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  • License: Freeware
  • Last update: 4 years ago
  • Total downloads: 447
  • Price: Free |
  • Operating system: WinXP, WinNT 4.x, WinNT 3.x, WinME, Win2003, Win2000, Win Vista, Win98
  • Publisher: The LAME Project (2 other programs)
See full specifications

windows default iconLAME DirectShow Filter Publisher's description

LAME is an educational tool to be used for learning about MP3 encoding.

Following the great history of GNU naming, LAME originally stood for LAME Ain't an Mp3 Encoder. LAME started life as a GPL'd patch against the dist10 ISO demonstration source, and thus was incapable of producing an mp3 stream or even being compiled by itself. But in May 2000, the last remnants of the ISO source code were replaced, and now LAME is the source code for a fully LGPL'd MP3 encoder, with speed and quality to rival and often surpass all commercial competitors.

LAME is an educational tool to be used for 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. 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.

Using the LAME encoding engine (or other mp3 encoding technology) in your software may require a patent license in some countries.

LAME features:

* Many improvements in quality in speed over ISO reference software. See history.
* 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.

What's New in This Release:

Added support for the DirectShow IAMStreamConfig Interface to the LAME encoder filter output pin.
Modified the DirectShow filter registration section so that the LAME Encoder filter is correctly registered in the Audio Compressors filter category. This will allow third-party encoding applications using the DirectShow System Device Enumerator Interface to correctly detect the LAME encoder when querying the Audio Compressors filter group.
Modified the filter registration information so that the MP3 audio subtype is correctly reported as being supported on the encoder output pin. This will allow third-party encoding applications using the DirectShow IFilterMapper2 Interface to recognize that the LAME encoder supports MP3 output.
Altered the Filter Merit Value that was being used when the filter was registered so that it is now using the standard DirectShow compressor filter merit value of MERIT_DO_NOT_USE (0x200000). Previously, the filter was being registered using a value of MERIT_SW_COMPRESSOR (0x100000), which was at a lower priority (i.e. worse priority) than MERIT_DO_NOT_USE. This prevented the LAME Encoder filter from being selected for use by some third-party encoding applications.
Added code to calculate the frame length of the audio frames used for the nBlockSize element of the WAVEFORMATEX output structure. Previously this value was simply hard-coded to 1.

System Requirements:

No special requirements.
Program Release Status: Major Update
Program Install Support: Install and Uninstall

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