pacat - Online Linux Manual PageSection : 1
Updated : User
Source : Manuals
NAMEpacat − Play back or record raw or encoded audio streams on a PulseAudio sound server
SYNOPSISpaplay [options] [FILE] parecord [options] [FILE] pacat [options] [FILE] parec [options] [FILE] pamon [options] [FILE] pacat --help pacat --version
DESCRIPTIONpacat is a simple tool for playing back or capturing raw or encoded audio files on a PulseAudio sound server. It understands all audio file formats supported by libsndfile.
OPTIONS-h | --help Show help. --version Show version information. -r | --record Capture audio data and write it to the specified file or to STDOUT if none is specified. If the tool is called under the name parec this is the default. -p | --playback Read audio data from the specified file or STDIN if none is specified, and play it back. If the tool is called under the name pacat this is the default. -v | --verbose Enable verbose operation. Dumps the current playback time to STDERR during playback/capturing. -s | --server=SERVER Choose the server to connect to. -d | --device=SINKORSOURCE Specify the symbolic name of the sink/source to play/record this stream on/from. The special names , and can be used to specify the default sink, source and monitor respectively. --monitor-stream=INDEX Record from the sink input with index INDEX. -n | --client-name=NAME Specify the client name paplay shall pass to the server when connecting. --stream-name=NAME Specify the stream name paplay shall pass to the server when creating the stream. --volume=VOLUME Specify the initial playback volume to use. Choose a value between 0 (silent) and 65536 (100% volume). --rate=SAMPLERATE Capture or play back audio with the specified sample rate. Defaults to 44100 Hz. --format=FORMAT Capture or play back audio with the specified sample format. See https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/SupportedAudioFormats/ for supported values. Defaults to s16ne. --channels=CHANNELS Capture or play back audio with the specified number of channels. If more than two channels are used it is recommended to use the --channel-map option below. Defaults to 2. --channel-map=CHANNELMAP Explicitly choose a channel map when playing back this stream. The argument should be a comma separated list of channel names: front-left, front-right, mono, front-center, rear-left, rear-right, rear-center, lfe, front-left-of-center, front-right-of-center, side-left, side-right, top-center, top-front-center, top-front-left, top-front-right, top-rear-left, top-rear-right, top-rear-center, or any of the 32 auxiliary channel names aux0 to aux31. --fix-format If passed, the sample format of the stream is changed to the native format of the sink the stream is connected to. --fix-rate If passed, the sampling rate of the stream is changed to the native rate of the sink the stream is connected to. --fix-channels If passed, the number of channels and the channel map of the stream is changed to the native number of channels and the native channel map of the sink the stream is connected to. --no-remix Never upmix or downmix channels. --no-remap Never remap channels. Instead of mapping channels by their name this will match them solely by their index/order. --latency=BYTES Explicitly configure the latency, with a time specified in bytes in the selected sample format. If left out the server will pick the latency, usually relatively high for power saving reasons. Use either this option or --latency-msec, but not both. --latency-msec=MSEC Explicitly configure the latency, with a time specified in milliseconds. If left out the server will pick the latency, usually relatively high for power saving reasons. Use either this option or --latency, but not both. --process-time=BYTES Explicitly configure the process time, with a time specified in bytes in the selected sample format. If left out the server will pick the process time. Use either this option or --process-time-msec, but not both. --process-time-msec=MSEC Explicitly configure the process time, with a time specified in milliseconds. If left out the server will pick the process time. Use either this option or --process-time, but not both. --property=PROPERTY=VALUE Attach a property to the client and stream. May be used multiple times --raw Play/record raw audio data. This is the default if this program is invoked as pacat, parec or pamon. --file-format[=FFORMAT] Play/record encoded audio data in the file format specified. This is the default if this program is invoked as paplay and parecord. --list-file-formats List supported file formats.
LIMITATIONSDue to a limitation in libsndfile paplay currently does not always set the correct channel mapping for playback of multichannel (i.e. surround) audio files, even if the channel mapping information is available in the audio file.
AUTHORSThe PulseAudio Developers <pulseaudio-discuss (at) lists (dot) freedesktop (dot) org>; PulseAudio is available from http://pulseaudio.org/
SEE ALSOpulseaudio(1), pactl(1) 0
Johanes Gumabo
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