{ "content": [ { "type": "text", "text": "# mpg123-jack(1) (man)\n\n**Summary:** mpg123 - play audio MPEG 1.0/2.0/2.5 stream (layers 1, 2 and 3)\n\n**Synopsis:** mpg123 [ options ] file-or-URL...\n\n## Section Outline\n\n- **NAME** (2 lines)\n- **SYNOPSIS** (2 lines)\n- **DESCRIPTION** (4 lines)\n- **OPERANDS** (7 lines)\n- **OPTIONS** (5 lines)\n- **INPUT OPTIONS** (1 lines) — 50 subsections\n - -k --skip (2 lines)\n - -n --frames (2 lines)\n - --fuzzy (5 lines)\n - -y --no-resync (7 lines)\n - -F --no-frankenstein (17 lines)\n - -p --proxy (6 lines)\n - -u --auth (3 lines)\n - --ignore-mime (3 lines)\n - --no-icy-meta (12 lines)\n - --no-seekbuffer (11 lines)\n - -l --listentry (4 lines)\n - --continue (15 lines)\n - --keep-open (5 lines)\n - -z --shuffle (3 lines)\n - -Z --random (4 lines)\n - -i, --index (15 lines)\n - OUTPUT and PROCESSING OPTIONS (1 lines)\n - -o --output (3 lines)\n - --list-modules (2 lines)\n - --list-devices (4 lines)\n - -a --audiodevice (4 lines)\n - -s --stdout (5 lines)\n - -O --outfile (3 lines)\n - -w --wav (18 lines)\n - --reopen (8 lines)\n - --test-cpu (2 lines)\n - --list-cpu (2 lines)\n - -g --gain (5 lines)\n - -f --scale (2 lines)\n - --rva-mix, --rva-radio (5 lines)\n - --rva-album, --rva-audiophile (6 lines)\n - -0 --single0 -1 --single1 (3 lines)\n - -m --mono --mix --singlemix (2 lines)\n - --stereo (2 lines)\n - -r --rate (14 lines)\n - -2 --2to1 -4 --4to1 (12 lines)\n - --float (2 lines)\n - -e --encoding (6 lines)\n - -d --doublespeed (5 lines)\n - -h --halfspeed (5 lines)\n - -E --equalizer (11 lines)\n - --gapless (4 lines)\n - --no-gapless (3 lines)\n - --no-infoframe (4 lines)\n - -D --delay (2 lines)\n - -o --headphones (2 lines)\n - -o --speaker (2 lines)\n - -o --lineout (2 lines)\n - -b --buffer (17 lines)\n - --smooth (4 lines)\n- **MISC OPTIONS** (1 lines) — 14 subsections\n - -t --test (2 lines)\n - -c --check (3 lines)\n - -v --verbose (3 lines)\n - -q --quiet (2 lines)\n - -C --control (6 lines)\n - --no-control (2 lines)\n - --title (7 lines)\n - --long-tag (5 lines)\n - -R --remote (5 lines)\n - --remote-err (7 lines)\n - --aggressive (2 lines)\n - -T --realtime (6 lines)\n - --longhelp (2 lines)\n - --version (2 lines)\n- **HTTP SUPPORT** (23 lines)\n- **INTERRUPT** (10 lines)\n- **PLAYBACK STATUS LINE** (13 lines) — 7 subsections\n - 0291+0955 (2 lines)\n - 00:01.68+00:28.22 (2 lines)\n - [00:05.30] (4 lines)\n - 100=085 (2 lines)\n - 192 kb/s (7 lines)\n - 18 clip (3 lines)\n - p+0.014 (3 lines)\n- **NOTES** (14 lines)\n- **EXIT CODE** (17 lines)\n- **BUGS** (8 lines)\n- **AUTHORS** (8 lines)\n- **LICENSE** (2 lines)\n- **WEBSITE** (6 lines)\n\n## Full Content\n\n### NAME\n\nmpg123 - play audio MPEG 1.0/2.0/2.5 stream (layers 1, 2 and 3)\n\n### SYNOPSIS\n\nmpg123 [ options ] file-or-URL...\n\n### DESCRIPTION\n\nmpg123 reads one or more files (or standard input if ``-'' is specified) or URLs and plays\nthem on the audio device (default) or outputs them to stdout. file/URL is assumed to be an\nMPEG audio bit stream.\n\n### OPERANDS\n\nThe following operands are supported:\n\nfile(s) The path name(s) of one or more input files. They must be valid MPEG-1.0/2.0/2.5 au‐\ndio layer 1, 2 or 3 bit streams. If a dash ``-'' is specified, MPEG data will be\nread from the standard input. Furthermore, any name starting with ``http://'' is\nrecognized as URL (see next section).\n\n### OPTIONS\n\nmpg123 options may be either the traditional POSIX one letter options, or the GNU style long\noptions. POSIX style options start with a single ``-'', while GNU long options start with\n``--''. Option arguments (if needed) follow separated by whitespace (not ``=''). Note that\nsome options can be absent from your installation when disabled in the build process.\n\n### INPUT OPTIONS\n\n#### -k --skip\n\nSkip first num frames. By default the decoding starts at the first frame.\n\n#### -n --frames\n\nDecode only num frames. By default the complete stream is decoded.\n\n#### --fuzzy\n\nEnable fuzzy seeks (guessing byte offsets or using approximate seek points from Xing\nTOC). Without that, seeks need a first scan through the file before they can jump at\npositions. You can decide here: sample-accurate operation with gapless features or\nfaster (fuzzy) seeking.\n\n#### -y --no-resync\n\nDo NOT try to resync and continue decoding if an error occurs in the input file. Nor‐\nmally, mpg123 tries to keep the playback alive at all costs, including skipping in‐\nvalid material and searching new header when something goes wrong. With this switch\nyou can make it bail out on data errors (and perhaps spare your ears a bad time). Note\nthat this switch has been renamed from --resync. The old name still works, but is not\nadvertised or recommended to use (subject to removal in future).\n\n#### -F --no-frankenstein\n\nDisable support for Frankenstein streams. Normally, mpg123 stays true to the concept\nof MPEG audio being just a concatenation of MPEG frames. It will continue decoding\neven if the type of MPEG frames varies wildly. With this switch, it will only decode\nthe input as long as it does not change its character (from layer I to layer III,\nchanging sampling rate, from mono to stereo), silently assuming end of stream on such\noccasion. The switch also stops decoding of compatible MPEG frames if there was an\nInfo frame (Xing header, Lame tag) that contained a length of the track in MPEG\nframes. This comes a bit closer to the notion of a MP3 file as a defined collection\nof MPEG frames that belong together, but gets rid of the flexibility that can be fun\nat times but mostly is hell for the programmer of the parser and decoder ...\n\n--resync-limit bytes\nSet number of bytes to search for valid MPEG data once lost in stream; <0 means search\nwhole stream. If you know there are huge chunks of invalid data in your files... here\nis your hammer. Note: Only since version 1.14 this also increases the amount of junk\nskipped on beginning.\n\n#### -p --proxy\n\nThe specified proxy will be used for HTTP requests. It should be specified as full\nURL (``http://host.domain:port/''), but the ``http://'' prefix, the port number and\nthe trailing slash are optional (the default port is 80). Specifying none means not\nto use any proxy, and to retrieve files directly from the respective servers. See\nalso the ``HTTP SUPPORT'' section.\n\n#### -u --auth\n\nHTTP authentication to use when receiving files via HTTP. The format used is\nuser:password.\n\n#### --ignore-mime\n\nIgnore MIME types given by HTTP server. If you know better and want mpg123 to decode\nsomething the server thinks is image/png, then just do it.\n\n#### --no-icy-meta\n\nDo not accept ICY meta data.\n\n--streamdump filename\nDump a copy of the input data (as read by libmpg123) to the given file. This enables\nyou to store a web stream to disk while playing, or just create a concatenation of the\nlocal files you play for ... why not?