ogg123
reads Ogg Vorbis audio files and decodes them to the devices specified
on the command line. By default,
ogg123
writes to the standard sound device, but output can be sent to any
number of devices. Files can be read from the file system, or URLs
can be streamed via HTTP. If a directory is given, all of the files in
it or its subdirectories will be played.
OPTIONS
--audio-buffer n
Use an output audio buffer of approximately 'n' kilobytes.
-@ playlist, --list playlist
Play all of the files named in the file 'playlist'. The playlist should have
one filename, directory name, or URL per line. Blank lines are permitted.
Directories will be treated in the same way as on the command line.
-b n, --buffer n
Use an input buffer of approximately 'n' kilobytes.
-p n, --prebuffer n
Prebuffer 'n' percent of the input buffer. Playback won't begin until
this prebuffer is complete.
-d device, --device device
Specify output device. See
DEVICES
section for a list of devices. Any number of devices may be specified.
-f filename, --file filename
Specify output file for file devices. The filename "-" writes to standard
out. If the file already exists,
ogg123
will overwrite it.
-h, --help
Show command help.
-k n, --skip n
Skip the first 'n' seconds. 'n' may also be in minutes:seconds or
hours:minutes:seconds form.
-K n, --end n
Stops playing 'n' seconds from the start of the stream. 'n' may also have the
same format as used in the
--skip
option.
-o option:value, --device-option option:value
Assigns the option
option
to
value
for the preceding device. See
DEVICES
for a list of valid options for each device.
-q, --quiet
Quiet mode. No messages are displayed.
-V, --version
Display version information.
-v, --verbose
Increase verbosity.
-x n, --nth
Play every 'n'th decoded block. Has the effect of playing audio at 'n' times
faster than normal speed.
-y n, --ntimes
Repeat every played block 'n' times. Has the effect of playing audio 'n'
times slower than normal speed. May be with -x for interesting fractional
speeds.
-z, --shuffle
Play files in pseudo-random order.
DEVICES
ogg123
supports a variety of audio output devices through libao. Only those
devices supported by the target platform will be available. The
-f
option may only be used with devices that write to files.
null
Null driver. All audio data is discarded. (Note: Audio data is not
written to
/dev/null
!) You could use this driver to test raw decoding speed without
output overhead.
oss
Open Sound System driver for Linux and FreeBSD.
Options:
dsp
DSP device for soundcard. Defaults to
/dev/dsp.
sun
Sun Audio driver for NetBSD, OpenBSD, and Solaris.
Options:
dev
Audio device for soundcard. Defaults to
/dev/audio.
alsa09
Advanced Linux Sound Architecture.
Options:
card
Sound card number. (Default = 0)
dev
Device number on the sound card. (Default = 0)
buf_size
Override the default buffer size (in bytes).
irix
IRIX audio driver.
arts
aRts Sound Daemon.
esd
Enlightened Sound Daemon.
Options:
host
The hostname where esd is running. This can include a port number
after a colon, as in "whizbang.com:555". (Default = localhost)
au
Sun audio file output. Writes the audio samples in AU format. The AU
format supports writing to unseekable files, like standard out. In
such circumstances, the AU header will specify the sample format, but
not the length of the recording.
raw
Raw sample output. Writes raw audio samples to a file.
Options:
byteorder
Choose big endian, little endian, or native byte order. (Default = "native")
wav
WAV file output. Writes the sound data to disk in uncompressed form.
If multiple files are played, all of them will be concatenated into
the same WAV file. WAV files cannot be written to unseekable files,
such as standard out. Use the AU format instead.
EXAMPLES
The
ogg123
command line is fairly flexible, perhaps confusingly so. Here are
some sample command lines and an explanation of what they do.
Play on the default soundcard:
ogg123 test.ogg
Play all of the files in the directory ~/music and its subdirectories.
ogg123 ~/music
Play a file using the OSS driver:
ogg123 -d oss test.ogg
Pass the "dsp" option to the OSS driver:
ogg123 -d oss -o dsp:/dev/mydsp
Use the ESD driver
ogg123 -d esd test.ogg
Use the WAV driver with the output file, "test.wav":
ogg123 -d wav -f test.wav test.ogg
Listen to a file while you write it to a WAV file:
ogg123 -d oss -d wav -f test.wav test.ogg
Note that options apply to the device declared to the left:
Create an echo effect with esd and a slow computer:
ogg123 -d esd -d esd test.ogg
INTERRUPT
You can abort
ogg123
at any time by pressing Ctrl-C. If you are playing multiple
files, this will stop the current file and begin playing the
next one. If you want to abort playing immediately instead
of skipping to the next file, press Ctrl-C within the first
second of the playback of a new file.
Note that the result of pressing Ctrl-C might not be audible
immediately, due to audio data buffering in the audio device.
This delay is system dependent, but it is usually not more
than one or two seconds.
FILES
/etc/libao.conf
Can be used to set the default output device for all libao programs.
~/.libao
Per-user config file to override the system wide output device settings.
BUGS
Piped WAV files may cause strange behavior in other programs. This is
because WAV files store the data length in the header. However, the
output driver does not know the length when it writes the header, and
there is no value that means "length unknown". Use the raw or au
output driver if you need to use ogg123 in a pipe.
