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authorMarcel Saegebarth <marc@mos6581.de>2015-01-06 23:39:00 +0700
committerWilly Sudiarto Raharjo <willysr@slackbuilds.org>2015-01-07 23:12:09 +0700
commitb67c54bd18cb31734c268c8a09fc830ca23c1cf3 (patch)
treef122b702eb3ff056b9effca35a39a90a7591f2d4 /audio/jack_capture/README
parent2fbd3fc929fb8ca9528aae269964f085c7d705b5 (diff)
audio/jack_capture: Updated for version 0.9.71 + new maintainer.
Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
Diffstat (limited to 'audio/jack_capture/README')
-rw-r--r--audio/jack_capture/README59
1 files changed, 54 insertions, 5 deletions
diff --git a/audio/jack_capture/README b/audio/jack_capture/README
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@@ -1,8 +1,57 @@
-A handy audio recorder based on jack. Command line or GUI. Very low on
-resources. Able to write 256 channels to local hard drive (tested on
-iCore 7).
+jack_capture is a program for recording sound files with JACK.
-Meterbridge is a nice companion program (VU meters) unless you start
-the program from console.
+* Autogenerated filenames are unique and humanly readable.
+
+* The 4GB size barrier for wav files is handled by continuing
+ writing to new files when reaching 4GB.
+
+* Supports all soundfile formats supported by sndfile.
+ (wav, aiff, ogg, flac, wavex, au, etc.) (option: -f <format>)
+
+* Supports mp3 by using liblame. (option: -mp3)
+
+* Option for writing raw 16 bit data to stdout. (option: -ws)
+
+* Built-in console meter, plus option for automatically starting and stopping
+ the Meterbridge jack meter program. Port connections to Meterbridge
+ are done automatically, and on the fly, by jack_capture.
+
+* jack_capture can connect to any input or output jack port.
+
+ When "connecting" to a jack input port (i.e. a writable port), jack_capture
+ constantly monitors which jack ports which are connected
+ to that input port, and makes sure jack_capture is always
+ connected to the same ports.
+
+ In other words, jack_capture will reconnect its ports automatically during
+ recording to match the connections of the ports.
+ This is for instance convenient when recording the playback ports since
+ jack_capture can be started first, and then other programs can start
+ and stop at any moment while all sound still should be recorded.
+
+* No limit on the number of jack ports jack_capture can connect to.
+ (I.e. the --port argument can be specified more than once, plus that
+ it accepts wildcard arguments. For instance, jack_capture --port "*" will
+ connect to all current jack ports, both input and output ports, except
+ jack_capture's own ports.)
+
+* Buffers are automatically increased during runtime to prevent
+ underruns and to avoid wasting memory by preallocating too much.
+
+* The disk thread is automatically reniced to a higher priority when
+ using more than half of the buffer.
+
+* Significantly better recording performance than Ardour. (probably because
+ jack_capture writes all channels into only one file and that it is
+ not creating peak files). (tested on athlonXP)
+
+* No problem writing at least 256 channels of 32 bit wav at once to a
+ local hard drive. (tested on icore7)
Optional runtime dependencies are meterbridge and lame.
+
+This package uses POSIX filesystem capabilities to execute with
+elevated privileges (required for realtime audio processing). This
+may be considered a security/stability risk. Please read
+http://www.slackbuilds.org/caps/ for more information. To disable
+capabilities, pass SETCAP=no to the script.