\n\n--icy-interval bytes\nThis setting enables you to play a stream dump containing ICY metadata at the given\ninterval in bytes (the value of the icy-metaint HTTP response header). Without it,\nsuch a stream will play, but will cause regular decoding glitches with resync.\n\n#### --no-seekbuffer\n\nDisable the default micro-buffering of non-seekable streams that gives the parser a\nsafer footing.\n\n-@ file, --list file\nRead filenames and/or URLs of MPEG audio streams from the specified file in addition\nto the ones specified on the command line (if any). Note that file can be either an\nordinary file, a dash ``-'' to indicate that a list of filenames/URLs is to be read\nfrom the standard input, or an URL pointing to a an appropriate list file. Note: only\none -@ option can be used (if more than one is specified, only the last one will be\nrecognized).\n\n#### -l --listentry\n\nOf the playlist, play specified entry only. n is the number of entry starting at 1. A\nvalue of 0 is the default and means playing the whole list, a negative value means\nshowing of the list of titles with their numbers...\n\n#### --continue\n\nEnable playlist continuation mode. This changes frame skipping to apply only to the\nfirst track and also continues to play following tracks in playlist after the selected\none. Also, the option to play a number of frames only applies to the whole playlist.\nBasically, this tries to treat the playlist more like one big stream (like, an audio\nbook). The current track number in list (1-based) and frame number (0-based) are\nprinted at exit (useful if you interrupted playback and want to continue later). Note\nthat the continuation info is printed to standard output unless the switch for piping\naudio data to standard out is used. Also, it really makes sense to work with actual\nplaylist files instead of lists of file names as arguments, to keep track positions\nconsistent.\n\n--loop times\nfor looping track(s) a certain number of times, < 0 means infinite loop (not with\n--random!).\n\n#### --keep-open\n\nFor remote control mode: Keep loaded file open after reaching end.\n\n--timeout seconds\nTimeout in (integer) seconds before declaring a stream dead (if <= 0, wait forever).\n\n#### -z --shuffle\n\nShuffle play. Randomly shuffles the order of files specified on the command line, or\nin the list file.\n\n#### -Z --random\n\nContinuous random play. Keeps picking a random file from the command line or the play\nlist. Unlike shuffle play above, random play never ends, and plays individual songs\nmore than once.\n\n#### -i, --index\n\nIndex / scan through the track before playback. This fills the index table for seek‐\ning (if enabled in libmpg123) and may make the operating system cache the file con‐\ntents for smoother operating on playback.\n\n--index-size size\nSet the number of entries in the seek frame index table.\n\n--preframes num\nSet the number of frames to be read as lead-in before a seeked-to position. This\nserves to fill the layer 3 bit reservoir, which is needed to faithfully reproduce a\ncertain sample at a certain position. Note that for layer 3, a minimum of 1 is en‐\nforced (because of frame overlap), and for layer 1 and 2, this is limited to 2 (no bit\nreservoir in that case, but engine spin-up anyway).\n\n#### OUTPUT and PROCESSING OPTIONS\n\n#### -o --output\n\nSelect audio output module. You can provide a comma-separated list to use the first\none that works. Also see -a.\n\n#### --list-modules\n\nList the available modules.\n\n#### --list-devices\n\nList the available output devices for given output module. If there is no functional‐\nity to list devices in the chosen module, an error will be printed and mpg123 will\nexit with a non-zero code.\n\n#### -a --audiodevice\n\nSpecify the audio device to use. The default as well as the possible values depend on\nthe active output. For the JACK output, a comma-separated list of ports to connect to\n(for each channel) can be specified.\n\n#### -s --stdout\n\nThe decoded audio samples are written to standard output, instead of playing them\nthrough the audio device. This option must be used if your audio hardware is not sup‐\nported by mpg123. The output format per default is raw (headerless) linear PCM audio\ndata, 16 bit, stereo, host byte order (you can force mono or 8bit).\n\n#### -O --outfile\n\nWrite raw output into a file (instead of simply redirecting standard output to a file\nwith the shell).\n\n#### -w --wav\n\nWrite output as WAV file. This will cause the MPEG stream to be decoded and saved as\nfile file , or standard output if - is used as file name. You can also use --au and\n--cdr for AU and CDR format, respectively. Note that WAV/AU writing to non-seekable\nfiles, or redirected stdout, needs some thought. Since 1.16.0, the logic changed to\nwriting the header with the first actual data. This avoids spurious WAV headers in a\npipe, for example. The result of decoding nothing to WAV/AU is a file consisting just\nof the header when it is seekable and really nothing when not (not even a header).\nCorrectly writing data with prophetic headers to stdout is no easy business.\n\n--au file\nDoes not play the MPEG file but writes it to file in SUN audio format. If - is used\nas the filename, the AU file is written to stdout. See paragraph about WAV writing for\nheader fun with non-seekable streams.\n\n--cdr file\nDoes not play the MPEG file but writes it to file as a CDR file. If - is used as the\nfilename, the CDR file is written to stdout.\n\n#### --reopen\n\nForces reopen of the audiodevice after ever song\n\n--cpu decoder-type\nSelects a certain decoder (optimized for specific CPU), for example i586 or MMX. The\nlist of available decoders can vary; depending on the build and what your CPU sup‐\nports. This option is only available when the build actually includes several opti‐\nmized decoders.\n\n#### --test-cpu\n\nTests your CPU and prints a list of possible choices for --cpu.\n\n#### --list-cpu\n\nLists all available decoder choices, regardless of support by your CPU.\n\n#### -g --gain\n\n[DEPRECATED] Set audio hardware output gain (default: don't change). The unit of the\ngain value is hardware and output module dependent. (This parameter is only provided\nfor backwards compatibility and may be removed in the future without prior notice. Use\nthe audio player for playing and a mixer app for mixing, UNIX style!)\n\n#### -f --scale\n\nChange scale factor (default: 32768).\n\n#### --rva-mix, --rva-radio\n\nEnable RVA (relative volume adjustment) using the values stored for ReplayGain radio\nmode / mix mode with all tracks roughly equal loudness. The first valid information\nfound in ID3V2 Tags (Comment named RVA or the RVA2 frame) or ReplayGain header in\nLame/Info Tag is used.\n\n#### --rva-album, --rva-audiophile\n\nEnable RVA (relative volume adjustment) using the values stored for ReplayGain audio‐\nphile mode / album mode with usually the effect of adjusting album loudness but keep‐\ning relative loudness inside album. The first valid information found in ID3V2 Tags\n(Comment named RVAALBUM or the RVA2 frame) or ReplayGain header in Lame/Info Tag is\nused.