Home of m3w
a mp3 streamer for the www

Description

m3w is a streamer to stream live audio data to the world-wide-web. It uses LAME to convert data to mp3 format and can login to an icecast server to realize an internet radio station. m3w runs under windows95 or later. m3w is free software.

General News

M3w got a companion program: wimp3, an mp3 player based on a newly developed mp3 decoder mp32pcm. The later piece of software is described in great detail in my new book Understanding MP3 - Syntax, Semantics, Mathematics, and Algorithms with its own homepage.

Download

The latest version of m3w can be downloaded from the download page.

M3W Online Manual

Thanks to Adam Hyde, there is a great online manual available for m3w under http://www.flossmanuals.net/M3W .

News for Version 2.3

m3w now supports a UDP streaming mode and can handle input with 48kHz sample frequency.

News for Version 2.2

This is mostly a bug-fix version. In addition, the handling of output files was slightly improved. You can now just press the record button, and m3w will do what you expect it to do.

News for Version 2.1

WARNING: The file setup.exe containing version 2.1 that was posted here between Monday, May 8, 2006, 17:30 GMT and Thursday, May 11, 2006, 15:25 GMT contained a serious memory leak. The version that is posted here now does not contain this bug.

The buffer management has been rewritten. A autoname feature was added, to generate automatic filenames from date and time. A bug in the options code was fixed, which caused trouble in the japanese version. The output file is now written in shared read mode so that you can read and play the output file while it is still written.

News for Version 2.0 JA

A Japanese version of m3w was provided by Kotaro Thanks a lot. Unfortunately, I do not know any Japanese and I am unable to fully appreciate the translation. It can be found on the download page.

News for Version 2.0 FR

A Translation of m3w to French was provided by Pierre-Emmanuel Muller. Merci!
Here are the differences:

Texts in m3w are translated into French.
An "Uninstall" link was added in the M3W program folder in the startup menu.
HTTP is now the default authentification process as it is the one used by Icecast2.
If you wonder about Pierre-Emmanuel Muller, who did the translation, you find hints in the licence file and in the "About" box.

The French version can be found on the download page.

News for Version 2.0

Many small improvements.
Options to configure the startup of m3w, like automatic sending.
3 types of login: xaudio, http and icy make it compatible with the new icecast 2.
Automatic gain controll
Automatic reconnect to the server after connection problems.
Rewritten broadcast code.

Features

input directly from soundcard.
input from files.
can write ID3 version 1.1 tags.
high quality, fast realtime mp3 encoding with LAME.
output to file.
output to icecast servers using x-audio login.
runs under win95 or later.
small size (less than 90k for the exe file).
extensive online help.
very simple to install and set up.
flexible configuration.

Screen Shot

Links

LAME

icecast

mp3-tech (technical information)

User Manual in Japanese (looks cool, but I can't read it)

HOWTO use m3w with the Darwin Streaming Server

On Adam Hyde's Streaming Suitcase Page there is a nice How-To Use m3w Document.

History of Previous Versions

News for Version 1.7

The RECORD button was a bit dangerous: You press it and your outputfile is truncated to zero (removing all these precious bits from your harddisk), unless of course the append box was checked. Now, the appened box is checked by default and you will get a warning message with the option to press OK, if you really want to ..., or CANCEL otherwise.
Your can store the setting of your append box in the configuration file.
Storing your average-, variable-, constant-bitrate configuration, did not work with 1.6. Now there is a new option: --bitmode (short -M), that will do it. The options cbr, abr and pre do no longer exist (sorry).

News for Version 1.6

The list of command line and configuration file options was completed. Now you can set any internal parameter using a command line switch or a configuration file.
The help file was updated.
Installing m3w, will create a file association: The program m3w will be associated with files having the extension m3w, assuming these are configuration files. If such a file is opend using the context menu or just by double clicking on it, m3w ist started, the configuration file is passed to it as a command line argument, causing m3w to load this configuration. That is: You can start m3w in your favorite configuration just by doubleclicking on the configuration file.
Not really new: You can drop a configuration file on m3w using Drag and Drop, and this will cause m3w to read the configuration file.

News for Version 1.5

The Peak level meter for the sound input got a new clipping indicator.
The help file was not found the first time help was invoked. Now WinHelp gets a little hint where to look for.
The Help file got updated. (not too many people seem to read it, but believe me, its quite good).

News for Version 1.4

Major Bug fixed in Buffer allocation code for output buffers.
Default size of output buffers increased to 20s due to tests with several providers of dial-up connections.

News for Version 1.3

Some bugs fixed concerning the encoder parameters in Average Bitrate Mode and with Presets.

News for Version 1.2

can write ID3 version 1.1 tags.
more robust defaults (minimum and maximum bitrate).
comes with Lame version 3.91 encoding library

Maintained by Martin Ruckert

Address	Prof. Dr. Martin Ruckert Fachhochschule München Fachbereich 07 Informatik/Mathematik Postfach 20 01 13 80323 München
Email	ruckert@cs.hm.edu

Home of m3wa mp3 streamer for the www