[FFmpeg-user] convert video to mp3

[（忍）不轻云]

i am sorry ;


I want develop one c program which can  convert the audio from video to mp3 file;


I need more help than  the 'ffmpeg/doc/examples/*.c'.


I searched ' convert video to mp3' ,nothing found.


can you supply some c program demo ,usefull website or good idea


thank you Moritz, thank you every body. 






------------------ Original ------------------
From:  "Moritz Barsnick";<barsnick at gmx.net>;
Date:  Wed, Dec 11, 2013 09:32 PM
To:  "FFMpeg user discussions"<ffmpeg-user at ffmpeg.org>; 

Subject:  Re: [FFmpeg-user] convert video to mp3



Hi,

On Wed, Dec 11, 2013 at 14:58:43 +0800, ???????????? wrote:
> hello,
> how can i convert video 2 mp3 file? 

I consider this impossible. If you are referring to what we usually
understand under "mp3", this is an audio format. You cannot "convert"
video to audio.

If you are looking for a filter which can create a sound which
"represents" the visuals in your video, I believe ffmpeg has no such
filter:
> ffmpeg -filters | grep -F 'V->A'

I think the other way is possible:
> ffmpeg -filters | grep -F 'A->V'
 ... avectorscope     A->V       Convert input audio to vectorscope video output.
 ... showspectrum     A->V       Convert input audio to a spectrum video output.
 ... showwaves        A->V       Convert input audio to a video output.

Moritz
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user at ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
.