\n\n#### -0 --single0 -1 --single1\n\nDecode only channel 0 (left) or channel 1 (right), respectively. These options are\navailable for stereo MPEG streams only.\n\n#### -m --mono --mix --singlemix\n\nMix both channels / decode mono. It takes less CPU time than full stereo decoding.\n\n#### --stereo\n\nForce stereo output\n\n#### -r --rate\n\nSet sample rate (default: automatic). You may want to change this if you need a con‐\nstant bitrate independent of the mpeg stream rate. mpg123 automagically converts the\nrate. You should then combine this with --stereo or --mono.\n\n--resample method\nSet resampling method to employ if forcing an output rate. Choices (case-insensitive)\nare NtoM, dirty, and fine. The fine resampler is the default. It employs libsyn123's\nlow-latency fairly efficient resampler to postprocess the output from libmpg123 in‐\nstead of the fast but very crude NtoM decoder (drop sample method) that mpg123 offers\nsince decades. If you are really low on CPU time, choose NtoM, as the resampler usu‐\nally needs more time than the MPEG decoder itself. The mpg123 program is smart enough\nto combine the 2to1 or 4to1 downsampling modes with the postprocessing for extreme\ndownsampling.\n\n#### -2 --2to1 -4 --4to1\n\nPerforms a downsampling of ratio 2:1 (22 kHz from 44.1 kHz) or 4:1 (11 kHz) on the\noutput stream, respectively. Saves some CPU cycles, but of course throws away the high\nfrequencies, as the decoder does not bother producing them.\n\n--pitch value\nSet a pitch change (speedup/down, 0 is neutral; 0.05 is 5% speedup). When not enforc‐\ning an output rate, this changes the output sampling rate, so it only works in the\nrange your audio system/hardware supports. When you combine this with a fixed output\nrate, it modifies a software resampling ratio instead.\n\n--8bit Forces 8bit output\n\n#### --float\n\nForces f32 encoding\n\n#### -e --encoding\n\nChoose output sample encoding. Possible values look like f32 (32-bit floating point),\ns32 (32-bit signed integer), u32 (32-bit unsigned integer) and the variants with dif‐\nferent numbers of bits (s24, u24, s16, u16, s8, u8) and also special variants like\nulaw and alaw 8-bit. See the output of mpg123's longhelp for actually available en‐\ncodings.\n\n#### -d --doublespeed\n\nOnly play every n'th frame. This will cause the MPEG stream to be played n times\nfaster, which can be used for special effects. Can also be combined with the --half‐‐\nspeed option to play 3 out of 4 frames etc. Don't expect great sound quality when us‐\ning this option.\n\n#### -h --halfspeed\n\nPlay each frame n times. This will cause the MPEG stream to be played at 1/n'th speed\n(n times slower), which can be used for special effects. Can also be combined with the\n--doublespeed option to double every third frame or things like that. Don't expect\ngreat sound quality when using this option.\n\n#### -E --equalizer\n\nEnables equalization, taken from file. The file needs to contain 32 lines of data,\nadditional comment lines may be prefixed with #. Each data line consists of two\nfloating-point entries, separated by whitespace. They specify the multipliers for\nleft and right channel of a certain frequency band, respectively. The first line cor‐\nresponds to the lowest, the 32nd to the highest frequency band. Note that you can\ncontrol the equalizer interactively with the generic control interface. Also note\nthat these are the 32 bands of the MPEG codec, not spaced like you would see for a\nusual graphic equalizer. The upside is that there is zero computational cost in addi‐\ntion to decoding. The downside is that you roughly have bass in band 0, (upper) mids\nin band 1, treble in all others.\n\n#### --gapless\n\nEnable code that cuts (junk) samples at beginning and end of tracks, enabling gapless\ntransitions between MPEG files when encoder padding and codec delays would prevent it.\nThis is enabled per default beginning with mpg123 version 1.0.0 .\n\n#### --no-gapless\n\nDisable the gapless code. That gives you MP3 decodings that include encoder delay and\npadding plus mpg123's decoder delay.\n\n#### --no-infoframe\n\nDo not parse the Xing/Lame/VBR/Info frame, decode it instead just like a stupid old\nMP3 hardware player. This implies disabling of gapless playback as the necessary in‐\nformation is in said metadata frame.\n\n#### -D --delay\n\nInsert a delay of n seconds before each track.\n\n#### -o --headphones\n\nDirect audio output to the headphone connector (some hardware only; AIX, HP, SUN).\n\n#### -o --speaker\n\nDirect audio output to the speaker (some hardware only; AIX, HP, SUN).\n\n#### -o --lineout\n\nDirect audio output to the line-out connector (some hardware only; AIX, HP, SUN).\n\n#### -b --buffer\n\nUse an audio output buffer of size Kbytes. This is useful to bypass short periods of\nheavy system activity, which would normally cause the audio output to be interrupted.\nYou should specify a buffer size of at least 1024 (i.e. 1 Mb, which equals about 6\nseconds of audio data) or more; less than about 300 does not make much sense. The de‐\nfault is 0, which turns buffering off.\n\n--preload fraction\nWait for the buffer to be filled to fraction before starting playback (fraction be‐\ntween 0 and 1). You can tune this prebuffering to either get faster sound to your ears\nor safer uninterrupted web radio. Default is 0.2 (wait for 20 % of buffer to be full,\nchanged from 1 in version 1.23).\n\n--devbuffer seconds\nSet device buffer in seconds; <= 0 means default value. This is the small buffer be‐\ntween the application and the audio backend, possibly directly related to hardware\nbuffers.\n\n#### --smooth\n\nKeep buffer over track boundaries -- meaning, do not empty the buffer between tracks\nfor possibly some added smoothness.\n\n### MISC OPTIONS\n\n#### -t --test\n\nTest mode. The audio stream is decoded, but no output occurs.\n\n#### -c --check\n\nCheck for filter range violations (clipping), and report them for each frame if any\noccur.\n\n#### -v --verbose\n\nIncrease the verbosity level. For example, displays the frame numbers during decod‐\ning.\n\n#### -q --quiet\n\nQuiet. Suppress diagnostic messages.\n\n#### -C --control\n\nEnable terminal control keys. This is enabled automatically if a terminal is detected.\nBy default use 's' or the space bar to stop/restart (pause, unpause) playback, 'f' to\njump forward to the next song, 'b' to jump back to the beginning of the song, ',' to\nrewind, '.' to fast forward, and 'q' to quit. Type 'h' for a full list of available\ncontrols.\n\n#### --no-control\n\nDisable terminal control even if terminal is detected.\n\n#### --title\n\nIn an xterm, rxvt, screen, iris-ansi (compatible, TERM environment variable is exam‐\nined), change the window's title to the name of song currently playing.