You can do do `file /path/to/file` to see what it really is. file's man
page is pretty useful as well.

On Tue, Aug 21, 2012 at 12:24 AM, Michael Havens <bmike1@gmail.com> wrote:

> well, I figured out that with youtube-dl you need to know the format of
> the video to extract the audio (I suppose that means it actually is for
> ffmpeg). How does one figure out the format of the original file if it
> isn't listed in the file extension?
> :-)~MIKE~(-:
>
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