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57 lines
2.5 KiB
Text
57 lines
2.5 KiB
Text
jack_capture is a program for recording sound files with JACK.
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* Autogenerated filenames are unique and humanly readable.
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* The 4GB size barrier for wav files is handled by continuing
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writing to new files when reaching 4GB.
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* Supports all soundfile formats supported by sndfile.
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(wav, aiff, ogg, flac, wavex, au, etc.) (option: -f <format>)
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* Supports mp3 by using liblame. (option: -mp3)
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* Option for writing raw 16 bit data to stdout. (option: -ws)
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* Built-in console meter, plus option for automatically starting and stopping
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the Meterbridge jack meter program. Port connections to Meterbridge
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are done automatically, and on the fly, by jack_capture.
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* jack_capture can connect to any input or output jack port.
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When "connecting" to a jack input port (i.e. a writable port), jack_capture
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constantly monitors which jack ports which are connected
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to that input port, and makes sure jack_capture is always
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connected to the same ports.
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In other words, jack_capture will reconnect its ports automatically during
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recording to match the connections of the ports.
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This is for instance convenient when recording the playback ports since
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jack_capture can be started first, and then other programs can start
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and stop at any moment while all sound still should be recorded.
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* No limit on the number of jack ports jack_capture can connect to.
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(I.e. the --port argument can be specified more than once, plus that
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it accepts wildcard arguments. For instance, jack_capture --port "*" will
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connect to all current jack ports, both input and output ports, except
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jack_capture's own ports.)
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* Buffers are automatically increased during runtime to prevent
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underruns and to avoid wasting memory by preallocating too much.
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* The disk thread is automatically reniced to a higher priority when
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using more than half of the buffer.
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* Significantly better recording performance than Ardour. (probably because
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jack_capture writes all channels into only one file and that it is
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not creating peak files). (tested on athlonXP)
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* No problem writing at least 256 channels of 32 bit wav at once to a
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local hard drive. (tested on icore7)
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Optional runtime dependencies are meterbridge and lame.
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This package uses POSIX filesystem capabilities to execute with
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elevated privileges (required for realtime audio processing). This
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may be considered a security/stability risk. Please read
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http://www.slackbuilds.org/caps/ for more information. To disable
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capabilities, pass SETCAP=no to the script.
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