\n\n--name name\nSet the name of this instance, possibly used in various places. This sets the client\nname for JACK output.\n\n#### --long-tag\n\nDisplay ID3 tag info always in long format with one line per item (artist, title, ...)\n\n--utf8 Regardless of environment, print metadata in UTF-8 (otherwise, when not using UTF-8\nlocale, you'll get ASCII stripdown).\n\n#### -R --remote\n\nActivate generic control interface. mpg123 will then read and execute commands from\nstdin. Basic usage is ``load '' to play some file and the obvious\n``pause'', ``command. ``jump '' will jump/seek to a given point (MPEG frame\nnumber). Issue ``help'' to get a full list of commands and syntax.\n\n#### --remote-err\n\nPrint responses for generic control mode to standard error, not standard out. This is\nautomatically triggered when using -s.\n\n--fifo path\nCreate a fifo / named pipe on the given path and use that for reading commands instead\nof standard input.\n\n#### --aggressive\n\nTries to get higher priority\n\n#### -T --realtime\n\nTries to gain realtime priority. This option usually requires root privileges to have\nany effect.\n\n-?, --help\nShows short usage instructions.\n\n#### --longhelp\n\nShows long usage instructions.\n\n#### --version\n\nPrint the version string.\n\n### HTTP SUPPORT\n\nIn addition to reading MPEG audio streams from ordinary files and from the standard input,\nmpg123 supports retrieval of MPEG audio files or playlists via the HTTP protocol, which is\nused in the World Wide Web (WWW). Such files are specified using a so-called URL, which\nstarts with ``http://''. When a file with that prefix is encountered, mpg123 attempts to\nopen an HTTP connection to the server in order to retrieve that file to decode and play it.\n\nIt is often useful to retrieve files through a WWW cache or so-called proxy. To accomplish\nthis, mpg123 examines the environment for variables named MP3HTTPPROXY, httpproxy and\nHTTPPROXY, in this order. The value of the first one that is set will be used as proxy\nspecification. To override this, you can use the -p command line option (see the ``OPTIONS''\nsection). Specifying -p none will enforce contacting the server directly without using any\nproxy, even if one of the above environment variables is set.\n\nNote that, in order to play MPEG audio files from a WWW server, it is necessary that the con‐\nnection to that server is fast enough. For example, a 128 kbit/s MPEG file requires the net‐\nwork connection to be at least 128 kbit/s (16 kbyte/s) plus protocol overhead. If you suffer\nfrom short network outages, you should try the -b option (buffer) to bypass such outages. If\nyour network connection is generally not fast enough to retrieve MPEG audio files in real‐\ntime, you can first download the files to your local harddisk (e.g. using wget(1)) and then\nplay them from there.\n\nIf authentication is needed to access the file it can be specified with the -u user:pass.\n\n### INTERRUPT\n\nWhen in terminal control mode, you can quit via pressing the q key, while any time you can\nabort mpg123 by pressing Ctrl-C. If not in terminal control mode, this will skip to the next\nfile (if any). If you want to abort playing immediately in that case, press Ctrl-C twice in\nshort succession (within about one second).\n\nNote that the result of quitting mpg123 pressing Ctrl-C might not be audible immediately, due\nto audio data buffering in the audio device. This delay is system dependent, but it is usu‐\nally not more than one or two seconds.\n\n### PLAYBACK STATUS LINE\n\nIn verbose mode, mpg123 updates a line with various information centering around the current\nplayback position. On any decent terminal, the line also works as a progress bar in the cur‐\nrent file by reversing video for a fraction of the line according to the current position. An\nexample for a full line is this:\n\n> 0291+0955 00:01.68+00:28.22 [00:05.30] mix 100=085 192 kb/s 576 B acc 18 clip\np+0.014\n\nThe information consists of, in order:\n\n> single-character playback state (``>'' for playing, ``='' for pausing/looping, ``''\nfor stopped)\n\n#### 0291+0955\n\ncurrent frame offset and number of remaining frames after the plus sign\n\n#### 00:01.68+00:28.22\n\ncurrent position from and remaining time in human terms (hours, minutes, seconds)\n\n#### [00:05.30]\n\nfill of the output buffer in terms of playback time, if the buffer is enabled\n\nmix selected RVA mode (possible values: mix, alb (album), and --- (neutral, off))\n\n#### 100=085\n\nset volume and the RVA-modified effective volume after the equal sign\n\n#### 192 kb/s\n\ncurrent bitrate\n\n576 B size of current frame in bytes\n\nacc if positions are accurate, possible values are ``acc'' for accurate positions or\n``fuz'' for fuzzy (with guessed byte offsets using mean frame size)\n\n#### 18 clip\n\namount of clipped samples, non-zero only if decoder reports that (generic does, some\noptimized ones not)\n\n#### p+0.014\n\npitch change (increased/decreased playback sampling rate on user request)\n\n### NOTES\n\nMPEG audio decoding requires a good deal of CPU performance, especially layer-3. To decode\nit in realtime, you should have at least an i486DX4, Pentium, Alpha, SuperSparc or equivalent\nprocessor. You can also use the -m option to decode mono only, which reduces the CPU load\nsomewhat for layer-3 streams. See also the -2 and -4 options.\n\nIf everything else fails, have mpg123 decode to a file and then use an appropriate utility to\nplay that file with less CPU load. Most probably you can configure mpg123 to produce a for‐\nmat suitable for your audio device (see above about encodings and sampling rates).\n\nIf your system is generally fast enough to decode in realtime, but there are sometimes peri‐\nods of heavy system load (such as cronjobs, users logging in remotely, starting of ``big''\nprograms etc.) causing the audio output to be interrupted, then you should use the -b option\nto use a buffer of reasonable size (at least 1000 Kbytes).\n\n### EXIT CODE\n\nUp to version 1.25.x, mpg123 always returned exit code 0 also for complete junk on the input\nside. Fatal errors were only considered for output. With version 1.26.0, this changed to the\nbehaviour described below.\n\nWhen not using the remote control interface (which returns input errors as text messages),\nthe process exit code is zero (success) only if all tracks in a playlist had at least one\nframe parsed, even if it did not decode cleanly, or are empty, MPEG-wise (perhaps only meta‐\ndata, or really an empty file). When you decode nothing, nothing is the result and that is\nfine. When a track later aborts because of parser errors or breakdown of the network communi‐\ncation, this is treated as end of a track, but does not make the process as such fail. One\nreally bad (or non-existing) stream in the playlist results in a non-zero error code, consis‐\ntent with other UNIX tools.