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Bug#244608: marked as done (distorted decoding of mp3s since mpeglib 3.2.2-1)



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From: James Young <debian-bugs@marm.org.uk>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: distorted decoding of mp3s since mpeglib 3.2.2-1
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Package: mpeglib
Version: 4:3.2.2-1
Severity: important
Tags: sid

Since upgrading to mpeglib 3.2.2-1, decoding of mp3s using mpeglib sounds
dreadful, full of strange MPEG artifacts.  Version 3.2.1-1 works perfectly,
as do players built around other MP3 decoders (e.g. XMMS, mpg123, mpg321).  Given
that there appears to be no code change in the upstream release from
3.2.1-1, is this possibly a compiler/optimization bug, maybe only on i386?

To reproduce, simply use:

yaf-splay foo.mp3

High-frequency sounds such as hi-hats appear to trigger the artifacts more
than other sounds.

This also happens when playing the mp3 using arts/libarts1-mpeglib, so I
don't think it's a problem with yaf-splay's output routines - it doesn't
sound like it either.

Ogg Vorbis files play perfectly using yaf-vorbis or through arts. 

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.4-ck1
Locale: LANG=C, LC_CTYPE=C

Versions of packages mpeglib depends on:
ii  kdelibs4                    4:3.2.2-1    KDE core libraries
ii  libc6                       2.3.2.ds1-11 GNU C Library: Shared libraries an
ii  libcdparanoia0              3a9.8-11     Shared libraries for cdparanoia (r
ii  libgcc1                     1:3.3.3-6    GCC support library
ii  libogg0                     1.1.0-1      Ogg Bitstream Library
ii  libstdc++5                  1:3.3.3-6    The GNU Standard C++ Library v3
ii  libvorbis0a                 1.0.1-1      The Vorbis General Audio Compressi
ii  libvorbisfile3              1.0.1-1      The Vorbis General Audio Compressi
ii  libx11-6                    4.3.0-7      X Window System protocol client li
ii  libxext6                    4.3.0-7      X Window System miscellaneous exte
ii  libxv1                      4.3.0-7      X Window System video extension li
ii  xlibs                       4.3.0-7      X Window System client libraries m

-- no debconf information

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Date: Sat, 7 Aug 2004 06:43:37 +0200
From: Adeodato =?iso-8859-1?Q?Sim=F3?= <asp16@alu.ua.es>
To: 244608-done@bugs.debian.org
Cc: James Young <debian-bugs@marm.org.uk>,
	James Clark <ma2412ma@hotmail.com>,
	Gunter Ohrner <debian_bts@CustomCDROM.de>,
	Hape Schaal <hp.news@gmx.de>,
	Per Peterson <peterson0509@mail2.carteret.edu>,
	"Nathaniel W. Turner" <nate@houseofnate.net>
Subject: the mpeglib distorted playing is fixed in 3.2.3-1
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hi all,

  the bug in mpeglib which caused distortion in some mp3 is fixed in the
  latest mpeglib available in sid (3.2.3-1), which will be included in
  sarge soon.

  thanks you all for your patience and your follow-ups to the different
  bugs. if you still have a song which sounds distorted, please report
  back.

  thanks Chris Cheney for the upload and maintaining many KDE packages.

  thanks Nathaniel W. Turner too, who took care of BTS cleanup wrt this
  issue and provided a patched mpeglib in his private repository while
  it was not fixed in debian itself.

  happy playing,

-- 
Adeodato Simó
    EM: asp16 [ykwim] alu.ua.es | PK: DA6AE621
 
Wedding rings are the world's smallest handcuffs



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