LAME MP3 Encoder
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Download from Developer Website
Version: 3.99 Alpha 4/3.98.4(32 bit)
Size: 648 KB
OS: Windows(All)XP/Vista/7
License: GPL / FREE
Developer: The LAME Project
LAME MP3 Encoder is a high quality MPEG Audio Layer III (MP3) encoder licensed under the LGPL.It is developed as an educational tool to be used in learning about MP3 encoding.
The goal of the LAME project is to use the open source model to improve the psycho acoustics, noise shaping and speed of MP3.
Today, LAME is considered the best MP3 encoder at mid-high bitrates and at VBR1, mostly thanks to the dedicated work of its developers and the open source licensing model that allowed the project to tap into engineering resources from all around the world.
Both quality and speed improvements are still happening, probably making LAME the only MP3 encoder still being actively developed.
LAME is not for everyone – it is distributed as source code only and requires the ability to use a C compiler. However, many popular ripping and encoding programs include the LAME encoding engine.
Key Features of “LAME MP3 Encoder”:
- Encodes in CBR (constant bitrate) and in two types of variable bitrate, VBR and ABR3, as well as freeformat.
- Supports MPEG1, MPEG2 and MPEG2.52 layer III encoding.- Many improvements in quality in speed over ISO reference software.
- MPEG1,2 and 2.5 layer III encoding.
- CBR (constant bitrate) and two types of variable bitrate, VBR and ABR.
- Encoding engine can be compiled as a shared library (Linux/UNIX), DLL , Directshow filter or ACM codec (Windows).
- Free format encoding and decoding.
- GPSYCHO: a GPL’d psycho acoustic and noise shaping model.
- Powerful and easy to use presets.
- Quality better than all other encoders at most bitrates.
- Fast! Encodes faster than real time on a PII 266 at highest quality mode.
- MP3x: a GTK/X-Window MP3 frame analyzer for both .mp3 and unencoded audio files.
- Supports mono and stereo signals. Stereo signals are encoded by default with an advanced algorithm4 to maximize the quality.
- Tuned default parameters for optimum encoding.
- Fast. Encodes to -V 2 at 17 times realtime on a P4 2.8Ghz.
- Uses an advanced psycho acoustic and noise shaping model improved during years.
- Developed under the LGPL GNU license
- MPEG1 sample rates are 32Khz, 44.1Khz and 48Khz.
- MPEG2 sample rates are 16Khz, 22.05Khz and 24Khz.
- MPEG 2.5 does not exist as a standard. It is an extension from fraunhofer that added the possibility to encode in 8Khz, 11,025Khz and 12Khz.
- The stereo encoding of LAME automatically switches between Mid-Side and simple-stereo to maximize the available bits while preserving the quality. More info in Mid/Side Stereo
New in This Release:
- Improve Debian packaging.
- Include suggestions made by Fabian Greffrat
- Update version of the Debian package to reflect that it is taken from CVS.
- Get rid of a transitional package
- Much more to come…
- Minor fix to validate the history file correctly
- Porting of LAME mp3rtp program to Windows platform
- Fix: for free format mp3 above 320 kbps, the maximum allowed bits was limited too far.
- New switch –swap-channel added, see tracker item [ 1118412 ] RFE: option to swap L and R channels
- Changed behaviour: LAME replaces common suffixes by MP3/WAV when no output filename was given. For example, a simple lame x.wav will create output file x.mp3
- Fix for Bugtracker item [ 2962223 ] Encoder delay and padding values ignored when re-encoding
- Added support for WAVE FORMAT IEEE FLOAT input files
