mpg123-alsa --version (return code: 0)
mpg123 1.25.6
mpg123-alsa --help (return code: 0)
High Performance MPEG 1.0/2.0/2.5 Audio Player for Layers 1, 2 and 3
version 1.25.6; written and copyright by Michael Hipp and others
free software (LGPL) without any warranty but with best wishes
usage: mpg123.bin [option(s)] [file(s) | URL(s) | -]
supported options [defaults in brackets]:
-v increase verbosity level -q quiet (don't print title)
-t testmode (no output) -s write to stdout
-w f write output as WAV file
-k n skip first n frames [0] -n n decode only n frames [all]
-c check range violations -y DISABLE resync on errors
-b n output buffer: n Kbytes [0] -f n change scalefactor [32768]
-r n set/force samplerate [auto]
-o m select output module -a d set audio device
-2 downsample 1:2 (22 kHz) -4 downsample 1:4 (11 kHz)
-d n play every n'th frame only -h n play every frame n times
-0 decode channel 0 (left) only -1 decode channel 1 (right) only
-m mix both channels (mono) -p p use HTTP proxy p [$HTTP_PROXY]
-@ f read filenames/URLs from f -T get realtime priority
-z shuffle play (with wildcards) -Z random play
-u a HTTP authentication string -E f Equalizer, data from file
-C enable control keys --no-gapless not skip junk/padding in mp3s
-? this help --version print name + version
See the manpage mpg123(1) or call mpg123.bin with --longhelp for more parameters and information.