Fast(er) transcoding from aac to mp3.

[Ian Stirling]

On 03/18/2011 12:52 PM, bat guano wrote:
> -acodec libmp3lame -ab 128k test1.mp3

Hmm.

For some reason ffmpeg is not pulling in mp3lame codec when I compile.
A test I did of
time (ffmpeg -i You_and_Yours_-_16_03_2011_b00zf33w_default.aac   -ab 
128k test.wav; lame test.wav test.mp3)

finished in 4:35 - this is on a core duo at 1.8GHz.
So, 12* or so real-time.
If doing 2 encodings at once, 24*.
With vbr (lame -v) - then it goes faster, 3:24 - about 18*.

Seems a fair bit faster. Recent (this week) versions of lame and
ffmpeg, gcc 4.4.4.