[mdlug] Ffmpeg Problem

[Frank Peters]

On Tue, 17 Jun 2014 22:47:45 -0400
Tony Bemus <tony at bemushosting.com> wrote:

> 
>  I ran into a similar problem.   I ended up using VLC  to save the audio track.
>

Thanks for your input.

Unfortunately I ran into problems when attempting to install VLC on my
Gentoo system.  It seems that my already installed and customized
ffmpeg is not compatible with VLC.

Rather than trying to fix this mess I searched for another solution
and I found it at this link:

http://www.hydrogenaud.io/forums/index.php?showtopic=92283&pid=780686&st=0&

Ffmpeg was producing an AAC file without a proper header.  To remedy
this I used the command:

ffmpeg -i output.aac -acodec copy -absf aac_adtstoasc output.mp4

I'm not exactly sure what this does (I'll need to study this later)
but the new file "output.mp4" is now playable in mplayer.

I believe that it wraps the headerless AAC data in an MP4 container.

Thanks again for the responses.

F Peters