Re: [LAU] Retrieving audio info from a video file

Il giorno Tue, 09 Feb 2010 11:12:30 +0000
Jonathan Gazeley <jonathan.gazeley@bristol.ac.uk> ha scritto:

> On 02/09/2010 10:38 AM, Emiliano Grilli wrote:
> > Jonathan Gazeley<jonathan.gazeley@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@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?
>
the right command line is:
mplayer -frames 0 -identify -ao null -vo null movie.avi

> Many thanks,
> Jonathan

-- 
Luigi
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