[FFmpeg-user] backtrack parameters from existing file

[Lou]

On Tue, 8 Jan 2013 16:07:03 -0600 (CST)
"Scott Goldman" <scottg at emailhosting.com> wrote:

> ffmpeg version 0.8.4-4:0.8.4-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the
> Libav developers
>   built on Nov  6 2012 16:51:33 with gcc 4.6.3
> *** THIS PROGRAM IS DEPRECATED ***
> This program is only provided for compatibility and will be removed in a
> future release. Please use avconv instead.

You're not using ffmpeg from FFmpeg, but a fake version from a fork
that we can not support here. For a description of what you're actually
using:

http://stackoverflow.com/a/9477756/1109017