LAME MP3 Encoder uses the Command Line interface, but this should not scare you off. The ABR method is a combination of the previous two, which preserves the bitrate at the required target and produces smaller files than the CBR method. The VBR method is recommended for the average user because it renders the smallest file size while keeping quality it changes bitrates depending on the complexity of the file. Regarding compression, LAME MP3 Encoder is superior to other similar utilities because it uses CBR, VBR and ABR.ĬBR allows you to maintain a constant bitrate through the file and predict the size of the resulting file. The MP3 encoder does not support the following formats defined by the standard.It allows you to rip audio CDs and your music will occupy less storage space without compromising sound quality. The MP3 encoder also supports the following formats. The MP3 encoder supports the standard with some exceptions, as well as some additional formats, as described below. The MPEG-1 and MPEG-2 standard defines 252 layer 3 audio formats. It does not support 32-bit floating point input. The encoder supports only 16-bit integer PCM input. Set the following attributes on the input media type. This attribute contains the 12 bytes of the MPEGLAYER3WAVEFORMAT structure that follow the wfx member of that structure.Īlternatively, you can fill in an MPEGLAYER3WAVEFORMAT structure and call MFInitMediaTypeFromWaveFormatEx to convert the structure to a Media Foundation media type. Use this attribute to specify the encoded bit rate. The default bit rates are 128 Kbps for mono and 320 Kbps for stereo. Attributeīit rate of the encoded MP3 stream, in bytes per second. Set the following attributes on the output media type. The output type must be set before the input type. The MP3 encoder supports the following media types. The class identifier (CLSID) of the MP3 encoder is CLSID_MP3ACMCodecWrapper, defined in the header file wmcodecdsp.h. The Microsoft Media Foundation MP3 audio encoder is a Media Foundation Transform (MFT) that encodes MPEG-1 layer 3 (MP3) audio.
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