104 lines
3.3 KiB
Groff
104 lines
3.3 KiB
Groff
." Automatically generated text
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.TH 1 "August 31, 2006" "OSS" "User Commands"
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.SH NAME
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ossrecord - Open Sound System recording program.
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.SH USAGE
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ossrecord [options] filename
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.SH DESCRIPTION
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The ossrecord program records audio in Microsoft RIFF (wav) format. It
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will record from any input that's currently set as the recording source
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by the ossxmix/ossmix mixer programs. With the -l option, you also get
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a level meter that will display VU levels in a character mode.
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The filename parameter is name of the (.wav) file to be produced. Output can be
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sent to stdout by giving - as the file name.
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.SH OPTIONS
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-s<rate> Select the recording rate for raw PCM audio (eg -s48000).
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-c<channels> Select the number of channels 1=mono 2=stereo, 4, 6, 8, etc.
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-d<devname> Select <devname> as the device (eg -d/dev/dsp2).
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-f<fmt> Select the output sample format (eg -fS32_LE or -fMU_LAW)
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-f? Prints the list of supported format names.
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-F<cnt> Select the container format (eg WAV or AU). Default is WAV.
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-F? Prints the list of supported container formats.
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-R Open audio device in raw mode to disable virtual mixing and
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sample rate/format conversions. Can be used when recording
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from a digital source (S/PDIF input).
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-v Verbose output.
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-l Display level meters (character based).
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-i<recsrc|?> Select the recording source or display available recording
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sources if '?' is supplied.
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e.g. ossrecord -i? may display:
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vol
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line (currently selected)
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mic
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cd
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aux1
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phone
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mono
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video
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-m<nfiles> Repeat the recording operation <nfiles> times. The filename
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argument must have %d (or %02d) somewhere in the file to
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guarantee unique filenames. If no %d is given then subsequent
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recordings will overwrite the previous one(s). This option is
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useful only with loopback audio devices or if the -t option
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is used.
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-r<command> This option launches the <command> in background after
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recording the file has completed. The name of the recorded file
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will be given as the (only) command line argument. When the -m
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option is used the script will run in parallel while recording
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the next file. See the COMMAND SCRIPT section (below) for more
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info.
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-g<gain> Amplify recorded samples by percentage given as argument.
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100 (default) means normal signal level, 200 means double level.
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Only supported in 16 and 32 bit modes.
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-t<maxsecs> Do not record more than <maxsecs> seconds in a single recording
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operation.
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-L<level> Set the recording level to <level>.
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-O Allow overwriting of file when recording.
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-h Display usage instructions.
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.SH COMMAND SCRIPT
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The -r command line argument makes it possible to execute a
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script or program after recording of the wave file is finished.
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Below is a simple scell script that does MP3 encoding using
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lame.
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#!/bin/sh
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WAVENAME=$1
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MP3NAME=$1.mp3
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lame -m s -h --preset studio $WAVENAME $MP3NAME
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exit 0
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Another example script for ossrecord is a simple CGI script for live MP3
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streaming (from /dev/dsp).
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#!/bin/sh
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echo Content-Type: audio/mp3
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echo
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ossrecord -S -b16 -s48 - | lame -m j - -
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exit 0
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.SH NOTES
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The ossrecord executable is the same as the ossplay executable.
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Behaviour is decided by the name used to invoke the program.
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.SH SEE ALSO
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ossplay(1), ossmix(1), ossxmix(1)
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.SH FILES
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/usr/bin/ossrecord
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.SH AUTHOR
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4Front Technologies
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