$ mplayer -vo null -ao pcm  20080418\ -\ eDistribution\ -\ 30\ seconds\ introduction.avi 
MPlayer 1.0rc2-4.2.3 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Core(TM)2 CPU         T5600  @ 1.83GHz (Family: 6, Model: 15, Stepping: 6)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing 20080418 - eDistribution - 30 seconds introduction.avi.
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
VIDEO:  [MJPG]  640x480  24bpp  30.000 fps  5460.5 kbps (666.6 kbyte/s)
Clip info:
 Digitization Time: Fri Apr 18 12:26:53 2008

 Software: CanonMVI06
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG decoder)
==========================================================================
==========================================================================
Forced audio codec: mad
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 11024 Hz, 1 ch, u8, 88.2 kbit/100.00% (ratio: 11024->11024)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO PCM] File: audiodump.wav (WAVE)
PCM: Samplerate: 11024Hz Channels: Mono Format u8
[AO PCM] Info: Faster dumping is achieved with -vc null -vo null -ao pcm:fast
[AO PCM] Info: To write WAVE files use -ao pcm:waveheader (default).
AO: [pcm] 11024Hz 1ch u8 (1 bytes per sample)
Starting playback...
VDec: vo config request - 640 x 480 (preferred colorspace: Planar 422P)
VDec: using Planar 422P as output csp (no 1)
Movie-Aspect is undefined - no prescaling applied.
VO: [null] 640x480 => 640x480 Planar 422P 
A:   5.9 V:   0.0 A-V:  5.945 ct:  0.000   1/  1 ??% ??% ??,?% 1 0 
Badly interleaved AVI file detected - switching to -ni mode...
A:   7.0 V:   6.2 A-V:  0.767 ct:  0.627 188/188 12%  0%  0.3% 1 0 

Exiting... (End of file)