Comments on: Converting mp3 to flv with ffmpeg

By: Jessia Etchinson

Jessia Etchinson — Wed, 18 May 2011 11:42:36 +0000

Great info thanks! What language is close to php as far as functionality and ease of use?

By: Paul

Paul — Wed, 22 Sep 2010 21:56:23 +0000

Help, I use this

FFMPEG$ ffmpeg -y -i audio_ardilla.mp3 -f flv -acodec libmp3lame -ab 192 -ac 1 salida.flv

, it not work

Input #0, mp3, from ‘audio_ardilla.mp3′:
Duration: 00:03:42.03, start: 0.000000, bitrate: 192 kb/s
Stream #0.0: Audio: mp3, 48000 Hz, stereo, s16, 192 kb/s
WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
Output #0, flv, to ‘salida.flv’:
Stream #0.0: Audio: libmp3lame, 48000 Hz, mono, s16, 0 kb/s
Stream mapping:
Stream #0.0 -> #0.0
[libmp3lame @ 0x9f0a520]flv does not support that sample rate, choose from (44100, 22050, 11025).
Could not write header for output file #0 (incorrect codec parameters ?)

By: Rowena Handzlik

Rowena Handzlik — Thu, 05 Aug 2010 23:50:47 +0000

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By: Rupali

Rupali — Thu, 04 Mar 2010 05:21:09 +0000

I used the command as suggested by TAO and it worked gr8.
But i am getting a warning as mentioned below. Can someone pls suggest how i can overcome this warning.
Can someone pls explain what if i change bitrate 64 to some higher bit rate, what effect it will have on the output file. i mean will the sound quality be affected? Please suggest.

WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s

By: Root

Root — Tue, 16 Feb 2010 15:12:42 +0000

When executing an ffmpeg command via php, it is important to add the following ” 2>&1″ at the end of the script.
e.g exec(FFMPEG_LIBRARY.’ffmpeg -i notify.wav newtest.mp3 2>&1 ′)

By: jaymin

jaymin — Thu, 24 Dec 2009 04:48:06 +0000

–ffmpeg is installed fine on my server
–when i used below php script, output is …

define(‘FFMPEG_LIBRARY’, ‘ /usr/local/bin/’);

$exec_string = FFMPEG_LIBRARY.’ffmpeg -y -i beep.mp3 -f flv -acodec libmp3 -ab 64 -ac 1 testfl.flv’;

exec($exec_string) or die (“ffmpeg did not work”);

output is:
ffmpeg did not work

also i have used

exec(FFMPEG_LIBRARY.’ffmpeg -i notify.wav newtest.mp3′);

but same result

can anyone help me in his?

thanks

By: tao

tao — Tue, 13 Oct 2009 23:56:45 +0000

use what you have: you were close…

ffmpeg -y -i live.mp3 -f flv -acodec libmp3lame -ab 64 -ac 1 live.flv

By: George

George — Fri, 25 Sep 2009 12:53:10 +0000

Using Ubuntu 8.04 and got the “Unknown codec ‘libmp3′” error message.

Just change it too mp3 and it should work.

By: Kamran_Pakistan

Kamran_Pakistan — Thu, 17 Sep 2009 06:48:31 +0000

This lib is required for conversion to the mp3 format,just reinstall ffmpeg with this lib included and it should be ok.

By: Amigo

Amigo — Fri, 03 Apr 2009 10:21:38 +0000

Hello Mate

I tried to execute following ffmpeg,

ffmpeg -y -i /var/www/punehtml/streamspec/web/uploads/temp/ss_1238712868.mp3 -f flv -acodec libmp3 -ab 64 -ac 1 /var/www/punehtml/streamspec/web/uploads/temp/ss_mp3.flv

And getting

Duration: 00:04:27.2, start: 0.000000, bitrate: 127 kb/s
Stream #0.0: Audio: mp3, 44100 Hz, stereo, 128 kb/s
Unknown codec ‘libmp3′

Can you tell me what is this ‘libmp3′ ??

Quite Urgent!!!

Thanks