\n\nAn error in audio output results in the process ending with a non-zero exit code immediately,\nregardless of how much data has been successfully played before. The forgiveness is only on\nthe input side.\n\n### BUGS\n\nMostly MPEG-1 layer 2 and 3 are tested in real life. Please report any issues and provide\ntest files to help fixing them.\n\nNo CRC error checking is performed.\n\nSome platforms lack audio hardware support; you may be able to use the -s switch to feed the\ndecoded data to a program that can play it on your audio device.\n\n### AUTHORS\n\nMaintainer:\nThomas Orgis , \n\nOriginal Creator:\nMichael Hipp\n\nUses code or ideas from various people, see the AUTHORS file accompanying the source code.\n\n### LICENSE\n\nmpg123 is licensed under the GNU Lesser/Library General Public License, LGPL, version 2.1 .\n\n### WEBSITE\n\nhttp://www.mpg123.org\nhttp://sourceforge.net/projects/mpg123\n\n\n\n26 Apr 2020 mpg123(1)\n\n" } ], "structuredContent": { "command": "mpg123-jack", "section": "1", "mode": "man", "summary": "mpg123 - play audio MPEG 1.0/2.0/2.5 stream (layers 1, 2 and 3)", "synopsis": "mpg123 [ options ] file-or-URL...", "flags": [ { "flag": "-k", "long": "--skip", "arg": null, "description": "Skip first num frames. By default the decoding starts at the first frame." }, { "flag": "-n", "long": "--frames", "arg": null, "description": "Decode only num frames. By default the complete stream is decoded." }, { "flag": "", "long": "--fuzzy", "arg": null, "description": "Enable fuzzy seeks (guessing byte offsets or using approximate seek points from Xing TOC). Without that, seeks need a first scan through the file before they can jump at positions. You can decide here: sample-accurate operation with gapless features or faster (fuzzy) seeking." }, { "flag": "-y", "long": "--no-resync", "arg": null, "description": "Do NOT try to resync and continue decoding if an error occurs in the input file. Nor‐ mally, mpg123 tries to keep the playback alive at all costs, including skipping in‐ valid material and searching new header when something goes wrong. With this switch you can make it bail out on data errors (and perhaps spare your ears a bad time). Note that this switch has been renamed from --resync. The old name still works, but is not advertised or recommended to use (subject to removal in future)." }, { "flag": "-F", "long": "--no-frankenstein", "arg": null, "description": "Disable support for Frankenstein streams. Normally, mpg123 stays true to the concept of MPEG audio being just a concatenation of MPEG frames. It will continue decoding even if the type of MPEG frames varies wildly. With this switch, it will only decode the input as long as it does not change its character (from layer I to layer III, changing sampling rate, from mono to stereo), silently assuming end of stream on such occasion. The switch also stops decoding of compatible MPEG frames if there was an Info frame (Xing header, Lame tag) that contained a length of the track in MPEG frames. This comes a bit closer to the notion of a MP3 file as a defined collection of MPEG frames that belong together, but gets rid of the flexibility that can be fun at times but mostly is hell for the programmer of the parser and decoder ... --resync-limit bytes Set number of bytes to search for valid MPEG data once lost in stream; <0 means search whole stream. If you know there are huge chunks of invalid data in your files... here is your hammer. Note: Only since version 1.14 this also increases the amount of junk skipped on beginning." }, { "flag": "-p", "long": "--proxy", "arg": null, "description": "The specified proxy will be used for HTTP requests. It should be specified as full URL (``http://host.domain:port/''), but the ``http://'' prefix, the port number and the trailing slash are optional (the default port is 80). Specifying none means not to use any proxy, and to retrieve files directly from the respective servers. See also the ``HTTP SUPPORT'' section." }, { "flag": "-u", "long": "--auth", "arg": null, "description": "HTTP authentication to use when receiving files via HTTP. The format used is user:password." }, { "flag": "", "long": "--ignore-mime", "arg": null, "description": "Ignore MIME types given by HTTP server. If you know better and want mpg123 to decode something the server thinks is image/png, then just do it." }, { "flag": "", "long": "--no-icy-meta", "arg": null, "description": "Do not accept ICY meta data. --streamdump filename Dump a copy of the input data (as read by libmpg123) to the given file. This enables you to store a web stream to disk while playing, or just create a concatenation of the local files you play for ... why not? --icy-interval bytes This setting enables you to play a stream dump containing ICY metadata at the given interval in bytes (the value of the icy-metaint HTTP response header). Without it, such a stream will play, but will cause regular decoding glitches with resync." }, { "flag": "", "long": "--no-seekbuffer", "arg": null, "description": "Disable the default micro-buffering of non-seekable streams that gives the parser a safer footing. -@ file, --list file Read filenames and/or URLs of MPEG audio streams from the specified file in addition to the ones specified on the command line (if any). Note that file can be either an ordinary file, a dash ``-'' to indicate that a list of filenames/URLs is to be read from the standard input, or an URL pointing to a an appropriate list file. Note: only one -@ option can be used (if more than one is specified, only the last one will be recognized)." }, { "flag": "-l", "long": "--listentry", "arg": null, "description": "Of the playlist, play specified entry only. n is the number of entry starting at 1. A value of 0 is the default and means playing the whole list, a negative value means showing of the list of titles with their numbers..." }, { "flag": "", "long": "--continue", "arg": null, "description": "Enable playlist continuation mode. This changes frame skipping to apply only to the first track and also continues to play following tracks in playlist after the selected one. Also, the option to play a number of frames only applies to the whole playlist. Basically, this tries to treat the playlist more like one big stream (like, an audio book). The current track number in list (1-based) and frame number (0-based) are printed at exit (useful if you interrupted playback and want to continue later). Note that the continuation info is printed to standard output unless the switch for piping audio data to standard out is used. Also, it really makes sense to work with actual playlist files instead of lists of file names as arguments, to keep track positions consistent. --loop times for looping track(s) a certain number of times, < 0 means infinite loop (not with --random!)