Tor Olav Kristensen wrote:
> Gail wrote:
>> Does anyone know of a tool that can identify the audio and video 
>> codecs used in an avi file?
>> I've got a bunch of videos that play fine on my laptop, but have no 
>> sound when played on my desktop. I'm guessing I'm missing an audio 
>> codec, but I'm not sure how to find out which one.

...
> tok@storeblaa ~ $ file mediaexample.avi
...

Also try:

tok@tok-laptop:~$ mplayer -identify mediaexample.avi
MPlayer 1.0rc2-4.2.3 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Core(TM)2 Duo CPU     T7250  @ 2.00GHz (Family: 6, Model: 
15, Stepping: 13)
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 mediaexample.avi.
AVI file format detected.
ID_VIDEO_ID=0
[aviheader] Video stream found, -vid 0
ID_AUDIO_ID=1
[aviheader] Audio stream found, -aid 1
VIDEO:  [cvid]  320x240  24bpp  30.000 fps  2124.8 kbps (259.4 kbyte/s)
Clip info:
  Artist: Microsoft
ID_CLIP_INFO_NAME0=Artist
ID_CLIP_INFO_VALUE0=Microsoft
  Subject: support.microsoft.com
ID_CLIP_INFO_NAME1=Subject
ID_CLIP_INFO_VALUE1=support.microsoft.com
  Copyright: 2005 Microsoft
ID_CLIP_INFO_NAME2=Copyright
ID_CLIP_INFO_VALUE2=2005 Microsoft
ID_CLIP_INFO_N=3
ID_FILENAME=mediaexample.avi
ID_DEMUXER=avi
ID_VIDEO_FORMAT=cvid
ID_VIDEO_BITRATE=2124760
ID_VIDEO_WIDTH=320
ID_VIDEO_HEIGHT=240
ID_VIDEO_FPS=30.000
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=1
ID_AUDIO_BITRATE=1536000
ID_AUDIO_RATE=0
ID_AUDIO_NCH=0
ID_LENGTH=6.33
xscreensaver_disable: Could not find XScreenSaver window.
GNOME screensaver disabled
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffcvid] vfm: ffmpeg (Cinepak Video (native codec))
==========================================================================
ID_VIDEO_CODEC=ffcvid
==========================================================================
Forced audio codec: mad
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio: 192000->192000)
ID_AUDIO_BITRATE=1536000
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
AO: [pulse] 48000Hz 2ch s16le (2 bytes per sample)
ID_AUDIO_CODEC=pcm
Starting playback...
VDec: vo config request - 320 x 240 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 320x240 => 320x240 Planar YV12
A:   6.3 V:   6.3 A-V:  0.000 ct:  0.000 190/190  1%  0%  0.2% 0 0
GNOME screensaver enabled

Exiting... (End of file)

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