned -B system:capture_1 system:capture_2 \
  | sox -t raw -r 48k -e unsigned -b 24 -B -c 2 - /tmp/recording.wav
  jack-stdout system:capture_1 system:capture_2 \
  | oggenc -r -R 48000 -B 16 -C 2 - \
  > /tmp/recording.ogg
  jack-stdout system:capture_1 \
  | oggenc -r -R 48000 -B 16 -C 1 - \
  | oggfwd -p -n "my live stream" localhost 5900 hackme live.ogg