[LAU] Retrieving audio info from a video file

[Robin Gareus]

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Robin Gareus wrote:
> 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
> 

...and there's also "ffprobe" that comes with recent versions of ffmpeg.

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