." }, { "flag": "", "long": "--keep-open", "arg": null, "description": "For remote control mode: Keep loaded file open after reaching end. --timeout seconds Timeout in (integer) seconds before declaring a stream dead (if <= 0, wait forever)." }, { "flag": "-z", "long": "--shuffle", "arg": null, "description": "Shuffle play. Randomly shuffles the order of files specified on the command line, or in the list file." }, { "flag": "-Z", "long": "--random", "arg": null, "description": "Continuous random play. Keeps picking a random file from the command line or the play list. Unlike shuffle play above, random play never ends, and plays individual songs more than once." }, { "flag": "-i", "long": "--index", "arg": null, "description": "Index / scan through the track before playback. This fills the index table for seek‐ ing (if enabled in libmpg123) and may make the operating system cache the file con‐ tents for smoother operating on playback. --index-size size Set the number of entries in the seek frame index table. --preframes num Set the number of frames to be read as lead-in before a seeked-to position. This serves to fill the layer 3 bit reservoir, which is needed to faithfully reproduce a certain sample at a certain position. Note that for layer 3, a minimum of 1 is en‐ forced (because of frame overlap), and for layer 1 and 2, this is limited to 2 (no bit reservoir in that case, but engine spin-up anyway)." }, { "flag": "-o", "long": "--output", "arg": null, "description": "Select audio output module. You can provide a comma-separated list to use the first one that works. Also see -a." }, { "flag": "", "long": "--list-modules", "arg": null, "description": "List the available modules." }, { "flag": "", "long": "--list-devices", "arg": null, "description": "List the available output devices for given output module. If there is no functional‐ ity to list devices in the chosen module, an error will be printed and mpg123 will exit with a non-zero code." }, { "flag": "-a", "long": "--audiodevice", "arg": null, "description": "Specify the audio device to use. The default as well as the possible values depend on the active output. For the JACK output, a comma-separated list of ports to connect to (for each channel) can be specified." }, { "flag": "-s", "long": "--stdout", "arg": null, "description": "The decoded audio samples are written to standard output, instead of playing them through the audio device. This option must be used if your audio hardware is not sup‐ ported by mpg123. The output format per default is raw (headerless) linear PCM audio data, 16 bit, stereo, host byte order (you can force mono or 8bit)." }, { "flag": "-O", "long": "--outfile", "arg": null, "description": "Write raw output into a file (instead of simply redirecting standard output to a file with the shell)." }, { "flag": "-w", "long": "--wav", "arg": null, "description": "Write output as WAV file. This will cause the MPEG stream to be decoded and saved as file file , or standard output if - is used as file name. You can also use --au and --cdr for AU and CDR format, respectively. Note that WAV/AU writing to non-seekable files, or redirected stdout, needs some thought. Since 1.16.0, the logic changed to writing the header with the first actual data. This avoids spurious WAV headers in a pipe, for example. The result of decoding nothing to WAV/AU is a file consisting just of the header when it is seekable and really nothing when not (not even a header). Correctly writing data with prophetic headers to stdout is no easy business. --au file Does not play the MPEG file but writes it to file in SUN audio format. If - is used as the filename, the AU file is written to stdout. See paragraph about WAV writing for header fun with non-seekable streams. --cdr file Does not play the MPEG file but writes it to file as a CDR file. If - is used as the filename, the CDR file is written to stdout." }, { "flag": "", "long": "--reopen", "arg": null, "description": "Forces reopen of the audiodevice after ever song --cpu decoder-type Selects a certain decoder (optimized for specific CPU), for example i586 or MMX. The list of available decoders can vary; depending on the build and what your CPU sup‐ ports. This option is only available when the build actually includes several opti‐ mized decoders." }, { "flag": "", "long": "--test-cpu", "arg": null, "description": "Tests your CPU and prints a list of possible choices for --cpu." }, { "flag": "", "long": "--list-cpu", "arg": null, "description": "Lists all available decoder choices, regardless of support by your CPU." }, { "flag": "-g", "long": "--gain", "arg": null, "description": "[DEPRECATED] Set audio hardware output gain (default: don't change). The unit of the gain value is hardware and output module dependent. (This parameter is only provided for backwards compatibility and may be removed in the future without prior notice. Use the audio player for playing and a mixer app for mixing, UNIX style!)" }, { "flag": "-f", "long": "--scale", "arg": null, "description": "Change scale factor (default: 32768)." }, { "flag": "", "long": "--rva-radio", "arg": null, "description": "Enable RVA (relative volume adjustment) using the values stored for ReplayGain radio mode / mix mode with all tracks roughly equal loudness. The first valid information found in ID3V2 Tags (Comment named RVA or the RVA2 frame) or ReplayGain header in Lame/Info Tag is used." }, { "flag": "", "long": "--rva-audiophile", "arg": null, "description": "Enable RVA (relative volume adjustment) using the values stored for ReplayGain audio‐ phile mode / album mode with usually the effect of adjusting album loudness but keep‐ ing relative loudness inside album. The first valid information found in ID3V2 Tags (Comment named RVAALBUM or the RVA2 frame) or ReplayGain header in Lame/Info Tag is used." }, { "flag": "-1", "long": "--single1", "arg": null, "description": "Decode only channel 0 (left) or channel 1 (right), respectively. These options are available for stereo MPEG streams only." }, { "flag": "-m", "long": "--singlemix", "arg": null, "description": "Mix both channels / decode mono. It takes less CPU time than full stereo decoding." }, { "flag": "", "long": "--stereo", "arg": null, "description": "Force stereo output" }, { "flag": "-r", "long": "--rate", "arg": null, "description": "Set sample rate (default: automatic). You may want to change this if you need a con‐ stant bitrate independent of the mpeg stream rate. mpg123 automagically converts the rate. You should then combine this with --stereo or --mono. --resample method Set resampling method to employ if forcing an output rate. Choices (case-insensitive) are NtoM, dirty, and fine. The fine resampler is the default. It employs libsyn123's low-latency fairly efficient resampler to postprocess the output from libmpg123 in‐ stead of the fast but very crude NtoM decoder (drop sample method) that mpg123 offers since decades. If you are really low on CPU time, choose NtoM, as the resampler usu‐ ally needs more time than the MPEG decoder itself. The mpg123 program