[LAU] Retrieving audio info from a video file

[Robin Gareus]

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Jonathan Gazeley wrote:
> On 02/09/2010 10:38 AM, Emiliano Grilli wrote:
>> Jonathan Gazeley<jonathan.gazeley at bristol.ac.uk>  writes:
>>
>>    
>>> Hi all,
>>>
>>> This is slightly OT for the group, but I hope someone can tell me.
>>>
>>> I have thousands of large AVI files and I want a quick way to determine
>>> from the command line whether their audio is stereo, 5.1, etc.
>>>
>>> I've read about ffmpeg and haven't seen anything jumping out at me, and
>>> it's hard to pick the right search keywords to find relevant pages on
>>> Google.
>>>
>>> Anyone know a trick to get this info? Currently I can do it by
>>> right-clicking on the file and viewing its properties, but there *has*
>>> to be a better way...
>>>      
>> maybe "mplayer -frame 0 -identify myfile.avi" ?
>>
>>
>>    
>>> Cheers,
>>> Jonathan
>>>      
>> HTH
>> Ciao
>>
>>    
> 
> Thanks for your advice. Unfortunately this seems to require a graphical 
> machine, but I'm trying to run this on a headless fileserver that has 
> all my media.
> 
> [jonathan at zeus ~]$ mplayer -frame 0 -identify movie.avi
> Creating config file: /home/jonathan/.mplayer/config
> Unknown option on the command line: -frame
> Error parsing option on the command line: -frame
> MPlayer SVN-r29701-4.4.1 (C) 2000-2009 MPlayer Team
> 
> Any other ideas?

There's 'xjinfo' which comes with http://xjadeo.sf.net/

It's a small commandline-tool to extract information from any media file
which ffmpeg can read. For some example output see:
http://rg42.org/oss/xjadeo/xjinfo

HTH,
robin
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