This is a sample raw AC3 file that demonstrates the liba52 SSE/3Dnow
optimization bugs.  Just play the .ac3 file with mplayer and hear the cracks.
I have tried by disabling SSE and 3DNow extensions in the code and the cracks
disappear indeed.  What follows is a -v log of mplayer playing that file.

Ignacy Gawedzki <ibugs@qult.net>

MPlayer 1.0rc2-4.1.3 (C) 2000-2007 MPlayer Team
CPU: AMD Athlon(tm) 64 Processor 3200+ (Family: 15, Model: 31, Stepping: 0)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
get_path('codecs.conf') -> '/opt/users/ig/.mplayer/codecs.conf'
Reading /opt/users/ig/.mplayer/codecs.conf: 115 audio & 237 video codecs
Configuration: --prefix=/usr --confdir=/etc/mplayer --mandir=/usr/share/man --win32codecsdir=/usr/lib/win32 --enable-runtime-cpudetection --enable-largefiles --disable-libdvdcss-internal --enable-smb --enable-ftp --enable-cdparanoia --enable-radio --enable-lirc --enable-joystick --enable-xf86keysym --disable-tremor-internal --enable-liba52 --enable-musepack --enable-speex --enable-libvorbis --enable-mad --enable-mp3lib --enable-theora --enable-libdv --enable-libmpeg2 --enable-tv-v4l2 --enable-alsa --enable-ossaudio --enable-esd --enable-arts --enable-pulse --enable-nas --enable-xinerama --enable-menu --enable-xv --enable-vm --enable-gl --enable-xmga --enable-mga --enable-3dfx --enable-tdfxfb --enable-sdl --enable-aa --enable-caca --enable-dxr3 --enable-xvmc --with-xvmclib=XvMCW --enable-ggi --enable-fbdev --enable-freetype --enable-gif --enable-png --enable-jpeg --enable-liblzo --enable-fribidi --enable-ladspa --enable-gui --enable-mencoder
CommandLine: '-quiet' '-v' 'liba52-cracks-sample.ac3'
init_freetype
font: can't open file: Verdana
Cannot load bitmap font: Verdana
Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
get_path('fonts') -> '/opt/users/ig/.mplayer/fonts'
Using nanosleep() timing
get_path('input.conf') -> '/opt/users/ig/.mplayer/input.conf'
Parsing input config file /opt/users/ig/.mplayer/input.conf
Input config file /opt/users/ig/.mplayer/input.conf parsed: 0 binds
Setting up LIRC support...
get_path('liba52-cracks-sample.ac3.conf') -> '/opt/users/ig/.mplayer/liba52-cracks-sample.ac3.conf'

Playing liba52-cracks-sample.ac3.
get_path('sub/') -> '/opt/users/ig/.mplayer/sub/'
[file] File size is 262144 bytes
STREAM: [file] liba52-cracks-sample.ac3
STREAM: Description: File
STREAM: Author: Albeu
STREAM: Comment: based on the code from ??? (probably Arpi)
LAVF_check: raw ac3
Checking for YUV4MPEG2
ASF_check: not ASF guid!
Checking for NuppelVideo
Checking for REAL
Checking for SMJPEG
Searching demuxer type for filename liba52-cracks-sample.ac3 ext: .ac3
Trying demuxer 35 based on filename extension
LAVF_check: raw ac3
libavformat file format detected.
==> Found audio stream: 0
[lavf] Audio stream found, -aid 0
======= WAVE Format =======
Format Tag: 8192 (0x2000)
Channels: 2
Samplerate: 48000
avg byte/sec: 32000
Block align: 1
bits/sample: 0
cbSize: 0
==========================================================================
LAVF: 1 audio and 0 video streams found
LAVF: build 3345920
==========================================================================
Forced audio codec: mad
Opening audio decoder: [liba52] AC3 decoding with liba52
dec_audio: Allocating 3840 bytes for input buffer.
dec_audio: Allocating 6144 + 65536 = 71680 bytes for output buffer.
Using SSE optimized IMDCT transform
AC3: 2.0 (stereo)  48000 Hz  256.0 kbit/s
A52 flags before a52_frame: 0x2A
A52 flags after a52_frame: 0x2
Using MMX optimized resampler
AUDIO: 48000 Hz, 2 ch, s16le, 256.0 kbit/16.67% (ratio: 32000->192000)
Selected audio codec: [a52] afm: liba52 (AC3-liba52)
==========================================================================
Building audio filter chain for 48000Hz/2ch/s16le -> 0Hz/0ch/??...
[libaf] Adding filter dummy 
[dummy] Was reinitialized: 48000Hz/2ch/s16le
[dummy] Was reinitialized: 48000Hz/2ch/s16le
alsa-init: requested format: 48000 Hz, 2 channels, 9
alsa-init: using ALSA 1.0.14a
alsa-init: setup for 1/2 channel(s)
alsa-init: using device default
alsa-init: pcm opened in blocking mode
alsa-init: chunksize set to 1024
alsa-init: fragcount=16
alsa-init: got buffersize=65536
alsa-init: got period size 1024
alsa: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little Endian
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
AO: Description: ALSA-0.9.x-1.x audio output
AO: Author: Alex Beregszaszi, Zsolt Barat <joy@streamminister.de>
AO: Comment: under developement
Building audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
[dummy] Was reinitialized: 48000Hz/2ch/s16le
[dummy] Was reinitialized: 48000Hz/2ch/s16le
Video: no video
Freeing 0 unused video chunks.
Starting playback...
ds_fill_buffer: EOF reached (stream: audio)  
ds_fill_buffer: EOF reached (stream: audio)  
ds_fill_buffer: EOF reached (stream: audio)  
EOF code: 1  

Uninit audio filters...
[libaf] Removing filter dummy 
Uninit audio: liba52
alsa-uninit: pcm closed
vo: x11 uninit called but X11 not inited..

Exiting... (End of file)