[mdlug] Ffmpeg Problem

[Mark Thuemmel]

On 06/17/2014 09:51 PM, Frank Peters wrote:
> Hello,
> 
> I downloaded a video from which I need to extract the audio portion.
> (The video is actually an audio track with some accompanying images
> so this operation is more like stripping the video from the audio.)
> 
> Mplayer is able to play the video (and audio) without problem and it
> identifies the video stream as h264 and the audio stream as aac.
> Therefore, I thought, it should be a simple matter to extract the
> audio portion using ffmpeg:
> 
> ffmpeg -i input.mp4 -vn -acodec copy output.aac
> 
> However, the extracted audio file, which should be a bona fide AAC
> audio file, fails to play with mplayer.  (See below for full error
> output.)  
> 

I always seemed to have issues with ffmpeg not having all the formats
compiled in.  What do you get when you run this command?

ffmpeg -formats

Then you will start looking at compiling your own version I suppose......

I'm thinking you will need to tell us what distro you are using and how
you got ffmpeg.  Bonus points if you can temporarily put up a url where
we can download the target and see what works.....