is smart enough to combine the 2to1 or 4to1 downsampling modes with the postprocessing for extreme downsampling." }, { "flag": "-4", "long": "--4to1", "arg": null, "description": "Performs a downsampling of ratio 2:1 (22 kHz from 44.1 kHz) or 4:1 (11 kHz) on the output stream, respectively. Saves some CPU cycles, but of course throws away the high frequencies, as the decoder does not bother producing them. --pitch value Set a pitch change (speedup/down, 0 is neutral; 0.05 is 5% speedup). When not enforc‐ ing an output rate, this changes the output sampling rate, so it only works in the range your audio system/hardware supports. When you combine this with a fixed output rate, it modifies a software resampling ratio instead. --8bit Forces 8bit output" }, { "flag": "", "long": "--float", "arg": null, "description": "Forces f32 encoding" }, { "flag": "-e", "long": "--encoding", "arg": null, "description": "Choose output sample encoding. Possible values look like f32 (32-bit floating point), s32 (32-bit signed integer), u32 (32-bit unsigned integer) and the variants with dif‐ ferent numbers of bits (s24, u24, s16, u16, s8, u8) and also special variants like ulaw and alaw 8-bit. See the output of mpg123's longhelp for actually available en‐ codings." }, { "flag": "-d", "long": "--doublespeed", "arg": null, "description": "Only play every n'th frame. This will cause the MPEG stream to be played n times faster, which can be used for special effects. Can also be combined with the --half‐‐ speed option to play 3 out of 4 frames etc. Don't expect great sound quality when us‐ ing this option." }, { "flag": "-h", "long": "--halfspeed", "arg": null, "description": "Play each frame n times. This will cause the MPEG stream to be played at 1/n'th speed (n times slower), which can be used for special effects. Can also be combined with the --doublespeed option to double every third frame or things like that. Don't expect great sound quality when using this option." }, { "flag": "-E", "long": "--equalizer", "arg": null, "description": "Enables equalization, taken from file. The file needs to contain 32 lines of data, additional comment lines may be prefixed with #. Each data line consists of two floating-point entries, separated by whitespace. They specify the multipliers for left and right channel of a certain frequency band, respectively. The first line cor‐ responds to the lowest, the 32nd to the highest frequency band. Note that you can control the equalizer interactively with the generic control interface. Also note that these are the 32 bands of the MPEG codec, not spaced like you would see for a usual graphic equalizer. The upside is that there is zero computational cost in addi‐ tion to decoding. The downside is that you roughly have bass in band 0, (upper) mids in band 1, treble in all others." }, { "flag": "", "long": "--gapless", "arg": null, "description": "Enable code that cuts (junk) samples at beginning and end of tracks, enabling gapless transitions between MPEG files when encoder padding and codec delays would prevent it. This is enabled per default beginning with mpg123 version 1.0.0 ." }, { "flag": "", "long": "--no-gapless", "arg": null, "description": "Disable the gapless code. That gives you MP3 decodings that include encoder delay and padding plus mpg123's decoder delay." }, { "flag": "", "long": "--no-infoframe", "arg": null, "description": "Do not parse the Xing/Lame/VBR/Info frame, decode it instead just like a stupid old MP3 hardware player. This implies disabling of gapless playback as the necessary in‐ formation is in said metadata frame." }, { "flag": "-D", "long": "--delay", "arg": null, "description": "Insert a delay of n seconds before each track." }, { "flag": "-o", "long": "--headphones", "arg": null, "description": "Direct audio output to the headphone connector (some hardware only; AIX, HP, SUN)." }, { "flag": "-o", "long": "--speaker", "arg": null, "description": "Direct audio output to the speaker (some hardware only; AIX, HP, SUN)." }, { "flag": "-o", "long": "--lineout", "arg": null, "description": "Direct audio output to the line-out connector (some hardware only; AIX, HP, SUN)." }, { "flag": "-b", "long": "--buffer", "arg": null, "description": "Use an audio output buffer of size Kbytes. This is useful to bypass short periods of heavy system activity, which would normally cause the audio output to be interrupted. You should specify a buffer size of at least 1024 (i.e. 1 Mb, which equals about 6 seconds of audio data) or more; less than about 300 does not make much sense. The de‐ fault is 0, which turns buffering off. --preload fraction Wait for the buffer to be filled to fraction before starting playback (fraction be‐ tween 0 and 1). You can tune this prebuffering to either get faster sound to your ears or safer uninterrupted web radio. Default is 0.2 (wait for 20 % of buffer to be full, changed from 1 in version 1.23). --devbuffer seconds Set device buffer in seconds; <= 0 means default value. This is the small buffer be‐ tween the application and the audio backend, possibly directly related to hardware buffers." }, { "flag": "", "long": "--smooth", "arg": null, "description": "Keep buffer over track boundaries -- meaning, do not empty the buffer between tracks for possibly some added smoothness." }, { "flag": "-t", "long": "--test", "arg": null, "description": "Test mode. The audio stream is decoded, but no output occurs." }, { "flag": "-c", "long": "--check", "arg": null, "description": "Check for filter range violations (clipping), and report them for each frame if any occur." }, { "flag": "-v", "long": "--verbose", "arg": null, "description": "Increase the verbosity level. For example, displays the frame numbers during decod‐ ing." }, { "flag": "-q", "long": "--quiet", "arg": null, "description": "Quiet. Suppress diagnostic messages." }, { "flag": "-C", "long": "--control", "arg": null, "description": "Enable terminal control keys. This is enabled automatically if a terminal is detected. By default use 's' or the space bar to stop/restart (pause, unpause) playback, 'f' to jump forward to the next song, 'b' to jump back to the beginning of the song, ',' to rewind, '.' to fast forward, and 'q' to quit. Type 'h' for a full list of available controls." }, { "flag": "", "long": "--no-control", "arg": null, "description": "Disable terminal control even if terminal is detected." }, { "flag": "", "long": "--title", "arg": null, "description": "In an xterm, rxvt, screen, iris-ansi (compatible, TERM environment variable is exam‐ ined), change the window's title to the name of song currently playing. --name name Set the name of this instance, possibly used in various places. This sets the client name for JACK output." }, { "flag": "", "long": "--long-tag", "arg": null, "description": "Display ID3 tag info always in long format with one line per item (artist, title, ...) --utf8 Regardless of environment, print metadata in