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Answer 1

A:

Typical flv:

flv @ 0x152ba80]Estimating duration from bitrate, this may be inaccurate [lavf] stream 0: video (flv), -vid 0 [lavf] stream 1: audio (mp3), -aid 0 VIDEO: [FLV1] 320x240 0bpp 25.000 fps 250.3 kbps (30.6 kbyte/s)

To read this, ffmpeg must be compiled with additional options:

  --enable-gpl --enable-nonfree --enable-libmp3lame

Then,

ffmpeg -i flvfile 1.mp3

mhambra 2010-10-06 21:16:50

If I try to extract the audio from a FLV created using any other tool but FMS, it works without changing my FFFMPEG options. The problem is with the FLVs created from live streams and FMS.

fast-dev 2010-10-06 22:01:36

I guess, I need to add support for the SPEEX coded???? how?

fast-dev 2010-10-06 22:02:06

--enable-libspeex

mhambra 2010-10-06 22:09:09

thanks, but how can I recompile FFMPEG if I just installed it using apt-get?

fast-dev 2010-10-06 22:10:07

if I do: sudo apt-get install libspeex, it installs libspeex1. how can a re-compile FFMPEG to use it?

fast-dev 2010-10-06 22:11:24

Answer 2

A:

Try this site: flv2mp3.com

Update: Sorry, I didn't read the command line part of your question.

Joel 2010-10-06 21:17:05

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How can I extract audio from FLV?

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