Posted by reply on 11/16/72 11:39

On 9 Feb 2006 12:10:18 -0800, googly-al@ashbourne-town.com wrote:

|Hi
|Can anyone help.
|
|I want to re-encode some MPEG2 mp3 files to MPEG1, so that I can play
|them on my Sony mp3 player (does not support MPEG2).
|
|What are the switches I need to set in Lame to be able to do this. I've
|looked at the Lame documentation, but it does not seem to specify this.
|
|Regards Alan F.

I'm presuming you are talking about command line Lame, since you used the term
switches (or Razor Lame where you can do the same thing with switches).

You first need to be aware of which settings give you MPEG1. For that type
lame --longhelp
(note the -- is two dashes, but on my screen it looks like one long one).
Since the specifications are at the end you don't need to scroll or use |more.

What you will get (at least in 3.92) is

MPEG-1 layer III sample frequencies (kHz): 32 48 44.1
bitrates (kbps): 32 40 48 56 64 80 96 112 128 160 192 224 256 320

MPEG-2 layer III sample frequencies (kHz): 16 24 22.05
bitrates (kbps): 8 16 24 32 40 48 56 64 80 96 112 128 144 160

MPEG-2.5 layer III sample frequencies (kHz): 8 12 11.025
bitrates (kbps): 8 16 24 32 40 48 56 64 80 96 112 128 144 160

which lets you know which sample frequencies and bit rates make up the
different version. Then, you will find if you need to resample. Won't buy
you any quality to increase the bit rate, and any modification of mp3 files
will always lose some quality.

If you have a number of files to do, get Razor Lame
http://www.dors.de/razorlame/index.php, so you can save the settings you want,
and then do a whole bunch at once. It is just a front end to the command
Lame.

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