UTF-8 (otherwise, when not using UTF-8 locale, you'll get ASCII stripdown)." }, { "flag": "-R", "long": "--remote", "arg": null, "description": "Activate generic control interface. mpg123 will then read and execute commands from stdin. Basic usage is ``load '' to play some file and the obvious ``pause'', ``command. ``jump '' will jump/seek to a given point (MPEG frame number). Issue ``help'' to get a full list of commands and syntax." }, { "flag": "", "long": "--remote-err", "arg": null, "description": "Print responses for generic control mode to standard error, not standard out. This is automatically triggered when using -s. --fifo path Create a fifo / named pipe on the given path and use that for reading commands instead of standard input." }, { "flag": "", "long": "--aggressive", "arg": null, "description": "Tries to get higher priority" }, { "flag": "-T", "long": "--realtime", "arg": null, "description": "Tries to gain realtime priority. This option usually requires root privileges to have any effect. -?, --help Shows short usage instructions." }, { "flag": "", "long": "--longhelp", "arg": null, "description": "Shows long usage instructions." }, { "flag": "", "long": "--version", "arg": null, "description": "Print the version string." } ], "examples": [], "see_also": [], "section_outline": [ { "name": "NAME", "lines": 2, "subsections": [] }, { "name": "SYNOPSIS", "lines": 2, "subsections": [] }, { "name": "DESCRIPTION", "lines": 4, "subsections": [] }, { "name": "OPERANDS", "lines": 7, "subsections": [] }, { "name": "OPTIONS", "lines": 5, "subsections": [] }, { "name": "INPUT OPTIONS", "lines": 1, "subsections": [ { "name": "-k --skip", "lines": 2, "flag": "-k", "long": "--skip" }, { "name": "-n --frames", "lines": 2, "flag": "-n", "long": "--frames" }, { "name": "--fuzzy", "lines": 5, "long": "--fuzzy" }, { "name": "-y --no-resync", "lines": 7, "flag": "-y", "long": "--no-resync" }, { "name": "-F --no-frankenstein", "lines": 17, "flag": "-F", "long": "--no-frankenstein" }, { "name": "-p --proxy", "lines": 6, "flag": "-p", "long": "--proxy" }, { "name": "-u --auth", "lines": 3, "flag": "-u", "long": "--auth" }, { "name": "--ignore-mime", "lines": 3, "long": "--ignore-mime" }, { "name": "--no-icy-meta", "lines": 12, "long": "--no-icy-meta" }, { "name": "--no-seekbuffer", "lines": 11, "long": "--no-seekbuffer" }, { "name": "-l --listentry", "lines": 4, "flag": "-l", "long": "--listentry" }, { "name": "--continue", "lines": 15, "long": "--continue" }, { "name": "--keep-open", "lines": 5, "long": "--keep-open" }, { "name": "-z --shuffle", "lines": 3, "flag": "-z", "long": "--shuffle" }, { "name": "-Z --random", "lines": 4, "flag": "-Z", "long": "--random" }, { "name": "-i, --index", "lines": 15, "flag": "-i", "long": "--index" }, { "name": "OUTPUT and PROCESSING OPTIONS", "lines": 1 }, { "name": "-o --output", "lines": 3, "flag": "-o", "long": "--output" }, { "name": "--list-modules", "lines": 2, "long": "--list-modules" }, { "name": "--list-devices", "lines": 4, "long": "--list-devices" }, { "name": "-a --audiodevice", "lines": 4, "flag": "-a", "long": "--audiodevice" }, { "name": "-s --stdout", "lines": 5, "flag": "-s", "long": "--stdout" }, { "name": "-O --outfile", "lines": 3, "flag": "-O", "long": "--outfile" }, { "name": "-w --wav", "lines": 18, "flag": "-w", "long": "--wav" }, { "name": "--reopen", "lines": 8, "long": "--reopen" }, { "name": "--test-cpu", "lines": 2, "long": "--test-cpu" }, { "name": "--list-cpu", "lines": 2, "long": "--list-cpu" }, { "name": "-g --gain", "lines": 5, "flag": "-g", "long": "--gain" }, { "name": "-f --scale", "lines": 2, "flag": "-f", "long": "--scale" }, { "name": "--rva-mix, --rva-radio", "lines": 5, "long": "--rva-radio" }, { "name": "--rva-album, --rva-audiophile", "lines": 6, "long": "--rva-audiophile" }, { "name": "-0 --single0 -1 --single1", "lines": 3, "flag": "-1", "long": "--single1" }, { "name": "-m --mono --mix --singlemix", "lines": 2, "flag": "-m", "long": "--singlemix" }, { "name": "--stereo", "lines": 2, "long": "--stereo" }, { "name": "-r --rate", "lines": 14, "flag": "-r", "long": "--rate" }, { "name": "-2 --2to1 -4 --4to1", "lines": 12, "flag": "-4", "long": "--4to1" }, { "name": "--float", "lines": 2, "long": "--float" }, { "name": "-e --encoding", "lines": 6, "flag": "-e", "long": "--encoding" }, { "name": "-d --doublespeed", "lines": 5, "flag": "-d", "long": "--doublespeed" }, { "name": "-h --halfspeed", "lines": 5, "flag": "-h", "long": "--halfspeed" }, { "name": "-E --equalizer", "lines": 11, "flag": "-E", "long": "--equalizer" }, { "name": "--gapless", "lines": 4, "long": "--gapless" }, { "name": "--no-gapless", "lines": 3, "long": "--no-gapless" }, { "name": "--no-infoframe", "lines": 4, "long": "--no-infoframe" }, { "name": "-D --delay", "lines": 2, "flag": "-D", "long": "--delay" }, { "name": "-o --headphones", "lines": 2, "flag": "-o", "long": "--headphones" }, { "name": "-o --speaker", "lines": 2, "flag": "-o", "long": "--speaker" }, { "name": "-o --lineout", "lines": 2, "flag": "-o", "long": "--lineout" }, { "name": "-b --buffer", "lines": 17, "flag": "-b", "long": "--buffer" }, { "name": "--smooth", "lines": 4, "long": "--smooth" } ] }, { "name": "MISC OPTIONS", "lines": 1, "subsections": [ { "name": "-t --test", "lines": 2, "flag": "-t", "long": "--test" }, { "name": "-c --check", "lines": 3, "flag": "-c", "long": "--check" }, { "name": "-v --verbose", "lines": 3, "flag": "-v", "long": "--verbose" }, { "name": "-q --quiet", "lines": 2, "flag": "-q", "long": "--quiet" }, { "name": "-C --control", "lines": 6, "flag": "-C", "long": "--control" }, { "name": "--no-control", "lines": 2, "long": "--no-control" }, { "name": "--title", "lines": 7, "long": "--title" }, { "name": "--long-tag", "lines": 5, "long": "--long-tag" }, { "name": "-R --remote", "lines": 5, "flag": "-R", "long": "--remote" }, { "name": "--remote-err", "lines": 7, "long": "--remote-err" }, { "name": "--aggressive", "lines": 2, "long": "--aggressive" }, { "name": "-T --realtime", "lines": 6, "flag": "-T", "long": "--realtime" }, { "name": "--longhelp", "lines": 2, "long": "--longhelp" }, { "name": "--version", "lines": 2, "long": "--version" } ] }, { "name": "HTTP SUPPORT", "lines": 23, "subsections": [] }, { "name": "INTERRUPT", "lines": 10, "subsections": [] }, { "name": "PLAYBACK STATUS LINE", "lines": 13, "subsections": [ { "name": "0291+0955", "lines": 2 }, { "name": "00:01.68+00:28.22", "lines": 2 }, { "name": "[00:05.30]", "lines": 4 }, { "name": "100=085", "lines": 2 }, { "name": "192 kb/s", "lines": 7 }, { "name": "18 clip", "lines": 3 }, { "name": "p+0.014", "lines": 3 } ] }, { "name": "NOTES", "lines": 14, "subsections": [] }, { "name": "EXIT CODE", "lines": 17, "subsections": [] }, { "name": "BUGS", "lines": 8, "subsections": [] }, { "name": "AUTHORS", "lines": 8, "subsections": [] }, { "name": "LICENSE", "lines": 2, "subsections": [] }, { "name": "WEBSITE", "lines": 6, "subsections": [] } ] } }