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Re: AAC Constant Bit Rate coding


You could try ffmpeg: www.ffmpeg.org

Open source and handles pretty much anything you throw at it.

This line should convert a wav to aac.

ffmpeg -i file.wav -ab 128k -acodec libfaac test.mp4

It seems to ignore the audio bit-rate flag though (-ab 128k) - perhaps for reasons mentioned previously

This is what I get inside test.mp4: Audio: aac, 44100 Hz, stereo, s16, 141 kb/s



2011/11/15 Warren Bakay <warren@xxxxxxxx>
I use xld to encode to aac. It uses core audio to do the encoding.

On Tue, Nov 15, 2011 at 1:07 PM, fabien gouyon <fgouyon@xxxxxxxxxxxxx> wrote:
Dear list,

Could somebody recommend a free software, or even better some
open-source code, for converting audio from WAV to AAC with *constant*
bit rate (and not variable bit rate).

Any help would be much appreciated.

Fabien Gouyon, PhD
Senior Research Scientist, INESC Porto
Invited Assistant Professor, Engineering Faculty, University of Porto