Audo test mp4 file

[Charles Johnson]

Nick Ludlam wrote:
> On 15 Mar 2011, at 10:58, Charles Johnson wrote:
>
>   
>> btw, i noticed that it looks like libfaac support is disabled by default in ffmpeg HEAD. Is this true and is it relevant?:
>>
>>     
>>>> --enable-libfaac         enable FAAC support via libfaac [no]<<
>>>>         
>
> No, this isn't an issue for us, as we're simply unwrapping the existing aac encode from inside the flash wrapper, and re-wrapping it as an mp4/m4a file. We don't actually make the aac itself. If you look at the output from "ffmpeg -formats", the important lines will be:
>
>  E mp4             MP4 format
> DE flv             FLV format
>
> This means it can encode the mp4 format, and both decode and encode Flash (we care about decoding only).
>
> Nick
>
>   
Thanks for that Nick.  In my case though, mp4 is not useable, so i need 
to transcode aac to mp3. Given Linux rtmpdump and ffmpeg, can you say 
what my command should be? At the moment, my script is as below, but of 
course this leaves me with aac:

============
mode_du_jour=flashaaclow
get_iplayer --mode=${mode_du_jour} --flvstreamer=/usr/local/bin/rtmpdump 
--get "${@}"
============

CJ