does an MP3 Bitrate Changer exist?

mr_accountant

Hi

Is there any free software out there that converts mp3 files into the same bitrate, so when copying onto cd the sound quality is exactly the same?

TIA

nemo183

The short answer is no. Once a music track has been converted into an MP3, it is compressed to the degree that is requested, and is impossible to convert back as there is no record kept of the data that was "lost" in the compression process.

It is possible, of course, to convert any mp3 file back to cd format - cda - but with a loss in quality.

Poppycat

The loss in quality would also depend on the bitrate of the mp3, the higher the number the less in the loss in quality. There are other formats like flac that are lossless format that should reproduce the quality the day it was converted, however that's not mp3, mp3 is a format that compresses the music and take bits out that is generally unnoticeable to the human ear.

mr_accountant

thanks all

i have some 128kbps which i want to covert to either 192 or 256 , and then burn to cdr so that they are similarish, but i guess its not possible

Poppycat

Its possible to convert but you wont achieve anything by it as it some of the data in the orginal will be lost.

If you want to do your own mp3 I recommend using lame as the encoder usually works with another program like CDDA-Extractor. The higher the bitrate the better the sound generally. 192kbps-320kbps is the better bitrates. Techo fobs tend to use Flac these days though or AAC is becoming popular

orainsear

There are a few programs around that can change the bitrate of an mp3 file

e.g. CDMaster32, 4Musics MP3 Bitrate Changer, Alt MP3 Bitrate Converter etc - just do a web search.

Just be aware that to sync all your music will require changing all the bitrates to that of the track which has the lowest bitrate - you can only reduce bitrate, not increase it.

Also another useful tool is MP3Gain which normalises the volume of mp3 tracks.

Avoriaz

Why would you want to do that?

Unless you go back to the original source, you cannot increase the quality of an mp3 file, you can only lower it.

Do you really want to degrade the sound quality of all your files to the level of the lowest one?:D


Edit, written and posted before seeing the post above which says much the same thing about bit rates.