[FFmpeg-user] convert video to mp3

[Reindl Harald]

Am 11.12.2013 14:32, schrieb Moritz Barsnick:
> On Wed, Dec 11, 2013 at 14:58:43 +0800, ???????????? wrote:
>> hello,
>> how can i convert video 2 mp3 file? 
> 
> I consider this impossible

why?

> If you are referring to what we usually understand under "mp3"
> this is an audio format

so what

> You cannot "convert" video to audio

says who?

the video has a seperate audio- and video-stream
if hwat you are saying would be true options line -an
for skip the audio stream of a video would be impossible

ffmpeg -i yourvideo -f mp3 -acodec libmp3lame youraudio.mp3

even the other direction works but while technically nothing
is easier than take the audio-stream and convert it to whatever
while ignore the video you need a image-loop for the length
of your target video - been there, done that, implementation
in a php-cli-wrapper took around 1 hour

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