Editing Mpg123

{{Short description|Open source audio player}}
{{lowercase|title=mpg123}}
{{Infobox software
| name                   = mpg123
| screenshot             = mpg123.png
| author                 = Michael Hipp, Oliver Fromme
| developer              = Thomas Orgis
| released               = before 1999
| latest release version = {{wikidata|property|preferred|reference|edit|Q287021|P348|P548=Q2804309}}
| latest release date    = {{wikidata|qualifier|preferred|single|Q287021|P348|P548=Q2804309|P577}}
| latest preview version = {{wikidata|property|preferred|reference|edit|Q287021|P348|P548=Q51930650}}
| latest preview date    = {{wikidata|qualifier|preferred|single|Q287021|P348|P548=Q51930650|P577}}
| programming language   = [[C (programming language)|C]], [[Assembly language|Assembly]]
| operating system       = [[Unix-like]], [[Windows]]
| genre                  = [[audio player (software)|Audio player]]
| license                = [[GNU Lesser General Public License|LGPL-2.1-only]]
| website                = {{URL|//mpg123.org}}
| repo                   = {{URL|https://sourceforge.net/projects/mpg123/}}
}}

'''mpg123''' is a [[free and open-source]] [[audio player (software)|audio player]]. It supports [[MPEG]] audio formats, including [[MP3]].

As a [[console application]], it has no [[graphical user interface]].

mpg123's [[Assembly language|Assembly]] code is optimized with [[SIMD]] [[Instruction set|instructions]] to improve the performance of the [[iDCT]] part of the MPEG decoding.

mpg123's decoding library, <code>libmpg123</code> is used by [[DeaDBeeF]], [[Audacious (software)|Audacious]], [[XMMS]] and [[Winamp]] (version 5.8)<ref>{{Cite web | url=http://forums.winamp.com/showthread.php?p=3162548 | title=Winamp 5.8 Beta, Build 3660 (Official) - Winamp & Shoutcast Forums | date=19 October 2018 }}</ref> for MP3 playback and can be used in Winamp before version 5.8 via a [[Plug-in (computing)|plugin]].<ref>{{Cite web|url=http://www.hydrogenaud.io/forums/index.php?showtopic=18530|title = Otachan's in_!mpg123}}</ref>

== History ==
The license for the last release (0.59r / 19 June 1999) from the original authors included restrictive (non-commercial, no-derivative) terms, although the source code was available. This led to the creation of mpg321, a similar program (based on [[MPEG_Audio_Decoder|MAD]]) licensed under the [[GPLv2]].<ref>{{Cite web|url=http://mpg321.sourceforge.net/about.html|title = About mpg321}}</ref> 

Official development of mpg123 and its library <code>mpglib</code> stalled, and serious security holes emerged.<ref>{{Cite web|url=http://mpg123.org/download.shtml|title = Mpg123: Download}}</ref><ref>{{Cite web|url=http://www.cvedetails.com/vulnerability-list/vendor_id-1781/Mpg123.html|title = Mpg123 : Security vulnerabilities}}</ref> Patches were applied downstream for packages provided by various [[Linux]] and [[BSD]] operating systems.

In 2006, a new maintainer started work towards the release of a new official mpg123 package. After several security rollup releases in the 0.6.x series, version 1.0 was released in 2007 under the LGPLv2.1, with <code>libmpg123</code> as a replacement for <code>mpglib</code>.

== See also ==
{{Portal|Free and open-source software}}
*[[Comparison of audio player software]]
*ogg123 (A similar program that plays [[Vorbis|Ogg Vorbis]] files. Released with the vorbis-tools reference software.)
*[[MPEG Audio Decoder|madplay]]

==References==
{{Reflist}}

==External links==
*{{Official website|//mpg123.org}}

{{Media player (application software)|free}}

[[Category:Free audio software]]
[[Category:Audio player software for Linux]]
[[Category:Free media players]]
[[Category:Linux media players]]
[[Category:Free software primarily written in assembly language]]
[[Category:Free software programmed in C]]
[[Category:C (programming language) libraries]]